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for the community, by the community.

Roel is a Full Stack Developer. His framework of choice is Ruby on Rails, but has dabbled in various other languages and frameworks. When he is not building and scaling back end systems, you'll find him enjoying competitive gaming and playing basketball.

Chris Belanger is the Editor-in-Chief of raywenderlich.com. If there are words to wrangle or a paragraph to ponder, he‘s on the case. In the programming world, Chris has over 25 years of experience with multiple database platforms, real-time industrial control systems, and enterprise healthcare information systems. When he kicks back, you can usually find Chris with guitar in hand, looking for the nearest beach, or exploring the lakes and rivers in his part of the world in a canoe.

Catie makes things for, with, and about Apple tech in collaboration with her husband, Jessy! She is inspired by everyone at raywenderlich.com to be a positive force in the world. When away from her desk, Catie lifts heavy things, runs around outside throwing Westside Discs, pines for excellent gaming experiences, and tells her cat, Princess Ozma, how fluffy she is.

Brian is an instructor at Razeware who develops courses and screencasts on a wide variety of topics of iOS development. When not teaching, Brian plays board games, studies aikido, and tries to keep up with his wife and two kiddos.

Christine is Razeware's administrative assistant and video editor. For many years she fostered a strong dislike of green screens which grew to a slightly unhealthy obsession. Fortunately, she found her calling in video editing and spends her days now making those detestable green screens disappear! She also helps RW team members and readers alike by answering customer support inquiries and performing administrative duties. When not at the computer she enjoys bonfires and stand-up comedy.

Joe’s path to software development began in the fields of computational physics and systems engineering. He has been a mobile software developer on iOS and Android since 2009. He now lives in Boston and is Android Pillar Lead for raywenderlich.com.

Fascinated by technology consistently making learning easier, Jessy enjoys exploring new techniques involving creative software and hardware combinations, and imparting the experience to others. Along with his wife Catie, you'll find him doing so around here in the form of video tutorials. 😺📹

Manda has been involved in publishing for over ten years through various creative, educational, medical and technical print and digital publications. In her free time, you can find her at the climbing gym, backpacking in the backcountry, hanging with her dog, working on poems, playing guitar and exploring breweries.

Web Developer & Designer at Razeware - Currently feeling Illustrator, Vue JS and tools for a smooth workflow. The names Luke, Luke Freeman....

Ray is part of a great team - the raywenderlich.com team, a group of over 200 developers and editors from across the world. He and the rest of the team are passionate both about making apps and teaching others the techniques to make them. When Ray’s not programming, he’s probably playing video games, role playing games, or board games.

Vicki is Ray’s wife and business partner. She is a digital artist who creates illustrations, game art, and a lot of other art or design work for the tutorials and books on raywenderlich.com. She also runs gameartguppy.com, which is a website where she creates free and and inexpensive art assets for game developers to use in their games. When she’s not making art, she loves hiking, a good glass of wine, and attempting to create the perfect cheese plate.

Sam is the CTO of Razeware, the company behind the popular training site raywenderlich.com. He spends his time building the site, creating tutorial videos and doing battle with the internet.

When he’s not working, you’ll find him backstage in a theatre, or entertaining crowds of people with his trombone. You should say hi to him on Twitter: @iwantmyrealname, seek him out as sammyd on GitHub, or check his personal site iwantmyreal.name.

Katie is a video editor, podcast producer and Razeware's customer support lead. When not sat behind a screen she enjoys spending time with her husband and three little boys, and eating good food.

Andrea Lepley is an author, editor, artist and twin. As raywenderlich.com's Video Team Lead, she dreams in Trello and makes Gantt charts for fun. She wishes she had spare time, so she could spend it eating cheese and writing stories about cats.

Tiffani is the Marketing Associate at raywenderlich.com. With a passion for helping others reach new skills and potentials, she is delighted to be using her marketing expertise to connect people with the highest-quality programming tutorials on the Internet that can help anyone and everyone excel in career-changing and opportunity-creating ways. In her free time, she tries to travel and be outside as much as possible and is forever playing catch up with podcast episodes.

Mobile Developer passionate about creating amazing apps with great user interfaces. Founder of aldominium.com, company dedicated to create awesome video tutorials for college students.

Software engineer with a passion for developing Android apps. Love to share what I learn with the rest of the developer community at codingdemos.com

Artem is an Android developer with a degree in Aerospace engineering employed by Yalantis, an app development company. Artem has been interested in programming since he wrote his first program on a scientific calculator :P He drinks lots of coffee and reads sci-fi novels.

Amanjeet is an android developer based out of New Delhi, India. Developing applications from his first year of under graduation. He always try to develop applications with high performances and very interactive user experiences. He always try to find the most optimized solution for any problem. When not developing, he loves to travel and watching movies and TV shows. You can also follow him on Github and LinkedIn.

I'm an Android Developer, lover of technology, challenges, and science. When I am not having quality time with family and friends. I am having fun coding, attending conferences, contributing to open source projects, learning new stuff and sharing what I have learned.

Arun is a Senior Android Engineer at Fueled. He is on an endless quest to learn the art of Clean Code. Find him on Medium and Github.

Ahmed is an Android developer and an open source contributor with libraries like RichPath and Instacapture, always he wants to push the limits of the Android platform’s capabilities. You can find Ahmed on Twitter and LinkedIn.

Alex is an Android and iOS developer at (Thoughtbot)[https://thoughtbot.com/] in Boston, MA. He's a big fan of reactive programming and learning about new ways to create silky smooth Android and iOS applications. In his spare time he enjoys reading, playing video games and rewatching Star Trek: The Next Generation for the billionth time.

Android (kotlin) developer in a complicate hate and love relationship with the green robot. I need to automate nearly everything, so I write code for 2 days to avoid a 1 minute task. ArchLinux and Android user, I'm the strange guy with the "phone with physical keys in 2017" [blackberry] Reverse engineering just for fun, with no particular skills but a lot of ideas

Darryl Bayliss is a Software Engineer from Liverpool. Away from programming he is usually reading, writing on his blog or playing some fantastical video game involving magic and dragons. Feel free to say hello on Twitter or check out his coding scribbles on GitHub.

Eric is a Mobile Developer at John Deere who develop apps for the Android and iOS platforms. In his free time he likes to dabble in IOT projects and AWS cloudy goodness.

Fuad provides mobile strategy, architecture & development for the Health & Fitness markets. He is the author of The Kotlin Book: an introduction to Android development for iOS Developers, and author and technical editor on other Kotlin / Android books and articles from RayWenderlich.com. If you’ve ever been to an airport, you’ve likely seen his work - the flight arrival and departure screens are a Flash 7 interface he wrote towards the beginning of the millennium. Over the years he’s taught at many colleges, covering a huge variety of subjects from Anatomy & Physiology to Mobile Design & Development. He has also been the official photographer for a number of tech conferences.

When he’s not knee deep in Swift or Kotlin, Fuad enjoys martial arts and racing with Team Velocipede.

Fuad has often applied principals he learned from his study of the martial arts to mentoring others as well as taking a unique approach to problem-solving. He has found that quite often, the barriers we set before us are more mental than anything else, and the key to overcoming them lies in understanding this concept.

Professional developer with extensive knowledge of Android, Kotlin, and Java. Developing since 2015, I’ve amassed a great deal of experience and finished projects using only best practices, building high-quality products. Huge Kotlin lover and preacher, mostly focusing on Kotlin Coroutines and other low-level concurrency mechanisms. Gaming when not coding, writing about coding or speaking about coding at various events, meetups, and conferences. Dungeon master in spare time.

Fer is a software engineer, passionate about mobile development. He is an Android and iOS developer. When Fer's not coding he likes to play football, video games, watch movies (he's a Star Wars fan!) and read sci-fi novels. He lives in Buenos Aires, Argentina.

I am a software engineer at DreamOval working primarily on Android mobile development. I am learning more on front end development and I also have interests in renewable energy and IoT.

Ivan is a Software Engineer from Zagreb, Croatia with more than 8 years of experience in Android development. The projects he worked on include larger security sensitive mobile banking applications, various smaller applications and even a few simple 2D games

Joey landed his first programming job in the ’90s with a HyperCard (remember that?) resume and by going out for beer with the managers of the company where he wanted to work until they caved and hired him. Since then, he’s worked at a San Francisco startup during the dot-com bubble, done tech evangelism for Tucows, Microsoft, and Shopify, valiantly tried to make Windows Phone happen, and once had a very short stint as an accordion-playing go-go dancer at a Toronto nightclub. He’s currently the Lead Product Manager at Sourcetoad. Joey lives, works, and engages in nincompoopery in Tampa, Florida, where he runs Tampa iOS Meetup (and helps out at the Android and Xamarin Meetups, too!), plays unlikely rock and pop tunes on his accordion, and generally does what he can to avoid becoming a “Florida Man” news story.

I really enjoy developing Android and iOS applications and in my spare time create apps that I freely share. I have been programming on the Android platform for over 8 years and iOS for a year. I have a course on Kotlin on raywenderlich.com and have done talks at conferences.

Lance has been a computer nut ever since his dad bought him a computer when he was a kid. After doing Java development for a diverse range of companies he decided to end his addiction to heavy inheritance, static typing, and coding without tests. After a few years of programming Ruby he eventually fell in love with native Android development (along with a smattering of native IOS). These days, he practices clean living with lots of well-tested code, class composition, and fun languages as the founder and lead software engineer of Polyglot Programming. He has extensive experience in native Android and IOT and is a committer on several open source projects. In addition, he is a regular speaker at conferences around the world, is a co-organizer of the Atlanta Sensors and Startups and post organizer of Rubyfuza and Ruby D-Camp ZA. He is also known to practice interspecies pair (“purr”) programming with his orange tabby, Allie.

James is an Android and iOS developer based in Brighton. He is a big fan of the offline-first approach for building apps and currently works at Couchbase. Always learning and aiming to write useful tutorials and workshops for the community. Feel free to reach out on Twitter or Github.

lisa is currently an android engineer at intermedia labs where she works on hq trivia. previously she was an ios and android engineer at kickstarter.com she enjoys art, the outdoors, music, and the indoors.

Joe’s path to software development began in the fields of computational physics and systems engineering. He has been a mobile software developer on iOS and Android since 2009. He now lives in Boston and is Android Pillar Lead for raywenderlich.com.

I've been working with Java since 1995 when I a co-founded the first Italian magazine about this technology (http://www.mokabyte.it). After many years creating Java desktop and enterprise application, I started to work in the mobile world. In 2001 I wrote his first book about J2ME. After many J2ME and Blackberry applications, I then started to work with Android in 2008. The same year I wrote the first Italian book about Android; best seller on Amazon.it. That was the first of a series of 6 books. I worked at Yahoo and Facebook and I'm actually Engineering Tech Lead at Lloyds. I'm a musical theatre lover and a supporter of the soccer team S.P.A.L.

Passionate Android Developer working on changing millions of lives through code. Enjoying the global marker of software development and trying to make a small dent in the Universe by teaching people how to code.

