Ruby on Rails Android iOS( Obj-C, Swift 2/3) I`m a expert Ruby on Rails / Android / iOS developer with many year of experience. For Android, I have 8+ of experience. For iOS, I have 5+ of experience, especially 3 years of experience for Swift programming. For Ruby on Rails, I have 4+ of experience. I have a bulk of experiences, strong skills and knowledge in Web/ Mobile app development. Stack which I work with includes * backend: Ruby on Rails, PostgreSQL, MySQL, SQL Server, MongoDB, Redis, Elasticsearch, Rspec, Capybara, Heroku, AWS * frontend: AngularJS, CoffeeScript, WebSocket, HTML5, CSS3, SASS, JQuery, Bootstrap My Ruby on Rails/ Web development experiences: - Ruby/Ruby on Rails - SQL DB`s: PostgreSQL, MySQL, Oracle - NoSQL, in-memory, key-value stores: MongoDB, DynamoDB, Redis - HAML, SASS, jQuery, Twitter Bootstrap - JS MVC: Backbone.js, Angular.js, React.js - TDD/BDD: RSpec, Capybara, Cucumber, Selenium - API: Facebook, Twitter, Amazon, Google Maps etc. - EC2, DigitalOcean, OpenShift, Heroku, - git, svn - various gems and libraries My Mobile development experiences: - Augmented reality application - Wikitude Geo Location application - Google Map, GPS based application - Video/Voice Chat application - Custom Keyboard application - Social networking apps (tinder style dating apps, twitter chatting apps). - Educational apps. - Phone/Video sharing apps. (instagram) - Reservation apps. (Hotel Bookings app, Taxi booking app) - Travel apps. - Health/Fitness apps. - Utility apps. Expertized Skills: -Native: Android, IOS, C/C++ -Web service: XML/JSON, REST/SOAP -Chat & Messaging Engine: quickblox, XMPP, Jabber, OpenFire, OpenTok on WebRTC, Ejabberd, Erlang, Zopim -Video/audio/image processing: OpenCV, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation -Video/audio streaming, codec: Wowza, Red5, H.323, MPEG-4 -Social Network: Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo, Google+ -Place Service: Google Map, Foursquare, Yelp, Geolocation, GPS -Finance: In-App Purchase, RPG server -Online Payment Gateway: PayPal, Authorize.net, Stripe, Venmo, Braintree, Payleap Programming Languages: - Ruby on Rails - PHP, HTML5, JavaScript, CSS - Java - Obj-C - Swift 2, Swift 3 - C/C++ Database Administration: - MySQL, PostgreSQL, MongoDB, SQLite3 Development Tools: - Sublime Text - Rubymine - Android Studio 2.2.2 - Xcode 8.1 - Eclipse - Visual Studio 2015 Other Tools: - PhotoShop - 3dMAX - Unity 3D ... ©