Learning resources,
created by developers just like you!

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 100 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.

Writer • Illustrator • Developer • Speaker Tammy Coron is an independent creative professional and the host of Roundabout: Creative Chaos. She's also the co-founder of Day Of The Indie, the organizer behind Indie DevStock, and the founder of Just Write Code. For more information, visit TammyCoron.com.

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 a strange mashup of developer, writer and trainer. By day you'll find him recording videos for Razeware, writing tutorials, attending conferences and generally being a good guy. By night he's likely to be out entertaining people, armed with his trombone and killer dance moves. He'd like it very much if you were to follow him on twitter at @iwantmyrealname, seek him out as sammyd on GitHub, or check his personal site iwantmyreal.name.

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, currently focusing on Mobile Development. 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.

Computer Science student at The University of Manchester

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.

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

With a background in biotechnology, Fuad began his career developing assays and cutting edge technologies around HIV research. From there he shifted into the bioinformatics arena, where he developed innovative information systems in Perl. He started playing with the Flash platform around the time Flash 4 was released, and later developed the flash interface for the Flight Information Display System (FIDS) that you see at pretty much every major airport around the world today. Fuad loves delving into new technologies and pushing technologies in novel directions. Currently he is focused on providing mobile strategy & development for the Health & Fitness markets. He is an iOS developer, teaches Android & Kotlin college courses, and is currently writing The Kotlin Book http://thekotlinbook.com. 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.

Just a 21 year old Croatian student who's been working with Java and Android for more than two years. Loving software, technology and all its hidden gems still left to be explored. Passionately looking for new challenges to overcome in this ever-changing world of software development. Perfecting Java, but hugely focusing on Kotlin over the past 12 months. Learning Node.js backend in spare time, and coming up with new solutions to everyday problems with the help of an amazing team. Also a co-founder of the Kotlin User Group Croatia, and a regular Android talks speaker here at Osijek. Often writing articles about various crazy ideas made in Android and general programming concepts and problems.

I'm a software engineer, passionate about mobile development. I'm an Android and iOS developer. When I'm not coding I like to play football, watch movies (I'm a Star Wars fan!), read sci-fi novels and play video games. I live 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.

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

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.

threddies co-founder; Android dev; BJCP beer judge/geek; All around sound, light, electronics & chemistry tinkerer. I blog about my Transmutable Explorations and currently write Android applications for AWeber.

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 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.

Software Engineer in Android and Web. Known programming languages are Java, Kotlin, Swift, Javascript, and Ruby. From Cambodia and living in Singapore.

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.

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.

Odie recently completed an undergraduate degree in Software Engineering and is a postgrad student at the University of East Anglia, Norwich, UK. Always working on a side project at any given time, he loves to write code and enjoys bringing his ideas to life. When not coding, he\'s probably watching something (film, TV show or anime) and is full of movie/pop culture references, but sometimes he plays guitar.

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.

An enthusiastic Android Developer, who also teaches as a way to keep on learning!

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.

Sam is a strange mashup of developer, writer and trainer. By day you'll find him recording videos for Razeware, writing tutorials, attending conferences and generally being a good guy. By night he's likely to be out entertaining people, armed with his trombone and killer dance moves. He'd like it very much if you were to follow him on twitter at @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 was drawn to programming because of its potential to help people in a meaningful way. She is currently 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. 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

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.

Collin Stuart is an Android and iOS developer with a focus on encryption, reverse engineering and application hardening. He has been hacking and developing apps since since 2009.

Pablo is the founder and CTO of a Technology Development company in Madrid. We focus on web and mobile app development. I come from an Art Director´s background, although I am currently an expert in iOS and Android programming. I am the Main Professor of the iOS and Android Mobile Development Masters Degree at a well-known technology school in Madrid (CICE). Finally, I am also specializing in Python and Artificial Intelligence, as I believe it is a fascinating​ field for the nearby future.

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 Palm Beach Florida but works with clients all across the US including many major brands. During his 30 year career, Eric has been able to work 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.

Adam Rush is a passionate iOS developer with over 6 years 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.

When Tommy is not doing work, he likes to lose in Super Smash Bros. You can reach out to him through email.

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.

Andrea Lepley is an author, editor, artist and twin. She edits written and video tutorials for RayWenderlich.com, and sells fun, unique coasters for awesome people at YayDelicious.com. She\'s also written a couple novels. She wishes she had spare time, so she could spend it eating cheese and writing stories about cats.