Namrata Bandekar is a Software Engineer focusing on native Android and iOS development. When she's not developing apps, she enjoys spending her time travelling the world with her husband, SCUBA diving and hiking with her dog. Say hi to Namrata on Twitter, LinkedIn or follow her on GitHub.

I am an Android developer with a masters degree in Information Technology, major in information and software engineering. I have several years of experience in making Android apps. I was a top student during my studies, awarded with Summa Cum Laude and Magna Cum Laude honorary mentions while in my free time I competed and won several national and international hackathons.

Nishant is a Senior Android Engineer at Soundbrenner and open source enthusiast who spends his time doodling when not hacking on Android. He is a caffeine-dependent life-form and can be found either talking about android libraries or advocating that coffee is the elixir of life at community gatherings. Find him on Github, Medium and Twitter.

Pierre is an Android engineer from Paris currently building cool apps with OCTO Technology. He enjoys staying up-to-date on the latest tech trends and will be writing about Kotlin and Android. During his free time, he also like to dig electronic music records and play video games.

Pablo is an enthusiastic Android developer who has mainly developed his career as a freelance. He is currently working as Android Tech Lead at Plexus Tech, and has been in love with Kotlin since a few years ago. He is rather obsessed with code organization and coherence, and that's why he is usually reading about architecture schemes and design patterns. Since a few years ago, he transmits his passion to students as a lecturer. Running and his cat Tuno are his other main interests.

Rod Biresch started his professional career in hardware as an Integrate Circuit (IC) layout designer. He found more creative opportunities in developing software and has been coding since the 1990s. Rod lives in the Philadelphia area and is a consultant for Chariot Solutions. He also serves as an Advisory Board member for the Western Design Center. Away from his day job, Rod is an avid golfer, loves to travel and likes to tinker with 65xx technology.

I'm a mobile app technology enthusiast. Currently I am helping Realtor.com© to maintain and improve their Android and iOS apps. I have also been running a company called Puri Technologies Ltd. which provides software development and consulting services. I my spare time, I am either working on a side project, enjoying nature or playing badminton. I love using technology to create something useful for the society. For that I deem it is necessary for the people with diverse backgrounds to come together. If you have a great idea that would have a positive effect on society, I'm just an email away.

Sam is the CTO of Razeware, the company behind the popular training site raywenderlich.com. He spends his time building the site, creating tutorial videos and doing battle with the internet.

When he’s not working, you’ll find him backstage in a theatre, or entertaining crowds of people with his trombone. You should say hi to him on Twitter: @iwantmyrealname, seek him out as sammyd on GitHub, or check his personal site iwantmyreal.name.

Sreekumar hails from Singapore and works as a solutions architect at Zoliotech. Together with his team of iOS and Android developers, he develops mobile apps for businesses in Singapore and the region. Developing games on Unity is among his favorite areas of work, as is training and grooming young developers.

Steve Smith has an addiction to always getting the latest shiny objects. These include mobile phones, wearables, streaming devices, and home automation hardware, just to mention a few. What better way to continually get to play with all these devices than to build a career around them. Prior to his gadget addiction, Steve worked as a server side architect focusing on integration. With the introduction of the first iOS SDK in 2008, Steve shifted his focus towards mobile development. Since then he has worked on mainly native app development, while occasionally branching out using mobile web, hybrid and cross platform frameworks. Steve lives in the Philadelphia area and works as the Mobile Practice Lead for Chariot Solutions.

Tom has been addicted to coding since he was a young teenager, writing his first programs on Atari home computers. He currently runs his own software development company focused on native iOS and Android app development. He enjoys playing tennis, guitar, and drums, and spending time with his wife and two children.

Victoria is an Android Engineer at Buffer. The conferences she has spoken at have been an enjoyable way to connect with the technical community and exchange information with others. She was drawn to programming because of its potential to help people in a meaningful way. In her spare time, Victoria enjoys dancing and curling up with a good book.

Vijay is a husband, father and senior mobile engineer. Based out of Canada's capital, Vijay has worked on dozens of apps for both Android and iOS. When not in front of his laptop, you can find him in front of a TV, behind a book, or next to his kids. You can reach out to him on Twitter @v_sharm or LinkedIn @vijaysharm

Andy is a long time Android developer who loves keeping up with the latest and greatest. Is is especially interested in Kotlin Multiplatform, RxJava and clean architecture.

Fabio is an Italian developer. He has been spending many hours of his life in front of a monitor since he was eight years old (when his parents gave him his first Commodore 64!). During his career, he has worked with a plethora of frameworks, systems, and languages. C/C++, C#, Java, Kotlin, Objective-C, PHP, JavaScript, SQL, Oracle (PL/SQL), MS SQL Server (Transact/SQL). In the last few years, he's focusing only on mobile applications (Android and iOS), and he fell in love with Flutter. He also has experience in the IT field, so even servers, networking, and systems tuning/configuration is no stranger to him. When he doesn't write code, he likes to have fun with his family or ride his motorbike.

Ben Wicks is an Android developer at Client Resources, Inc. in Omaha and a co-organizer of Omaha's Google Developer Group. Ben was first introduced to Android development in his senior computer science class in High School. Since graduating from the University of Nebraska at Omaha in 2014, Ben has contributed to three enterprise Android applications. Ben is passionate about testable architecture and helping new mobile developers find that spark to constantly learn and grow.

Alain is the Lead Android Engineer at AriadNEXT, France.

He has fallen in love with Android since its Eclair version. As a senior developer, he wants to share his experience with the great Android community that has supported him from the beginning. He's co-organizing the GDG Rennes Android meet-up.

Concerned with code robustness and application security, he is a keen supporter of the Clean Code and TDD principles.

In his spare times, he likes playing the guitar, running and photography.

Pablo was born somewhere between the mountains of Aragon and the Mediterranean waters of the Costa Brava. He moved to the United Kingdom just before voting and drinking age. Studied IB and CS in a place south of London, called Guildford. Once "dictated education" was over, he worked through a few start-ups doing Android development; first in Madrid, then back in Guildford and finally landing in London. Eventually, he started his new life as a "code merc". Programmer and writer for hire, laying his helping hand wherever required.

Jemma is an Android developer from Brighton, UK, who enjoys attending meetups and conferences to meet other developers and learn new things. Aside from mobile development, Jemma enjoys chocolate, musical theatre and any excuse to wear her walking boots!

I am an Android Developer at smallcase. I am passionate about creating good mobile experiences and sharing my learnings with others. When I am not playing around with Android or AOSP, you can find me binge-watching TV shows or sketching anime characters.

Android Developer ∙ Mountainhopper (hiker, mountainbiker, motorbiker) ∙ GDG Innsbruck + Munich co-organizer

Zac is a Senior Mobile Engineer at GoDaddy working on their suite of Android and iOS apps. He is passionate about Android and, specifically, developing apps written in Kotlin. When he's not writing code, Zac enjoys hiking nearby trails, fishing, playing board games with his family, and planet-watching through his telescope.

Lawrence is a passionate mobile developer from Singapore 🇸🇬. He has over 3 years of mobile development experience and has worked with clients from all over the world. He's a tech addict and is also an iOS and Flutter enthusiast. When he's not writing code, he enjoys time with his pet Maltese call Luke and spending time with his loved ones.

Programmer || Gamer || Coffee && Music Addict I am a veteran developer in love with mobile technologies. Developing apps for Android, iOS, Wearables and... you name it! From BANGLADESH and working in Singapore in a leading HealthTech company. More on me at Github, Linkedin and Medium

I am a fullstack developer specialized in the development of mobile phone apps ( iOS, Android) powered by Grails / Micronaut backends. Since 2015, I write a newsletter, Groovy Calamari, around the Groovy Ecosystem and Microservices. Groovy, Grails, Micronaut, Gradle,...

Aaqib is an enthusiastic programmer with the love of Swift and anything that looks like Swift i.e Kotlin. He loves writing code in Swift and Kotlin, and exploring new technologies and platforms. He likes to listen to old music. When he is not writing code, he’s probably spending his time watching movies, tv-shows or anime, or either doing some research for writing the next article. He has his own personal website kodesnippets.com.

Kolin Stürt is a team lead with a focus on encryption, reverse engineering, forensics and application hardening. He has been hacking and developing apps since 2009.

Pablo is the founder and CTO of a Technology Development company in Madrid. They focus on web and mobile app development. He started as an Art Director, although now he is currently an expert in iOS and Android programming. Also, he´s the Main Professor of the iOS and Android Mobile Development Masters Degree at a well-known technology school in Madrid (CICE). Finally, he is also specializing in Python and Artificial Intelligence.

Eric is Android Tutorial Team Lead and a Professional Software Engineer and certified Agile-Scrum Master focusing on Apple iOS & Android Apps, NodeJS and APIs. Currently, a Lead Engineer at San Diego based MJD Interactive, he is based in Orlando Florida but works with clients all across the US including many major brands. During his 30+ year career, Eric has worked with REST APIs, web and mobile applications, server back-end systems, automated infrastructure deployments and more. Follow Eric on LinkedIn, Twitter @ericwastaken or on his website ericsoto.net.

iOS and Android developer that enjoy being challenged and working on projects that require me to work outside my comfort and knowledge set, as continuing to learn new languages and development techniques are important to me. Working nowadays in a bank from Brazil (@SICOOB_oficial) in the iOS team. I love drink craft beer when I have a free time :]

Ryan lives in Orange, California and is the Engineering Team Lead at GrandPad. Ryan's an Android enthusiast and enjoys building software that helps people in meaningful ways. He also likes to lead, mentor, and lecture about topics he's particularly interested in. Outside of coding, Ryan's into coffee, good food, fitness, and spending time with his family.

Software engineer from Minnesota, currently focused on Android app development. Other technology experience includes web, desktop, and database development.

I am a freelance Android and iOS developer as well as a full-time computer science professor for Aims Community College in Colorado where I teach a certificate in mobile app development including Android and iOS platforms. I also teach courses in Python, Java, C++ and a certificate for development in the .NET platform utilizing C#. Prior to teaching, I was a full-time software engineer creating .NET applications in C# for a financial industry. I am also a writer and an organizer for the Google Developer Group of Northern Colorado. I enjoy attending the Google I/O conference as well as various Android meetups and conferences around the United States. In my spare time, I enjoy rollerblading, horseback riding and spending time with my teenage daughter and two dogs.

Jenn is an avid Android developer with a passion for clean and intuitive design. Her heart is with mobile development, but she also enjoys exploring IoT, machine learning and creative ways to display data. She likes to collect and fix up old manual typewriters. Her todo and grocery lists always look very old timey.

I've been working in software for over a decade, on everything from highly scalable back-end systems to enterprise web, to mobile apps across iOS and Android. Since the first year of the App Store I've been hooked on creating awesome apps with friendly UX and have helped do so for everything from startups all the way up to fortune 500 companies. Hit me on Twitter for interesting musings or find me on http://nickbona.com

I'm an Industrial Engineer that started his career designing hardware and software for Air Traffic Control solutions but at the very same time was developing Android apps as a hobby when first devices running Android 1.5 hit the market. Later on I joined Samsung's R&D team as a senior Android Developer and travelled the world helping to develop new Android based solutions and experiences. In 2015 I co-founded -GreenLionSoft- where we mainly develop Android apps that help to consume public open data related to smart cities, transit, pollution, tides, electricity prices, etc...

