Developing a #1 App Store VPN product that is used by millions of users. As a key developer, I take ownership of several crucial app features, develop new features, and improve app stability.- successfully migrated over 80% of ObjC features to Swift- modularized app structure ( via Swift Packet Manager )- doubled AdMob show rate via full ads refactoring and several A/B tests which led to significant revenue growth- integrated CI/CD for a team using Xcode Cloud- developed several VPN domain-specific features - developed remote customizable paywalls via Adapty & Firebase- improved app crash-free rate to 99.9%- added tech documentation for existing and new features- established and implemented iOS team development processes

I worked on a white-label VPN iOS app that served millions of users and was a key developer in several features and areas of the app.

Worked on telecommunication iOS software product that specializes in providing video chat and voice calls.#swift #obj-c#voip #sip #rest #legacy

Worked as a consultant, and provided architectural solutions for big legacy iOS e-commerce projects.

- developed social network application from scratch using Swift for Microsoft.

As a freelance developer, I've taken a few iOS projects from idea to the App Store

Full-time job, worked in outsourcing & outstaffing for US clientsPlatform: iOS Projects duration: 3-12month,Tasks: prototyping, support & development of iOS applicationsTeam sizes: 1-8Roles: Developer, Senior Developer, Team Leader.

Developed several R&D MVPs in the healthcare field#OpenCV, #BTLE, fitness device, real-time video processing, REST.

Developed multiplayer games as a game developer for both iOS and Windows platforms.Tech stack: iOS, OpenGL, C++, Objective-CMost noticeable projects:2011 Six-Guns [networking, multiplayer development]2010 Fishing Kings [implementing in-game shop, integrating f2p model into the existing game]2011 Zombiewood [networking, multiplayer development]