Bradley C. Phillips, an editor, splits his time between New York City and the beautiful northwestern Catskill Mountains. He was the first editor to come aboard raywenderlich.com, and he makes sure you\'ve got the clearest, most engaging material available, whether you\'re reading the site\'s books or tutorials. He has worked as a journalist and an EMT and previously directed the intelligence department of a New York investigative firm. Right now, Bradley is a pre-medical student and edits on a freelance basis. Somehow he finds time to pursue his own projects, which include renovating a house and driving a monster truck. Contact him if you need a skilled and experienced editor for your blog, books or anything else.

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.

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, digital designer/illustrator from Cherkasy, Ukraine. Worked at design studios, magazines as designer and art-director. Now working as freelance designer. Bachelor degree as Engineer. Love kids (have 2), cats, art, Magic the Gathering, also ambient and metal of all kinds.Warhammer 40k books fan.

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.

iOS Team Lead 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 6 years 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 17 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 October Sky. He also enjoys console gaming and playing around with Linux.

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 →

Brian lives in Ashland, Oregon, and is Mobile Team Lead with Beezwax in Oakland, California. Brian has mastered a wide range of technologies, from deep data to frontend UI and UX tools and approaches. Currently, he's very happily obsessed with all things Swift. When not coding, Brian can be found exploring the mountains and coast of southern Oregon, tending bamboo groves, working with wood, or hanging with a craft brew in hand.

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+

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

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.

Eric is an iOS Software Engineer in San Francisco. After being acquired by Capital One, he likes to spend his days at work hanging out with Samuel L. Jackson and asking everyone "What's in your wallet?". Lately his main focus has been with Swift and gaining a deeper knowledge of programming languages at the core. Outside iOS, his interests are tinkering with hardware (Raspberry Pi and Arduino), gaming, exploring San Francisco, and regretting endless Netflix marathons. You can find Eric on Twitter or his personal site.

Evan is a sophomore at Rice University studying computer science and mathematics. When he is taking a break from schoolwork, he is working on his independent app business, learning about random things on Wikipedia, or trying to get into an exercise routine. You can find him on Twitter or on his website.

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 an iOS guy from Minneapolis. Currently a Lead 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.

Essan is a software engineer with a business background. A type-in program on a Commodore 64 was his first experience with computers at an early age. Coming from the world of enterprise web-based software where he co-founded his first company in 2002, iOS has become his platform of choice in the past few years. His first top-selling app is found on the list of many daily stock traders and is featured by Apple. Essan currently leads the mobile division of LimeSpot, a start-up based in British Columbia, Canada. You can find him on Twitter.

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.

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.

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.

Hanley Hansen is a web and mobile application engineer with a keen interest in all things data. He is currently employed at Warner Bros. Digital Labs as a Senior Software Engineer. Outside of WBDL he is the lead software architect for Hansen Info Tech and the author of blackbytelounge.com. When he's not building software, Hanley enjoys playing the piano and the saxophone, binge watching TV shows and movies and playing sports. His other interests include physics, math, data science and video games. He is also an avid reader and teacher of the Bible.

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.

Jairo is an indie iOS developer from the Caribbean. He founded HalfMagnet on 2010, a small studio releasing iOS Apps and Games. When Jairo is not learning how to be a ninja developer, he\'s teaching General Physics and Topography. He also loves memes and pop culture.

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.

James is an iOS developer at Automattic, where he primarily works on the WordPress app for iOS. He started writing code in the early 90s on his family\'s BBC B, and hasn\'t stopped. You can find him on Twitter, his personal website, and Stack Overflow.

Principal Engineer at Major League Baseball, Author of Beginning Swift Games Development for iOS and many more books, Husband, and Father of two awesome girls.

Jacob is an indie game developer and runs the Indie Ambitions blog. Check out his latest app - Factor Samurai! You can find him on Twitter.

Joshua Greene is a passionate software developer and loves creating elegant apps. When he's not slinging code, he enjoys martial arts, Netflix and spending time with his wonderful wife and daughter. You can reach him by email or Twitter.

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

Kevin is a digital media pro who has done tours of duty with MLB.com, the Grammy Awards, FoxSports.com and more. Nowadays, he is providing digital consulting services and building websites and apps with KevCol Labs LLC.

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.

Luke is currently an iOS developer at Fyusion. Sometimes he tweets and blogs. He basically speaks in references so if you catch one be sure to let him know that you too are a man of culture.

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

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.

Michael is an Independent Software Developer with over 30 years of programming experience. Learning BASIC on a Commodore 64 way back in 1984, he's been hooked on coding ever since. He enjoys creating simulations and games for all Apple platforms.