Hod started programming on his Dad's HP calculator, and hasn't stopped since. He has worked professionally in mobile since the early days of Android, and does web on the side. Before joining Couchbase in 2016, he led the developer ecosystem group at Samsung, where he learned how you really pronounce "Gangnam" (almost).

Experienced Android Developer from Croatia with a demonstrated history of working in the computer software industry. Currently employed at Five, which is officially a Google Developers Certified Agency. Worked on a variety of apps, from small apps for local startups to big popular apps with a 5+ million of users. Very passionate about Android, technology in general and always trying to learn something new and improve myself as a developer. Love my job and enjoy every second doing it. In my free time I like to exercise, either at the gym or at home, read a good book, watch a good movie, or simply spend time with my friends and family.

Kotlin enthusiast. Android dev @ AutSoft. Computer engineering MSc student @ BME. Developer of MaterialDrawerKt. Very active on StackOverflow under the Kotlin tag. Found on Twitter, Stack Overflow, and Twitter.

Yun is a software engineer for the Runkeeper app at ASICS Digital in Boston, Massachusetts. If she's not running marathons or facilitating for the Girls Who Code club in Cambridge, MA, you can probably find her setting off the kitchen fire alarm with her cooking.

Kyle Jablonski is a Senior Android Engineer at Ticketmaster working on B2B Apps and SDKs. He has been working with Android since late 2010. When he is not writing code, he spends his time with his wife, snowboarding, reading books, attending events and writing articles for his own blog at www.kdotj.com.

Anitra started her career during the dot-com bubble as a front-end web developer and designer. Usability and accessibility were her speciality before those things were cool. (Yes, they're cool.) She was a contributing author of the HTML5 Cookbook book. She was a technical editor of the Universal Design for Web Applications book. She presented at the SXSW Interactive conference in Austin, TX three times and also speaks at local events. Anitra is active in the technology, agile, and user experience communities in sunny Tampa, Florida. She's currently an Agile Coach and Scrum Master for the Digital and Innovation team at Gerdau, a steel producer that's undergoing a technological and cultural transformation. When she finds the time, she also enjoys traveling and playing board games.

I'm a computer engineer who loves programming. I'm currently working as a mobile developer (iOS, Android & Xamarin Classic) at Indra. I like to try new things in my free time. My current research lines are machine learning, data analytics and raspberry pi. In my leisure time, I like to hang out with friends, travel around the world, go cycling and read about stock-market.

Bhavna is a freelance Android developer and educator from India. She has been developing Android apps since 2013. She likes to learn latest in the world of mobile development and share the same with the developer community. When she is not at work, you can find her in the kitchen listening to music and experimenting new dishes.

Eunice is a software engineer at DreamOval, currently focusing on Mobile development.

Software Engineer @ Practo. I love learning and exploring the mobile development frontier.

JB is a mobile expert currently based in Berlin. JB has been with OLX Group for more than three years, two years of which are from the Philippines and the rest from Berlin. Before that he worked for several years in a company that serviced clients such as NFL, HSN and other large media companies. He likes exploring new technologies related to mobile, especially those that can improve developer productivity. JB enjoys experiencing different cultures via food, language, and travel.

Wendy is a full-time project manager that specializes in projects that merge creative and technical. Her unusual background involves a cooking show, freelance writing, and thousands of miles walked as a political activist. Occasionally she steps away from her command center to help her husband with home improvement projects or play on the seashore.

Manda has been involved in publishing for over ten years through various creative, educational, medical and technical print and digital publications. In her free time, you can find her at the climbing gym, backpacking in the backcountry, hanging with her dog, working on poems, playing guitar and exploring breweries.

Chris Belanger is the Editor-in-Chief of raywenderlich.com. If there are words to wrangle or a paragraph to ponder, he‘s on the case. In the programming world, Chris has over 25 years of experience with multiple database platforms, real-time industrial control systems, and enterprise healthcare information systems. When he kicks back, you can usually find Chris with guitar in hand, looking for the nearest beach, or exploring the lakes and rivers in his part of the world in a canoe.

Sandra Grauschopf is an experienced writer, editor, and content manager. She's also an avid explorer who can't go anywhere without a book in her hand.

April is a former high school English and theatre teacher and director. When not volunteering at her daughters' schools, she usually spends her time being asked to pretend to be a unicorn, zombie princess or super hero. In her spare time, she enjoys reading, making pasta and exploring the Gulf Coast with her family.

Tyler works as on the Editing team at RayWenderlich.com and is currently pursuing a Master's degree in Education from Northwestern University. He comes from a background in History academia having received a Bachelor's degree in History and a Master's degree in Latin American Studies. In his spare time, he enjoys reading on the latest world political events, playing board games, and, when weather permits, walking along the lakeshore of Chicago.

Tammy Coron is an independent creative professional and the host of Roundabout: Creative Chaos. She’s also a Development Editor at The Pragmatic Bookshelf, a Sr. Editor at Razeware, and a content contributor at Creative Bloq, Lynda.com, iMore, and raywenderlich.com. For more information, visit TammyCoron.com.

Kerry has a background in Psychology and Sociology, and has spent the last 17 years working as a teacher, so she knows a thing or two about learning! She is also a voracious reader, and is excited to bring her talents to the raywenderlich.com family as part of the Book Production team. When she is not helping out Ray and the rest of the team, Kerry is either dreaming about or actively searching for new beaches to explore with her husband, two children and her goldendoodle puppy.

Graphic Illustrator with a Bachelor’s Degree in Fine Arts. I am a perpetual perfection seeker with a big passion for History and Theory of Art. My artistic goal is to find the most creative visual solutions for every idea.

I'm an illustrator and storyteller working to improve my skills and make a career for myself in the creative arts. I draw inspiration through all of my interests, from animation to video games, sci-fi to fantasy, science and nature, travel and culture, emotion and life. I draw inspiration from everywhere and that drives me forward. I’m passionate about conveying stories and messages through dramatic and compelling imagery. More often than not I find myself saying more with pictures than with words. This is how I connect with my audience and this is how I want to connect with you.

Graphic Designer and Illustrator

Graphic designer and illustrator based in Ukraine

Bas is an iOS developer with a passion for testability, accessibility and user-centric apps. Cares about quality and collaboration. In my spare time, I curate Swift Weekly Brief, talk about things on the Contravariance podcast, and work on various open source projects, like GitHawk. Coffee is nice. Watches are cool.

Antonio is a veteran code writer who started tapping on keyboards when memory was measured in bytes instead of gigabytes, storage was an optional add-on, and the most used language was BASIC. Today he loves developing iOS apps, writing node.js backends, and he never misses a chance to learn something new. He finds Swift a very expressive language, and still thinks Objective C is great and unconventional.

Alexis Gallagher has been failing to tear himself away from computers for over a dozen years, including tours in e-commerce firms in New York, in scientific research in Oxford, in front-office trading systems in London, and now via iOS in a pocket near you.

Arthur is an iOS Software Developer at USAA in San Antonio. He is also the iOS developer for Texas3006 - a crowd sourced resource that displays businesses that prohibit the carry of firearms in Texas. He and his beautiful wife Anna are expecting a baby girl, Elianna (Feb 2018). In their spare time Anna and Arthur volunteer at their local church, leading worship music and serving wherever else they are needed in the church.

Alex's day job is at Novoda, where he is a tech lead for Android and iOS apps. He spends his time there helping out clients who have old, rusty codebases, or writing new shiny apps! Alex's passions include clean code and cross-platform development. In his downtime, Alex enjoys cooking and a bit of DIY, getting sawdust all over his flat...

I am an iOS developer from Lviv, Ukraine. When I'm not building apps, I most likely study languages 🇯🇵🇪🇸 or play on my Nintendo Switch.

Andy is a Senior iOS Developer in Atlanta, GA for Delta Air Lines. You can find Andy on LinkedIn or Twitter.

Final Pass Editor for raywenderlich.com Andy loves writing iOS applications, being a dad, doing anything outside, and playing guitar. He realizes there's always room for improvement, and thus is always trying to get better at what he does. When not working on raywenderlich.com, he blogs in the minor leagues at cleanswifter.com.

Adam Rush is a passionate iOS developer with over 7 years of commercial experience, contracting all over the UK & Europe. He's a tech addict and #Swift enthusiast. When he's not writing code, he enjoys watching sports and spending time with his family. You can reach him by email or on Twitter.

Adrian is a freelance iOS developer and Project Manager living in the South West of England. He\'s worked on iPhone and iPad apps since 2010 (iOS3) and specializes in mobile- and web-based application development.

Audrey Tam retired at the end of 2012 from a 25-year career as a computer science academic. Her teaching included Pascal, C/C++, Java, Java web services, web app development in php and mysql, user interface design and evaluation, and iOS programming. Before moving to Australia, she worked on Fortran and PL/1 simulation software at IBM's development lab in Silicon Valley. Audrey now teaches short courses in iOS app development to non-programmers, and attends nearly all Melbourne Cocoaheads monthly meetings.

Brody is a 19 year old game developer from South Jersey. He is the creator of the strategy game To Russia With Love. He enjoys running cross country and watching movies. His favorite movie is Dredd. He also enjoys Linux gaming.

Bhagat is an iOS Developer hailing from New Delhi, India. He likes to make very responsive and user friendly user experiences in his application and is keen on learning new technologies, with iOS Development, IoT and Robotics as his passions.

I'm currently a mobile app and web developer who also has worked in networking and servers. I have been doing iOS development for about two years with my most recent app Coming Light released in November. When not online I can usually be found with a camera in hand or outdoors hiking and quite often both.

Ben Morrow is a developer, author, and hackathon organizer. With the Apple Watch community, he\'s been teaching tools and techniques for the past year to be ready to launch apps when the new device released. Find more video and code at http://happy.watch­ →

Christine is an Engineer on the Developer Advocacy team at Facebook. In this role, she is focused on helping grow the mobile developer ecosystem with emphasis on Android, iOS, and the mobile web. Prior to Facebook, Christine headed up engineering at Mshift, a mobile banking software provider, delivering iPhone apps and mobile browser-based products. You can find Christine on Facebook.

Cesare Rocchi runs Studio Magnolia, an interactive studio that creates compelling web and mobile applications. He blogs at upbeat.it. He's building Podrover and Affiliator. You can find him on Twitter.

I'm the author of the Swift Apprentice. I blog about Swift and iOS development at cosminpupaza.wordpress.com and on the Swift tutorial team at appcoda.com. When not coding, I play the guitar or read a good book. You can contact me at cosminpupaza@gmail.com, on Facebook, Twitter and Google+

A very enthusiastic Lead iOS developer with a very diverse experience, from building games to enterprise applications and POCs, specially when exploring new technologies. In the spare time (or time that can be spared) Ehab enjoys watching a few (more like a lot of TV series) if nothing to watch, video games are just as awesome to say the least :] When trying to move away from a screen Ehab enjoys going through challenging escape-room experience with his awesome friends, & attempt to break the escape records.

Erik is a Principal iOS developer at Target, and an independent consultant at Distilled Bits. Outside of coding, he enjoys cramming as much outdoor activity into summer as he can (running, cycling, rowing, fishing, cabin-ing). In the winter, he patiently waits for summer. You can find Erik on Twitter or his homepage.

Ernesto is a Mac and iOS developer from Spain. After 16+ years of experience developing Enterprise applications, now he is an indie developer who focuses on creating great mobile and desktop applications. He's the founder of CocoaWithChurros where he develops Apps for clients as well as his own. You can also find him on Twitter or Github.

Felipe Laso is a Technical Lead working at Lextech Global Services. He’s also an aspiring game designer/programmer. You can follow him on Twitter as @iFeliLM or on his blog.

Felicity Johnson is an iOS developer at Rent the Runway. After graduating from Villanova University, Felicity worked in finance and started learning Swift as a hobby. She quickly realized that coding was her passion and attended an iOS immersive program. Felicity is thrilled to be doing something she loves every day.

Harrison is a creative technologist, thinking worker, and LinkedIn Learning instructor. His main focus during the day is building iOS applications in Swift, but all his free time goes to game design, Unity development, and technical writing. When he's not reading everything he can get his hands on, he's chasing the feel of golden era hip-hop and taking afternoon naps with his girlfriend and their three cats. You can reach out to Harrison through his company website https://paradigmshiftdev.com.

Jean-Pierre Distler is a freelance iOS Developer based in Braunfels, Germany. He started developing apps in 2010. When he's not on his computer he enjoys time with his family.

Prethep is a tech enthusiast who enjoys developing apps for the iOS platform since the release of the third-generation iPhone. He graduated from the RWTH Aachen University in Germany with a M.Sc. degree in Computer Science. Recently, he joined the RW Team as an iOS Tech Editor.

Jayven is an Apple scholar who contributes his best work to passion, fitness training, and nutrition. Passion makes problem solving an enjoyment. Fitness training keeps him from starring at his Macbook, unrequited love. Nutrition gives him the epic energy he needs to power his day. Jayven enjoys meeting passionate developers from all around the world. Outside from coding, you may find him listening to audiobooks and podcasts, reading, or watching YouTube videos.

Jeff works on enterprise healthcare iOS products at AirStrip Technologies. He found his passion in mobile software shortly after the iOS SDK was released, and made it his full time gig in 2011. He spends his free time with his wife and daughters, except when he abandons them for trips to Cape Canaveral to watch rockets being launched into space. Say hi on Twitter

Kelvin is a Swift Developer. He currently maintains the Swift Algorithm Club. In his free time, he dabbles in web development and server side Swift. Outside of programming work, he's an aspiring entrepreneur. You can find him on his twitter at @KelvinlauKL

Keegan is an independent contractor focusing on mobile solutions. He especially loves being able to work on iOS apps and to provide guidance to other developers looking to learn Swift and iOS. He's an avid runner and a lifelong learner. He tries to read something interesting every day, but it’s obviously not enough, as his ‘Books To Read’ list is already in the hundreds and shows no signs of coming down. You can reach him through his website, TheCodedSelf.com, or follow him on Twitter.

Lorenzo is a Software Engineer who is passionate about mobile development. He has been engineering iOS apps since 2010 but he is comfortable with other languages such as C#, JavaScript and Java. He is not only fond of iOS development but he also has different research interests. In fact, during his Ph.D., he focused his effort on Web Services, Specification and Verification of Software Systems, Business Process Management, Case Management, Intelligent User Interfaces and Healthcare Systems. In his spare time he is studying to become an actor.

iOS Engineer working for Cookpad International.

iOS Developer and Swift fan.

Lea is a Product Manager for mobile at Rent the Runway. She writes about iOS, UX and UI, teaches iOS classes at GA and volunteers for Girls Who Code. In her free time she plays piano, and tries to use code and technology to make art. Or she just doodles and listens to MIKA.

Mark Powell is the User Interface Development Technical Group Lead at NASA Jet Propulsion Laboratory. Since 2001 Mark has been involved in front-end software development and architectures to support the exploration of land, sea, sky and planets with the robotic vehicles that take us there. Since 2012, mobile device applications play an increasingly important role in supporting NASA mission projects. Mark has led and developed more than a dozen mobile applications and related software systems to enable JPL to meet ever greater challenges in exploration. Excited about iOS development, Android development, UX design, open source software development, software process, software application development and leading agile development teams.

Morten is Technical Director at a full-service digital agency in Copenhagen, Denmark. He has a background as an iOS developer and loves tinkering with new innovative technologies. He an advocate of trying new things and taking calculated risks, and thinks you should be too!

Matt is the founder of SwipeStack, a mobile development company based in London, UK which create apps for clients and also a few of their own. One client's app was featured by Apple in the best apps of 2011, the App Rewind in the newsstand category. BeerMap is one of their own creations, helping beer drinkers find a great pub near them! You can find him on Twitter.

Marin is a Swift and Unity developer who likes to work on cool iOS apps and games, nerd out about programming, learn new things and then blog about it. Mostly, though, he just causes SourceKit crashes. He also has a chubby cat. You can read his blog here.

Michael Gazdich is a Pittsburgh native, a Virginia Tech alum, and currently living in Los Angeles as an iOS developer at Instagram. When he is not working, some of his hobbies include Basketball, Golf, gaming on XBOne, or reading up on the latest and greatest in iOS Development!

Michael Katz envisions a world where mobile apps always work, respect users’ privacy, and integrate well with their users’ life. When not coding, he can be found with his family playing board games, brewing, gardening, and watching the Yankees.

Owen is a software engineer with a strong background in mechanical and electrical design. He has 20+ years of experience in writing embedded microcontroller firmware for machine automation. For the last several years, he has focused on integrating machine control with iOS using Bluetooth. He has several cool machine-control Bluetooth LE applications on the app store. Owen is also the author of a book called 'Integrating iOS Bluetooth LE with PIC18 Microcontrollers'. He can be reach via email. Feel free to checkout his website at Back-40.com.

Hi there, I'm Marco and I'm an Italian developer. I moved to London in 2016 to work at Sky as iOS developer. I've been an iOS Developer since 2011 and I sometimes write embarrassing PHP/JS code. I'm keen to learn new things and I spend most of my spare time learning as self-taught. When I don't develop, I like watching MMA fights and cooking Italian food.

Pinal is an iOS Tech Editor @raywenderlich.com. Pinal is passionate for iOS technologies and creating products in education space. When Pinal is not developing products, she is busy travelling, reading or spending time with her 2 kids.

Warren is an Indie iOS and OS X developer living in Peniche, Portugal. He creates interesting tools for Xcode development and mind mapping. When not going screen blind, he goes mountain biking, hiking and surfing.

Richard is the iOS Team Lead for RayWenderlich.com. He has been doing software professionally for nearly 40 years, working on products as diverse as CNC machinery, network infrastructure, and operating systems. He discovered the joys of working with iOS beginning with iOS 6. Yes, he dates back to punch cards and paper tape. He's a dinosaur; just ask his kids. On Twitter, while being mainly read-only, he can be found at @rcritz. The rest of his professional life can be found at www.rwcfoto.com.

Ryan Ackermann is an iOS developer for MartianCraft. Developing iOS apps and games is his passion. Four of his apps are published on the App Store and more are coming. He has been dancing with Swift since it was announced back in June 2014. When he's not programming or designing something in Sketch or Photoshop he spends time with his darling wife Jamie. You can usually find him on Twitter @naturaln0va or you can learn more about him by visiting his Personal Site.

Shai is the iOS Tech Lead @ Gett, the on-demand mobility company. On his spare time you can find him active on several Open-Source projects (mainly the RxSwiftCommunity and RxSwift projects), or playing his guitar and recording & mixing in his home-studio. Shai is also a huge fan of Hackathons and winner of some (1st place BattleHack Tel-Aviv 2014, Battlehack World Finals San Jose 2014, Ford Developer Challenge Tel-Aviv 2015). You can find Shai on GitHub and Twitter.

Yono is an indie app and game developer. He is a co-creater of Gus on the Go, a language learning app for kids. Yono speaks 3 languages fluently and 3 more at a novice level. He has been programming since he was 7 years old, because he enjoys it. Basically, he likes languages and coding. That's his jam. You can find him on Twitter and sometimes writing blog posts at yonomitt.com

Ray Fix is using Swift to help create Revolve--the next generation in research microscopy at Echo. He also serves as the iOS tutorials topics master at RayWenderlich.com. Ray is mostly-fluent in spoken and written Japanese and stays healthy by walking, jogging, and playing ultimate frisbee. When he is not doing one of those things, he is writing and dreaming of code in Swift. よろしくお願い致します。😃

Richard is an iOS developer for MartianCraft, prolific Stack Overflow participant and author of a development blog, Command Shift. When he's not in front of a computer he is usually building Lego horse powered spaceships (don't ask!) with his daughter.

Tom is an iOS Engineer working for Let's Do This in London. When he's not hacking up new ideas you'll find him on two wheels, spinning along the tarmac or bouncing down the hills :)

Ron is the iOS lead at Wisdo, a platform for experience-based social networking. He's been developing iOS for the past 6 years, and spends his spare time writing apps for his daughters to play with.

Founder of www.poccaDot.com. Passionate about everything iOS related - especially teaching and developing.

iOS developer at Capital One to change banking for good. twitter | linkedin

A software developer by day, and an iOS-Swift enthusiast by night, he believes that sharing knowledge is the best way to learn and grow as a developer. Vincent starts every morning with a homemade green smoothie in hand to fuel his day. When he is not in front of a computer, Vincent is training to play in small golf tournaments, doing headstands at various locations while on a hiking adventure, or looking up how to make tamago egg. You can find him on twitter @vincentngo2.

Johannes is a freelance iOS developer. He's one of those dinosaurs who first developed for the Mac and then switched over to iOS when the first SDK was released in 2008.

Swift and iOS. I also work on running ml on mobile.

Daniel is an iOS Developer from Ceara-Brazil. He started his career as a Backend Developer and moved to other technologies until started focusing on being an iOS specialist. Although this is just a stereotype for Brazilians, he actually loves soccer. But he's learning and enjoying American Football now as well.

I'm a Software Engineer. Most of my recent experience comes from iOS development, but also had some fun with web development in the past 10 years. Basketball fan and player, and a decent dancer. Love learning and teaching at all levels.

Mark has been an iOS developer for 7+ years. He currently works as a lead at Lowe's Home Improvement on their iOS app. He has been doing software professionally for 15+ years. You can reach him on Twitter at @ski081. He also writes occasionally at markstruzinski.com.