Morten is a twenty-something Software Development student and iOS developer from Copenhagen, Denmark. He was first introduced to iOS development around the launch of Swift and has been in love with it ever since. He strives to learn something new about iOS development every single day and he has at least one side project running at all times. When Morten isn\'t developing apps and studying, and his adorable cat isn\'t riding on his shoulders, he spends his time working out, reading interesting books, and diving into the world of biohacking. You can find Morten on Twitter, Facebook and LinkedIn.

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.

I'm a Swift developer who likes to work on cool iOS apps, nerd out about programming, learn new things and then blog about it. Mostly, though, I just cause SourceKit crashes. I also have a chubby cat. You can read my blog here.

Michael Gazdich is a Pittsburgh native, a Virginia Tech alum, and currently living in San Francisco as an iOS developer at Instagram working on Direct Messaging. 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.

Mikael is a Software Engineer on the Experimentation Platform Team at Facebook in Menlo Park.

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

Owen is a software engineer with a strong background in mechanical and electrical design. He has 17+ 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.

Product innovation + iOS engineer @blackpills, philosophy graduate, minimalist.

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.

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

I am a software developer in Alexandria, VA. In my day job, I am the iOS developer for Homesnap, a really great real estate discovery app. I also have two apps in the iOS app store: Metrownome: a coaching tool for rowing, and Preplist-K: a tool to help chefs create work lists for their employees. When I'm not writing software, I spend time rowing on the Potomac river or exploring new restaurants and cooking great food.

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.

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 on The Bible App. 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.

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.

Shai is the iOS Lead @ RBI Digital, where he's responsible for the Tim Hortons iOS app. 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 Facebook in their London office. When he\'s not hacking up new ideas you\'ll find him on two wheels, spinning along the tarmac or bouncing down the hills :)

I am the iOS technical lead at Gett, a taxi hailing app offering taxi and black car services at a click of a button in New-York, Great-Britain, Russia and Israel. I've been developing for iOS since 2012 and have recently set my eyes on game development with Sprite Kit. I enjoy exploring new technologies and always look forward to learning new things.

Sanket is a design and product-focused engineer who likes to solve real user problems with simple products. He is based out of San Francisco and is a founding member at Superhuman. You can reach Sanket on Twitter or LinkedIn.

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.

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

iOS/Android developer at Upside Travel building a revolutionary product that will rock the business travel world. 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.

A skilled iOS engineer with solid professional experience of building and shipping customers worldwide. Passionate about software architecture and code complexity management, pixel-perfect UIs and well-thought UX, fluid animations and intuitive touch interactions. Speak Objective-C, Swift as second languages, use Xcode more often than a browser and go to sleep later just to watch the WWDC keynotes. Ever-curious. Always learning.

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.

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.

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 was a photographer at RWDevCon 2018. She is a recruiter for raywenderlich.com. She also owns her own tech business, Laptopcat Corp., LLC. Annette just completed her first 5K walk! Most of it was through 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 an iOS guy from Minneapolis. Currently a Lead 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 a twenty-something Software Development student and iOS developer from Copenhagen, Denmark. He was first introduced to iOS development around the launch of Swift and has been in love with it ever since. He strives to learn something new about iOS development every single day and he has at least one side project running at all times. When Morten isn\'t developing apps and studying, and his adorable cat isn\'t riding on his shoulders, he spends his time working out, reading interesting books, and diving into the world of biohacking. You can find Morten on Twitter, Facebook and LinkedIn.

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.

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.

Microsoft MVP for work in Unity 3D 100K+ hits on my course for creating an RTS in Unity. Published in magazines, multiple game development books Presented at Unite, THAT Conference and others. Always working on HoloLens, VR or other 3D systems.

Derek is an iOS developer?

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.

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 developer and Instructor for Facebook. He has been developing iOS apps and working as an Instructor for over 4 years.

Jack is the lead mobile developer at ModiFace. He has built dozens of iOS apps and enjoys it very much. Outside of work, Jack enjoys coding on the beach, coding by the pool, and sometimes just having a quick code in the park. You can find Jack on LinkedIn or Twitter.

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 Developer at Yelp. He enjoys teaching and was the original founder of the of the NYC iOS Study Group. He's worked for companies as large as The New York Times, and as small as GateGuru, a 6 person startup. 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.

Server Side Swift developer. Active in Vapor and OpenKitten, enthusiastic about MongoDB and optimisations.

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.