Mic Pringle is a mobile application developer by trade, but has recently found himself dabbling in Ruby, PHP, and JavaScript. When not knee-deep in code, Mic enjoys spending time with his wife Lucy and their daughter Evie, watching his beloved Fulham football club, and weather permitting, tearing up the English countryside on his Harley Davidson.

Zaphod Beeblebrox is a contributor to raywenderlich.com

My name is Soheil Azarpour and I'm an engineer, developer, author, creator, husband and father. I enjoy bicycling, boating and playing piano. I live in Manchester, NH. I create iOS apps professionally and independently. You can find me on Twitter, GitHub, Stack Overflow and LinkedIn.

Todd Kerpelman used to be a halfway decent game designer, until he tricked Google into hiring him on as a Developer Advocate, and now he spends his time making YouTube videos. He figures it's just a matter of time until they discover he doesn't know what he's talking about, so he's stockpiling snacks in the meantime.

A lifelong learner, automation enthusiast, DevOps lover and Mobile Architect with an eye on design. I have been developing for iOS since iPhone OS 3, I have started with Objective-C and then moved to Swift since version 1.2. I also tried a lot of technologies like JavaScript, PHP, MySQL, HTML, CSS for web development and Java, Kotlin and Cordova for mobile apps.

Rui has been developing for iOS since 2010​ when he started in Portugal. Nowadays, he is an Engineering Manager at Babylon Health in London. When he is not a paperboy, you can find him trail running. ⛰🏃‍♂️

Dru started writing code for Apple products at the age of 11 when he received an Apple ][. Note, not a plus, not an e... just a ][. As computers and the internet were only a passing fad (said the sales guy at CompUSA) he went off to study Theatrical and Mass Media production. As a result he self taught himself through Basic, Pascal, Object Pascal, C, C++, Objective-C, and then Swift. Many years ago he discovered writing code paid more than waiting tables.

I am a freelance Android and iOS developer as well as a full-time computer science professor for Aims Community College in Colorado where I teach a certificate in mobile app development including Android and iOS platforms. I also teach courses in Python, Java, C++ and a certificate for development in the .NET platform utilizing C#. Prior to teaching, I was a full-time software engineer creating .NET applications in C# for a financial industry. I am also a writer and an organizer for the Google Developer Group of Northern Colorado. I enjoy attending the Google I/O conference as well as various Android meetups and conferences around the United States. In my spare time, I enjoy rollerblading, horseback riding and spending time with my teenage daughter and two dogs.

Katie is a video editor, podcast producer and Razeware's customer support lead. When not sat behind a screen she enjoys spending time with her husband and three little boys, and eating good food.

Anthony is a Lead iOS Engineer at Globant In his spare time he likes to play golf, go see a movie at least once a week, continue to learn and spend time with his family.

Annette is a recruiter for raywenderlich.com. After spending many years in programming and technical writing, she started her own small tech business. Annette just completed her second 5K walk in a cave!

Ben Morrow is a developer, author, and hackathon organizer. With the Apple Watch community, he\'s been teaching tools and techniques for the past year to be ready to launch apps when the new device released. Find more video and code at http://happy.watch­ →

Erik is a Principal iOS developer at Target, and an independent consultant at Distilled Bits. Outside of coding, he enjoys cramming as much outdoor activity into summer as he can (running, cycling, rowing, fishing, cabin-ing). In the winter, he patiently waits for summer. You can find Erik on Twitter or his homepage.

Jean-Pierre Distler is a freelance iOS Developer based in Braunfels, Germany. He started developing apps in 2010. When he's not on his computer he enjoys time with his family.

Morten is Technical Director at a full-service digital agency in Copenhagen, Denmark. He has a background as an iOS developer and loves tinkering with new innovative technologies. He an advocate of trying new things and taking calculated risks, and thinks you should be too!

I have over 10 years experience writing reports and querying data in Oracle's PL/SQL. I have been studying iOS development since 2015. I am also currently studying Web development.

A dad, software developer, investor, frequent traveler, reader, foodie, miles and points spender. Over-thinking it since 1975.

Software developer in Dnipro, Ukraine. She is passionate about Android, animations, public speeches and Kotlin. You can find me on Medium and GitHub

Enrique López Mañas is a software engineer, mostly focused on Android and backend development with Java/Kotlin. As a contractor, he has filled his hours with an eclectic variety of technologies: TensorFlow, iOS, Swift, NodeJS, RoR, and Python. Before Living by the Code, he published the books Android High Performance, 100 Android Questions and Answers, and 100 iOS Questions and Answers. He has been a member of the Google Developer Expert crew since 2014. Besides his programming duties, he also runs a few side projects. He is the editor and maintainer of Kotlin Weekly, a mailing list that delivers news about the Kotlin universe every Sunday. He is the organizer of Kotlin Users Meetup Group Munich and Droidcon Vietnam. He speaks monthly on the I/O Investing podcast about finances and investing. In his free time, he reads, writes, and runs long distances for extended periods of time. Over time, he has developed an interest in finances, communities, science fiction, and high-performance sports. He tries to practice transparency, and shares as much as he can on his Twitter account (@eenriquelopez).”

Ash Furrow is a Canadian iOS developer and author, currently working at Artsy. He has published several books, built many apps, and is a contributor to the open source community. On his blog, he writes about a range of topics, from interesting programming to explorations of analogue film photography.

Derek is an iOS developer? LOLololol...

Aaron was that kid taking apart the mechanical and electrical appliances at five years of age to see how they worked. He never grew out of that core interest - to know how things work. He took an early interest in computer programming, figuring out how to get past security to be able to play games on his dad's computer. He's still that feisty nerd, but at least now he gets paid to do it. Aaron works for Automattic (WordPress.com, Akismet, SimpleNote) as a Mobile Maker primarily on WordPress for iOS. Find Aaron on Twitter as @astralbodies or at his blog at https://aaron.blog.

Eli works as an iOS engineer for Facebook. He has been developing iOS apps and working as an Instructor for over 8 years.

Ellen Shapiro is an iOS developer for Bakken & Bæck's Amsterdam office who also occasionally writes Android apps. She is working in her spare time to help bring songwriting app Hum to life. She’s also developed several independent applications through her personal company, Designated Nerd Software. When she's not writing code, she's usually tweeting about it.

Making games and making tools to make games. Emergent Technology Developer @ Unity. Worked on Unity ARKit Plugin and Unity ARKit Remote. Cross platform interface for ARKit and ARCore.

Jawwad currently works as an iOS Engineer at Facebook. LinkedIn | GitHub | StackOverflow

Josh is a freelance iOS engineer who loves building thoughtful user experiences on mobile. He's built apps for the iPhone and iPad since 2008. Josh recently finished culinary school in Austin, TX. When he's not coding, he's probably cooking or dreaming of food.

One of the authors of the "Reactive Programming with RxSwift" book, Florent has been developing for mobile platforms since the last century and moved to iOS on day 1. He adopted reactive programming before Swift was announced and has been using RxSwift in production since 2015. A freelance developer, Florent also uses Rx on Android and likes working on tools for developers like the popular NSLogger when he's not contracting for clients worldwide.

Swiss-Brazilian engineer based in the middle of Switzerland. He loves to work on mobile technologies, but has a lot of experience with backend development as well with technologies like Rails, Scala, Node.js and Java.

Lead VR Game Developer at Wolf and Wood. Developer on A Chair In a Room, The Harbinger Trial and The Exorcist : Legion VR. Part of the Bafta VR Advisory Group.

Linux geek and part of Qutheory, LLC (The company behind Vapor and Vapor Cloud). Very interested in Cloud, AWS, Kubernetes, and in general everything Linux :)

Former librarian passionate about languages both human and code-based. When not working as an iOS Developer, Jay enjoys being an ESL conversation partner and reading zines. Find me on LinkedIn.

I am an app developer and Metal API blogger. I am also a computer scientist. I have more than a decade of experience with systems, support, integration and development. You can often see me on Twitter talking about Metal, GPGPU, games and 3D graphics. When I'm away from computers, I enjoy music, biking or stargazing.

Matthew Morey is an engineer, developer, hacker, creator, and tinkerer. As an active member of the iOS community and CTO at MJD Interactive he has led numerous successful mobile projects worldwide. He’s the creator of Buoy Explorer, a marine conditions app for water sports enthusiast, and Wrist Presenter, an app that lets you control presentations wirelessly with your smart watch. When not developing apps he enjoys traveling, snowboarding, and surfing. He blogs about technology and business at matthewmorey.com.

raywenderlich.com author. realm alumni. More at: www.underplot.com

René, @rcachATX, is an iOS Client Architect at Atlassian, where he is known for his expertise in user interface engineering with UIKit, Core Animation, and Core Graphics. He has been engineering iOS apps since 2009. When he's not coding, René loves to snow ski, ocean kayak, and root for the Texas Longhorns.

Developer by trade but I add value anyway I can. Writer, podcast host, and advisor at nogradient.com. Most things are superfluous.

I've been an iOS developer since the first public release of the SDK from Apple. My "day job" is working as a Solutions Architect for a Fortune 500 company in the Pacific Northwest but I do contract work for a couple clients via my one-man shop, Gargoyle Software, LLC.

Scott is a book, video course and tutorial author, and presenter on the RayWenderlich.com team. He’s authored over a dozen books, video courses, tutorials, and articles on iOS app development — with a focus on reactive programming. He’s also presented at numerous conferences. Additionally, Scott teaches app development and is an Apple Certified Trainer for Swift and iOS. Scott has been developing iOS apps since 2010, ranging from personal apps that have won awards to working on enterprise teams developing apps that serve millions of users. Scott is a veteran of the United States Marine Corps and he lives in the St. Louis, MO area. You can find Scott on Twitter or GitHub as @scotteg or connect with him on LinkedIn at scotteg.com.

Steven is a computer science lecturer at the University College of Ghent, Belgium. When he's not teaching, Steven can be found on his bike, rattling over cobblestones and sweating up hills, or relaxing around the table, enjoying board games with friends. You can contact Steven on Twitter.

Software engineer and creator of the Vapor web framework.

A software developer by day, and an iOS-Swift enthusiast by night, he believes that sharing knowledge is the best way to learn and grow as a developer. Vincent starts every morning with a homemade green smoothie in hand to fuel his day. When he is not in front of a computer, Vincent is training to play in small golf tournaments, doing headstands at various locations while on a hiking adventure, or looking up how to make tamago egg. You can find him on twitter @vincentngo2.

iOS @UpsideTravel. Co-author of Core Data by Tutorials and iOS 9 by Tutorials.

Matthijs Hollemans is an independent contractor who specializes in algorithms, machine learning & deep learning on iOS. Visit his website at http://machinethink.net.

Allen Tan is an iOS Developer and Founder at White Widget, a Philippines-based start-up mobile apps & games development studio that does both contractual and indie work. Right now, Allen’s pretty much devoting all of his time getting the studio off the ground. To find out more, you can follow White Widget’s Facebook page & Twitter for announcements. You can also check out Allen’s personal LinkedIn profile and Twitter, or reach him for work via email.

Fahim is a developer with over 25 years of experience in developing in over a dozen different languages. Fahim's current focus is on the mobile app space with over 80 apps developed for iOS (iPhone and iPad), around 10 macOS apps, and a few Android apps. He's the CEO of RookSoft FZC in the United Arab Emirates. He's lived in Sri Lanka, USA, Saudi Arabia, New Zealand, Singapore, Malaysia, France, and the UAE, and enjoys science fiction and fantasy novels, TV shows, and movies. You can reach him either via e-mail or Twitter.

Salih is a Berlin based Android & Flutter Developer who follows all the cutting edge technologies for the mobile world. He also likes sharing his knowledge with the people by mentoring aspiring developers, creating study groups and blogging.

Yun is a software engineer for the Runkeeper app at ASICS Digital in Boston, Massachusetts. If she's not running marathons or facilitating for the Girls Who Code club in Cambridge, MA, you can probably find her setting off the kitchen fire alarm with her cooking.

Chris is a software developer and architect at IBM. He’s been working on programming languages and web frameworks longer than its polite to discuss. Somewhere along that journey he got got involved in the very early days of Swift on Linux and became the chief architect for the Kitura web framework.

Matt leads developer relations for Flutter from Google’s Mountain View campus, having previously worked on Android and Wear OS. He’s a bit of a language geek, and has recently enjoyed picking up Dart and a little bit of Kotlin along the way. When he’s not hacking on Flutter, you’ll probably find him in the gym wearing far too many fitness sensors.

I'm a designer with over 19 years of working experience. I graduated from the Stanford Design Program, ran a design consultancy company for several years working with startups and companies such as Google, Autodesk, and Dropbox. I was the original designer of the Fitbit mobile app. I am now the design director at Capital One labs. I'm also a father of a wonderful son.

Alessandro is co-founder and CTO of Inglobe Technologies/ARMedia, a company that specialises in Augmented Reality applications development and services. His experience in Augmented Reality and related technologies spans over 10 years, during which he had the chance to complete several projects in many different application domains (Cultural Heritage, Architecture & Engineering, Education & Training, Industry, Media). Along with regular production activities he also spends a good amount of time on learning new things and research activities as well.

Phil's been delivering large-scale software solutions for many years, as well as working with startups as a board member, mentor, and coach. He's worked with neural networks for over a decade–starting in 2006–and enjoys combining deep learning with intuitive and elegant user experiences across mobile and web. In his spare time he writes music, drinks coffee at a professional level, and can be found scaling cliff walls, sea kayaking, or taking part in competitive archery.

Chris began programming back when a computer with 256 kilobytes of RAM was something to brag about. Now he’s an independent developer and contractor focused on machine learning and video games. When not staring at computer screens, he’s usually cooking or relaxing with his wife and kids. You can reach Chris via email or find him on Twitter.

I'm the author of the Swift Apprentice. I blog about Swift and iOS development at cosminpupaza.wordpress.com and on the Swift tutorial team at appcoda.com. When not coding, I play the guitar or read a good book. You can contact me at cosminpupaza@gmail.com, on Facebook, Twitter and Google+

Gina is a self taught iOS developer from Southern California. She began her iOS journey in 2014 and loves Swift! When she is not working on apps, she's catching up on Adventure Time episodes. On sunny days (which is often in SoCal) she is working on her grilling skills and is always experimenting with recipes.

Fayyaz has been an iOS developer for approximately five years, and loves all things Apple. His interests include networking, Core Data, and UITableViews. Fayyaz was born and raised in Toronto, Canada, where he lives with his family.

Jayant lives in Melbourne, Australia and has been interested in the bits and bytes since the days of the 8-bit computers, starting with the ZX Spectrum, managing IT Department for Countrywide BMW Dealerships in a couple of countries, Lecturing at the University and Authoring Books. With over 25 years in the IT Industry, he has seen many technologies change, currently he is set on Swift and has written a couple of books on it. A developer at heart, he has been in both Leadership and hands-on roles and has developed several mobile apps since 2009.

Najmm is a Kashmiri developer, working primarily with XR technologies. He is a video game enthusiast and is absolutely in love with superheroes, sci-fi and the surreal.

Hey! My name is Ajay Venkat and I'm 16 years old and a very passionate game developer. I love working in Unity and learning new things, I am especially fond of machine learning and I always love to teach people everything I know. I currently go to school in Australia but hope to go to America for university!

Anthony is a hardcore gamer and is making a game called Grrbls. You can follow along with development at www.Grrbls.com.

Ben is a musician turned software developer who spends most of his development time making buildings appear in Augmented Reality. In his spare time he also edits for the video and board game review site Glitch Free Gaming. Or is off exploring the universe of the Traveller role-playing game.

Brian is an instructor at Razeware who develops courses and screencasts on a wide variety of topics of iOS development. When not teaching, Brian plays board games, studies aikido, and tries to keep up with his wife and two kiddos.

Eric is a belgian hobbyist game dev and has been so for more than 15 years. He started with DarkBasic, RPG Maker, Game Maker and XNA. Since 2011 he makes games using Unity. Eric also takes interest in 3D modeling, vector art and playing video games. He is the proud Unity team lead.

Chris is a creative developer & designer with 20+ years of experience. He has fond memories of his beloved Commodore 64. At day, he fights corporate beasts from the concrete jungles of South Africa. At night he fights demons, dragons & hordes of zombies. For relaxation he codes & tinkers with 3D printing. Author of 3D Apple Games by Tutorials Co-author of ARKit by Tutorials Co-founder of Day of the Indie You can find Chris on Twitter. Forever Coder, Artist, Musician, Gamer, Maker & Dreamer.

Gijs is an indie Unity developer working from his own company www.oddz.nl. Gijs likes to work on educational games and art related projects. He has also started working with VR

Jeff is an indie game developer and co-founder at Luna Wolf Studios. He’s certified in Unity development, and has a degree in Game Design and Development from Wilmington University. Jeff has published numerous games for various platforms, and has worked with a variety of clients. When he’s not making games, he’s most likely talking about them.

Professional Game Programmer, Author of Unity in Action Joe's a software engineer living in Chicago, specializing in interactive media development. He builds games and apps for both mobile and web using technologies like C#/Unity and JavaScript/HTML5. Besides his professional work, he maintains a dev log about his personal projects.

Freelance game artist and hobbyist game developer... occasional author for Ray Wenderlich gamedev books.

Mark works with his wife making gorgeous apps and games, she does design and illustration and he does the coding. Currently they are working with InfoAktiv making educational games and tabletop interactive applications for museums and other heritage institutions using Unity. When work is slow he is also cooking up a social iOS app with a company he co-founded with some friends. Besides that he's trying hard to give his kids the same misspent youth he had in video games, loves going to the cinema, and dabbles in am-dram.

Freelance developer, founder of blockchain3d.info, Unity-powered analysis of the Bitcoin Blockchain in 3D and VR.

Sean is a software engineer by day, and hobbyist game and tools developer by night. He loves working with Unity, and is also a Unity Asset Store developer with a special focus on 2D tools to help other game developers. Some of Sean's more popular Unity Assets include his 2D Shooter Bullet and Weapon System and 2D Homing Missiles assets. You can find Sean at his personal blog or on Twitter

Toby is a software developer inspired by games. When he's not programming or otherwise staring at a screen, you can find him exploring the backcountry, drinking beer, learning a new language, or staring at a wall, absent-mindedly absorbed in his own thoughts. He and his brother made Coffee Pot Terrarium, a turn-based puzzle game and finalist at the Google Play Indie Games Festival 2016.

Raunaq is Software Engineer currently living in New Delhi, India. Having worked as a Unity3D developer for the past 2 years, he has made a number of award winning Augmented Reality applications, and is now exploring the world of Computer Vision and Machine Learning.

Nam is a software engineer with a former background in IT Security. In his past life, Nam used to spend most of his time delving into the low-level inner workings of software systems and malware samples, using his reverse engineering skills. His innate curiosity eventually made him fascinated with the multidisciplinary nature of game development. Nowadays you can find him programming, reading, playing video games and indulging in Japanese media.

By day, Brian is an iOS developer working for SpotHero in Chicago. By night, he's a hobbyist Unity developer that stays up far too late making terrible video games. Sometime between day and night, he's also a musician and a writer. Brian enjoys going to loud concerts, drinking coffee, cooking savory meals, and spending time with his cat and his dog.

iOS and Unity Engineer | Founder of UnityBR in Brazil | Winner of important brazilian hackathons (Mastercard and Facebook SHIFT, Ambev HackTheWorld, CodeForce Santander, Globo Hackathon, MovileHack, Itau Insights and Hackathon Iguatemi) | Attendant of international events (Vision Summit 2017 at Los Angeles-CA, MENA Transport Global Hackathon, Future Blockchain Summit at Dubai-UAE and Apple WWDC18 at California) | Traceur (parkour practitioner) | Flugelhornist | Founder of Plantae - Urban production of vegetables and the exchange of excessive produced between community members. Used technologies: Swift/Kotlin (mobile app), geolocation (matchmaking between community members), Apple/Samsung pay, Apple/Samsung health, machine learning for vision computation, AR and IoT (vegetable’s quality analysis).

Jonathan Parham is a senior mobile engineer. His focus is on iOS and Unity, and he has a history in 3D art. He spends most of his time with his family, blogging, practicing martial arts, or playing video games.

Margaret is a game designer, Unity developer and for the past several years a professor teaching both. Before that she did web development, starting from when JavaScript couldn’t do much more than show alerts through hybrid mobile apps in Backbone and React. You can find her on Twitter.

Is a developer of scientific visualization software for the life sciences. He is also a lifelong gamer and creator of the mixed-reality app, Titan MR, which allows users to explore the surface of Saturn's moon, Titan, and was a finalist for the 2018 Windows Developer Reality Mixer of the Year award and featured in the Unity HoloLens Contest.

Pasan Premaratne is an iOS developer at Credit Karma. Prior to that he spent 7 years at Treehouse, teaching people Swift and iOS development full time. Outside of coding you can find Pasan hanging out with his kids or enjoying a good book.

Timirah is a singer/songwriter turned mobile engineer turned Developer Evangelist (@Cloudinary). She's worked at several startups building cool iOS, WatchOS, and tvOS applications. Timirah is also a former iOS Instructor at MakeSchool, and is heavily involved in the tech community as an organizer, mentor, and tech workshop facilitator for several hackathons and meetups –– including her own meetup called TechniGal LA, which exposes girls of all ages to learning and employment opportunities in STEM. Fun Fact: She released a code-inspired song called "Coderitis" on Spotify!

I love working where technology meets design, and that's why I build iOS apps. I'm a Co-Founder of Thumbworks, an iOS Design and Development company focused on helping businesses of all sizes solve problems and meet their goals while building beautiful apps. For the past 7 years I've been very excited about the future of reactive programming, as I've been working with ReactiveCocoa and RxSwift for most of my projects. I get a lot of enjoyment out of pushing declarative architectures as far as they can go. Naturally I'm very happy with the advent of SwiftUI and the Combine API, and will be aggressively learning those for the next generation of apps. I have a background in multimedia and design, and bring an eye for user experience and usability to the table. It's great to use analytics to improve your app, but I think it always needs to be done with user friendliness in mind. At the end of the day, I think even utilitarian apps should be a joy to use. I'm interested in creating experiences that improve people's lives, whether it's a well designed interface for an end user, or a clean and obvious API for other developers.