Prior to software development, Patrick played Chess professionally. Chess sparked his deep interest in pattern recognition & artificial Intelligence. He went on to study Bioinformatics & Computer Science. During his studies, he worked with leading scientists to build novel analysis software for biomedical research. He then founded, Expat Inc, to find ways to make such innovations available at an affordable price to all. He now holds several granted & pending machine learning patents. They leverage them to power, Stock Market Sensei, a transparent daily stock analysis platform in use by thousands. His mobile development experience has primarily been in building apps from scratch to revenue.

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.

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.

Ryan is a Software Engineer at Facebook. He is a passionate open source contributor where he builds UI controls and frameworks for others to use and learn from. In his spare time he enjoys flying planes as a private pilot. You can reach Ryan on Twitter or email.

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 has been developing iOS apps since 2010, using Swift since the day it was announced, and RxSwift since before version 1. He's authored several video courses, tutorials, and articles on iOS app development, presented at numerous conferences, meetups, and online events, and most recently co-authored RxSwift - Reactive Programming with Swift. Scott is a veteran of the United States Marine Corps, and he lives in St. Louis. You can reach Scott on LinkedIn or Twitter, or by email, and check out his open-source work on GitHub.

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.

When Tommy is not doing work, he likes to lose in Super Smash Bros. You can reach out to him through email.

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.

I am a Flash programmer turned Mobile developer. I started mobile development with Unity3D (when onGUI function is the only way to create text & buttons), learning C# and then branched out to working on iOS, starting with Obj-C and later on, Swift. I am a self-taught programmer who love the process of learning, driven by ideas, I like to have mini side projects to work on. I look forward to contribute interesting tutorials for the raywenderlich.com Unity Team!

Anthony is a hardcore gamer and the only thing he loves more than playing games is making them with Unity. He has contributed to 2 published games on both iOS and Android, and several apps which have seen use by many millions of users. Anthony is a Senior Consultant for Infusion (a consulting firm that helps build enterprise apps). In his little spare time Anthony is developing a hardcore tactical RPG.

Brian has been tinkering with computers since writing basic programs on IBM PC (with Two! floppy drives). He has done web, database, C++, ruby, and now iOS development. Brian has spent the last few years as a computer science teacher and trainer. You can reach him by email or on Twitter.

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 & XNA and now 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 seasoned coder with 20+ years of experience. He has fond memories of his childhood and his Commodore 64; more recently he started adding more good memories of life with all his iOS devices. At day, he fights for survival in the corporate jungle of Johannesburg, South Africa. At night he fights demons, dragons and angry little potty-mouth kids online. For relaxation he codes. You can find Chris on Twitter. Forever Coder, Artist, Musician, Gamer and 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.

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.

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.

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.

Derek is an iOS developer?

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.

David has a passion for continuous improvement. His ongoing goal is to bring practice improvements to teams large and small. When he's not developing custom ERP systems and supporting IOS apps, he plays drums and bass and enjoys travelling with his wife and daughters.

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!

- Apple Engineer - M.Sc. Electrical and Computer Engineering. - TheGrint's Lead iOS Developer. - Loves < 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.

Luke is currently an iOS developer at Fyusion. Sometimes he tweets and blogs. He basically speaks in references so if you catch one be sure to let him know that you too are a man of culture.

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.

Michael is an Independent Software Developer with over 30 years of programming experience. Learning BASIC on a Commodore 64 way back in 1984, he's been hooked on coding ever since. He enjoys creating simulations and games for all Apple platforms.

Prior to software development, Patrick played Chess professionally. Chess sparked his deep interest in pattern recognition & artificial Intelligence. He went on to study Bioinformatics & Computer Science. During his studies, he worked with leading scientists to build novel analysis software for biomedical research. He then founded, Expat Inc, to find ways to make such innovations available at an affordable price to all. He now holds several granted & pending machine learning patents. They leverage them to power, Stock Market Sensei, a transparent daily stock analysis platform in use by thousands. His mobile development experience has primarily been in building apps from scratch to revenue.

Ray is part of a great team - the raywenderlich.com team, a group of over 100 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 a strange mashup of developer, writer and trainer. By day you'll find him recording videos for Razeware, writing tutorials, attending conferences and generally being a good guy. By night he's likely to be out entertaining people, armed with his trombone and killer dance moves. He'd like it very much if you were to follow him on twitter at @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 has been developing iOS apps since 2010, using Swift since the day it was announced, and RxSwift since before version 1. He's authored several video courses, tutorials, and articles on iOS app development, presented at numerous conferences, meetups, and online events, and most recently co-authored RxSwift - Reactive Programming with Swift. Scott is a veteran of the United States Marine Corps, and he lives in St. Louis. You can reach Scott on LinkedIn or Twitter, or by email, and check out his open-source work on GitHub.

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.