Scott is an iOS developer at Lyft and an avid open source contributor. With libraries like SDCAlertView and SDCAutoLayout, he tries to improve those parts where the iOS SDK falls short. He occasionally blogs at ScottBerrevoets.com and is also active on GitHub and Twitter.

Alex is an Android and iOS developer at (Thoughtbot)[https://thoughtbot.com/] in Boston, MA. He's a big fan of reactive programming and learning about new ways to create silky smooth Android and iOS applications. In his spare time he enjoys reading, playing video games and rewatching Star Trek: The Next Generation for the billionth time.

Former Victoria's Secret model, first Calvin Klein African-American exclusive, now acting, coding iOS apps for clients, and advocating for women and minorities in tech. www.LyndseyScott.com

Evan Stone is the owner of Interactive Logic, his iOS software consulting business based out of Sonoma County, California, and is also the host of iOS Dev Break podcast. He has been developing for the iOS platform since Retain/Release. Evan loves developing in Swift, podcasting, and performing the occasional mobile DJ gig now and then...

Barrett is a senior software developer that has focused on mobile development for the last 6 years. In the last couple years he has worked with client big and small across 5 continents like the Emirates Groups, Accor North America to start ups like Zugata. Barrett is passionate about learn new technologies as well as mentoring and helping others getting started in their programming career. When not coding he likes to spend his time in the mountains of Utah hunting and fishing with his wife and three daughters.

Brian is an instructor at Razeware who develops courses and screencasts on a wide variety of topics of iOS development. When not teaching, Brian plays board games, studies aikido, and tries to keep up with his wife and two kiddos.

I’m an indie iOS developer. When I’m not developing, I’m playing around with 2D and 3D animation software, or learning Arduino and electronics. In my past I’ve taught the elderly how to use their computers, done marionette shows for pre-schools, and created accounting and stock control systems for mining companies.

Catie makes things for, with, and about Apple tech in collaboration with her husband, Jessy! She is inspired by everyone at raywenderlich.com to be a positive force in the world. When away from her desk, Catie lifts heavy things, runs around outside throwing Westside Discs, pines for excellent gaming experiences, and tells her cat, Princess Ozma, how fluffy she is.

David Okun is a Developer Advocate for IBM, focusing on Swift in the cloud and other API oriented practices. He is one of the co-organizers of the Swift Cloud Workshop, a free conference which invites people to discuss uses for Swift in the cloud and everywhere other than iOS. He is also passionate about open source iOS work with AVFoundation.

Divyendu is from the top part of India, a beautiful place called Jammu and Kashmir. He loves to write code both as a hobby and production level. He has been writing hobby code for over a decade and professionally for 3 years. When not coding he engages in football, reading, travels, food (not in order). He can be found on twitter @divyenduz, github @divyenduz, personal site divyendusingh.com and his blog

A very enthusiastic Lead iOS developer with a very diverse experience, from building games to enterprise applications and POCs, specially when exploring new technologies. In the spare time (or time that can be spared) Ehab enjoys watching a few (more like a lot of TV series) if nothing to watch, video games are just as awesome to say the least :] When trying to move away from a screen Ehab enjoys going through challenging escape-room experience with his awesome friends, & attempt to break the escape records.

Jerry is a co-founder of Five Pack Creative, a mobile development company specializing in iOS development. He’s worked on client projects, like American Airlines and Match.com, but lately he’s been pouring his focus into Hours, a time tracking app. He is passionate about creating well-crafted code and teaching others. Jerry enjoys spending time on the beach with his wife and kids, SCUBA diving, and watching movies. You can get in touch via email or Twitter.

In my day job, I write apps (Java, iOS) for space and health at APL. I also teach at the JHU Whiting School Engineer for Professionals Program ("Mobile Applications for the iOS Platform"). Now I'm also a iOS screencaster at raywenderlich.com!

Fascinated by technology consistently making learning easier, Jessy enjoys exploring new techniques involving creative software and hardware combinations, and imparting the experience to others. Along with his wife Catie, you'll find him doing so around here in the form of video tutorials. 😺📹

James is an iOS developer living in Scottsdale, Arizona. He is an avid road cyclist who has taken solo rides from San Francisco to Los Angeles, and Los Angeles to Phoenix. It's difficult to find him in a situation where he isn't either developing or cycling!

<3 coding

I really enjoy developing Android and iOS applications and in my spare time create apps that I freely share. I have been programming on the Android platform for over 8 years and iOS for a year. I have a course on Kotlin on raywenderlich.com and have done talks at conferences.

Lorenzo is a Software Engineer who is passionate about mobile development. He has been engineering iOS apps since 2010 but he is comfortable with other languages such as C#, JavaScript and Java. He is not only fond of iOS development but he also has different research interests. In fact, during his Ph.D., he focused his effort on Web Services, Specification and Verification of Software Systems, Business Process Management, Case Management, Intelligent User Interfaces and Healthcare Systems. In his spare time he is studying to become an actor.

Lea is a Product Manager for mobile at Rent the Runway. She writes about iOS, UX and UI, teaches iOS classes at GA and volunteers for Girls Who Code. In her free time she plays piano, and tries to use code and technology to make art. Or she just doodles and listens to MIKA.

Ray is part of a great team - the raywenderlich.com team, a group of over 200 developers and editors from across the world. He and the rest of the team are passionate both about making apps and teaching others the techniques to make them. When Ray’s not programming, he’s probably playing video games, role playing games, or board games.

Sam is the CTO of Razeware, the company behind the popular training site raywenderlich.com. He spends his time building the site, creating tutorial videos and doing battle with the internet.

When he’s not working, you’ll find him backstage in a theatre, or entertaining crowds of people with his trombone. You should say hi to him on Twitter: @iwantmyrealname, seek him out as sammyd on GitHub, or check his personal site iwantmyreal.name.

Currently, Spiro is an independent freelance developer who runs a Cincinnati based technical consultancy, Material Cause, specializing in native mobile experiences. He has worked in advertising and marketing technology for over 15 years developing award winning solutions for top brands. Outside of coding, he enjoys long distance running and spending time with his wife and 2 year old daughter.

Scott is a book, video course and tutorial author, and presenter on the RayWenderlich.com team. He’s authored over a dozen books, video courses, tutorials, and articles on iOS app development — with a focus on reactive programming. He’s also presented at numerous conferences. Additionally, Scott teaches app development and is an Apple Certified Trainer for Swift and iOS. Scott has been developing iOS apps since 2010, ranging from personal apps that have won awards to working on enterprise teams developing apps that serve millions of users. Scott is a veteran of the United States Marine Corps and he lives in the St. Louis, MO area. You can find Scott on Twitter or GitHub as @scotteg or connect with him on LinkedIn at scotteg.com.

Server-side Swift co-team lead @ raywenderlich.com Vapor expert and mobile developer who has dabbled in everything from reverse engineering to embedded development. I guess I should describe myself as a full-stack developer!

Vijay is a husband, father and senior mobile engineer. Based out of Canada's capital, Vijay has worked on dozens of apps for both Android and iOS. When not in front of his laptop, you can find him in front of a TV, behind a book, or next to his kids. You can reach out to him on Twitter @v_sharm or LinkedIn @vijaysharm

Tim is a mobile app developer, podcaster and artist. He also teaches iOS dev, Swift and Objective-C. Tim is a lead iOS developer at TD Bank. He also runs iT Guy Technologies, a software development company in Toronto, Canada. He studied Fine Arts before there were Macs and he's worked for many years in software development, IT, graphic design, publishing and printing. He is also the founder, producer and host of the More Than Just Code Podcast on mobile app development & business. Tim is also co-host of Roundabout Creative Chaos podcast.

Andrea Lepley is an author, editor, artist and twin. As raywenderlich.com's Video Team Lead, she dreams in Trello and makes Gantt charts for fun. She wishes she had spare time, so she could spend it eating cheese and writing stories about cats.

I am a freelance Android and iOS developer as well as a full-time computer science professor for Aims Community College in Colorado where I teach a certificate in mobile app development including Android and iOS platforms. I also teach courses in Python, Java, C++ and a certificate for development in the .NET platform utilizing C#. Prior to teaching, I was a full-time software engineer creating .NET applications in C# for a financial industry. I am also a writer and an organizer for the Google Developer Group of Northern Colorado. I enjoy attending the Google I/O conference as well as various Android meetups and conferences around the United States. In my spare time, I enjoy rollerblading, horseback riding and spending time with my teenage daughter and two dogs.

I'm the author of the Swift Apprentice. I blog about Swift and iOS development at cosminpupaza.wordpress.com and on the Swift tutorial team at appcoda.com. When not coding, I play the guitar or read a good book. You can contact me at cosminpupaza@gmail.com, on Facebook, Twitter and Google+

iOS and Android developer that enjoy being challenged and working on projects that require me to work outside my comfort and knowledge set, as continuing to learn new languages and development techniques are important to me. Working nowadays in a bank from Brazil (@SICOOB_oficial) in the iOS team. I love drink craft beer when I have a free time :]

Gina is a self taught iOS developer from Southern California. She began her iOS journey in 2014 and loves Swift! When she is not working on apps, she's catching up on Adventure Time episodes. On sunny days (which is often in SoCal) she is working on her grilling skills and is always experimenting with recipes.

Adrian is a freelance iOS developer and Project Manager living in the South West of England. He\'s worked on iPhone and iPad apps since 2010 (iOS3) and specializes in mobile- and web-based application development.

Marin is a Swift and Unity developer who likes to work on cool iOS apps and games, nerd out about programming, learn new things and then blog about it. Mostly, though, he just causes SourceKit crashes. He also has a chubby cat. You can read his blog here.

Cesare Rocchi runs Studio Magnolia, an interactive studio that creates compelling web and mobile applications. He blogs at upbeat.it. He's building Podrover and Affiliator. You can find him on Twitter.

Joshua Greene is an author and video instructor for RayWenderlich.com. He's an experienced software developer and has created many mobile apps. When he's not slinging code, you can find him wandering the streets of Tokyo. Reach him on Twitter @jrg_developer.

Mobile Developer passionate about creating amazing apps with great user interfaces. Founder of aldominium.com, company dedicated to create awesome video tutorials for college students.

Lead iOS Developer & Contractor. Baptised as a Disciple of Code! and a joyful part of the Ray Wenderlich iOS Video Team. Also teaches on Udemy and is a total 'Learn-o-holic'. Enthusiasm has been known to overwhelm.

Jonathan Wong runs the mobile team at Tealium building data collection libraries and is a member of the video team at raywenderlich.com. He’s a software engineer in sunny San Diego where he’s worked on everything from mobile apps, to front-end Javascript, to server-side development. When he’s not taking care of his two kids, three cats, or five chickens, he’s usually trying to steal away time for a good run or a good cup of coffee.

Software professional hanging out in the southwest US desert. Interested in all sorts of languages, good user experiences, and collaboration through technology. I enjoy learning new things and helping others do the same.

👨🏼‍💻 Tech Enthusiast — Nerddad x 2 — 💻 Technical Director Nodes Agency — ✍️ https://medium.com/@cweinberger — 💧 Vapor in production

Jonathan Wong runs the mobile team at Tealium building data collection libraries and is a member of the video team at raywenderlich.com. He’s a software engineer in sunny San Diego where he’s worked on everything from mobile apps, to front-end Javascript, to server-side development. When he’s not taking care of his two kids, three cats, or five chickens, he’s usually trying to steal away time for a good run or a good cup of coffee.

Serverside Swift & iOS Developer. Two time WWDC Scholarship winner. Currently working at Wehkamp, one of the biggest online retailers in the Netherlands. In my spare time I enjoy playing video games, or working on various side projects.

Brian lives in Portland, Oregon and is Mobile Team Lead with Beezwax Datatools. He's mastered technologies ranging from deep data back-end tools to front-end UI and UX best practices, and is currently happily obsessed with all things Swift. When not coding, Brian can be found hiking, tending bamboo, woodworking, or hanging out with the world's two bestest dogs and enjoying a good craft brew or three.

I started programming in the early 1980s and was an instant Mac fan as soon as I saw my first one. When it became possible to write apps for the iPhone, I taught myself Objective-C and started to program for iOS and then for Mac OS X using Objective-C. As soon as Swift was announced, I realised that it would be the next great thing and started reading and learning as much as I could. I write my own apps under the name TrozWare and blog (mainly about Swift) at http://troz.net I love puzzles, reading (mainly fantasy & sci-fi) and talking about tech and programming.

Software Developer originally from the U.K. but now residing just outside of Washington D.C. in Northern Virginia. Currently working as an app developer specializing in iOS for M.C. Dean, Inc, a systems integration provider based out of Northern Virginia. When not coding you will find me enjoying EPL Football, spending time with my family and traveling as much as possible

Audrey Tam retired at the end of 2012 from a 25-year career as a computer science academic. Her teaching included Pascal, C/C++, Java, Java web services, web app development in php and mysql, user interface design and evaluation, and iOS programming. Before moving to Australia, she worked on Fortran and PL/1 simulation software at IBM's development lab in Silicon Valley. Audrey now teaches short courses in iOS app development to non-programmers, and attends nearly all Melbourne Cocoaheads monthly meetings.

Shai is the iOS Tech Lead @ Gett, the on-demand mobility company. On his spare time you can find him active on several Open-Source projects (mainly the RxSwiftCommunity and RxSwift projects), or playing his guitar and recording & mixing in his home-studio. Shai is also a huge fan of Hackathons and winner of some (1st place BattleHack Tel-Aviv 2014, Battlehack World Finals San Jose 2014, Ford Developer Challenge Tel-Aviv 2015). You can find Shai on GitHub and Twitter.

Server-side Swift co-team lead @ raywenderlich.com Vapor expert and mobile developer who has dabbled in everything from reverse engineering to embedded development. I guess I should describe myself as a full-stack developer!

David Okun is a Developer Advocate for IBM, focusing on Swift in the cloud and other API oriented practices. He is one of the co-organizers of the Swift Cloud Workshop, a free conference which invites people to discuss uses for Swift in the cloud and everywhere other than iOS. He is also passionate about open source iOS work with AVFoundation.

Joe’s path to software development began in the fields of computational physics and systems engineering. He has been a mobile software developer on iOS and Android since 2009. He now lives in Boston and is Android Pillar Lead for raywenderlich.com.

Cesare Rocchi runs Studio Magnolia, an interactive studio that creates compelling web and mobile applications. He blogs at upbeat.it. He's building Podrover and Affiliator. You can find him on Twitter.

Server Side Swift and iOS developer. Passionate about opensource, particularly performance and security. "Doing it myself" is a norm, not the exception. Always looking to learn more.

iOS and Unity Engineer | Founder of UnityBR in Brazil | Winner of important brazilian hackathons (Mastercard and Facebook SHIFT, Ambev HackTheWorld, CodeForce Santander, Globo Hackathon, MovileHack, Itau Insights and Hackathon Iguatemi) | Attendant of international events (Vision Summit 2017 at Los Angeles-CA, MENA Transport Global Hackathon, Future Blockchain Summit at Dubai-UAE and Apple WWDC18 at California) | Traceur (parkour practitioner) | Flugelhornist | Founder of Plantae - Urban production of vegetables and the exchange of excessive produced between community members. Used technologies: Swift/Kotlin (mobile app), geolocation (matchmaking between community members), Apple/Samsung pay, Apple/Samsung health, machine learning for vision computation, AR and IoT (vegetable’s quality analysis).

Antonio is a veteran code writer who started tapping on keyboards when memory was measured in bytes instead of gigabytes, storage was an optional add-on, and the most used language was BASIC. Today he loves developing iOS apps, writing node.js backends, and he never misses a chance to learn something new. He finds Swift a very expressive language, and still thinks Objective C is great and unconventional.

Ahmed is an Android developer and an open source contributor with libraries like RichPath and Instacapture, always he wants to push the limits of the Android platform’s capabilities. You can find Ahmed on Twitter and LinkedIn.

Brian career had him working on video games, eCommerce, productivity, finance and travel apps. After spending years working as an iOS and Android developer, he sees Flutter as the next big pillar for mobile.

Professional developer with extensive knowledge of Android, Kotlin, and Java. Developing since 2015, I’ve amassed a great deal of experience and finished projects using only best practices, building high-quality products. Huge Kotlin lover and preacher, mostly focusing on Kotlin Coroutines and other low-level concurrency mechanisms. Gaming when not coding, writing about coding or speaking about coding at various events, meetups, and conferences. Dungeon master in spare time.

I am an Android developer with a masters degree in Information Technology, major in information and software engineering. I have several years of experience in making Android apps. I was a top student during my studies, awarded with Summa Cum Laude and Magna Cum Laude honorary mentions while in my free time I competed and won several national and international hackathons.

Jonathan started mobile app development with Android and later branched out to iOS. When Flutter came out, though, the switch was an easy choice. As an educator, he enjoys helping people understand complex topics. In his free time he also also enjoys learning languages, reading about microbiology and discussing deep topics. Online he usually goes by the name Suragch, which is a Mongolian word meaning "student", a reminder to never stop learning.

A forward-thinking Google certified android developer offering more than 3 years of experience building, integrating, testing, and supporting Android applications for mobile and tablet devices on the Android platform. I love learning new technologies that pick my interest. Currently exploring Flutter SDK for building cross-platform native mobile apps.

JB is a mobile expert currently based in Berlin. JB has been with OLX Group for more than three years, two years of which are from the Philippines and the rest from Berlin. Before that he worked for several years in a company that serviced clients such as NFL, HSN and other large media companies. He likes exploring new technologies related to mobile, especially those that can improve developer productivity. JB enjoys experiencing different cultures via food, language, and travel.

Lawrence is a passionate mobile developer from Singapore 🇸🇬. He has over 3 years of mobile development experience and has worked with clients from all over the world. He's a tech addict and is also an iOS and Flutter enthusiast. When he's not writing code, he enjoys time with his pet Maltese call Luke and spending time with his loved ones.

I am a software engineer at DreamOval working primarily on Android mobile development. I am learning more on front end development and I also have interests in renewable energy and IoT.

Mobile Developer passionate about creating amazing apps with great user interfaces. Founder of aldominium.com, company dedicated to create awesome video tutorials for college students.

Alex is an Android and iOS developer at (Thoughtbot)[https://thoughtbot.com/] in Boston, MA. He's a big fan of reactive programming and learning about new ways to create silky smooth Android and iOS applications. In his spare time he enjoys reading, playing video games and rewatching Star Trek: The Next Generation for the billionth time.

Kyle Jablonski is a Senior Android Engineer at Ticketmaster working on B2B Apps and SDKs. He has been working with Android since late 2010. When he is not writing code, he spends his time with his wife, snowboarding, reading books, attending events and writing articles for his own blog at www.kdotj.com.

Victoria is an Android Engineer at Buffer. The conferences she has spoken at have been an enjoyable way to connect with the technical community and exchange information with others. She was drawn to programming because of its potential to help people in a meaningful way. In her spare time, Victoria enjoys dancing and curling up with a good book.

I've been working in software for over a decade, on everything from highly scalable back-end systems to enterprise web, to mobile apps across iOS and Android. Since the first year of the App Store I've been hooked on creating awesome apps with friendly UX and have helped do so for everything from startups all the way up to fortune 500 companies. Hit me on Twitter for interesting musings or find me on http://nickbona.com

Joe’s path to software development began in the fields of computational physics and systems engineering. He has been a mobile software developer on iOS and Android since 2009. He now lives in Boston and is Android Pillar Lead for raywenderlich.com.

Ben Wicks is an Android developer at Client Resources, Inc. in Omaha and a co-organizer of Omaha's Google Developer Group. Ben was first introduced to Android development in his senior computer science class in High School. Since graduating from the University of Nebraska at Omaha in 2014, Ben has contributed to three enterprise Android applications. Ben is passionate about testable architecture and helping new mobile developers find that spark to constantly learn and grow.

Bhagat is an iOS Developer hailing from New Delhi, India. He likes to make very responsive and user friendly user experiences in his application and is keen on learning new technologies, with iOS Development, IoT and Robotics as his passions.

iOS and Android developer that enjoy being challenged and working on projects that require me to work outside my comfort and knowledge set, as continuing to learn new languages and development techniques are important to me. Working nowadays in a bank from Brazil (@SICOOB_oficial) in the iOS team. I love drink craft beer when I have a free time :]

Nam is a software engineer with a former background in IT Security. In his past life, Nam used to spend most of his time delving into the low-level inner workings of software systems and malware samples, using his reverse engineering skills. His innate curiosity eventually made him fascinated with the multidisciplinary nature of game development. Nowadays you can find him programming, reading, playing video games and indulging in Japanese media.

Morten is Technical Director at a full-service digital agency in Copenhagen, Denmark. He has a background as an iOS developer and loves tinkering with new innovative technologies. He an advocate of trying new things and taking calculated risks, and thinks you should be too!

Nishant is a Senior Android Engineer at Soundbrenner and open source enthusiast who spends his time doodling when not hacking on Android. He is a caffeine-dependent life-form and can be found either talking about android libraries or advocating that coffee is the elixir of life at community gatherings. Find him on Github, Medium and Twitter.

I'm a computer engineer who loves programming. I'm currently working as a mobile developer (iOS, Android & Xamarin Classic) at Indra. I like to try new things in my free time. My current research lines are machine learning, data analytics and raspberry pi. In my leisure time, I like to hang out with friends, travel around the world, go cycling and read about stock-market.