Konstantin Epifanov Email and Phone Number

Developed features:- Porting an Android TV app to Samsung TV (Tizen OS support)- Live streaming (RTMP, one-to-many)- Community feed UGC video player and performance optimization- Sign-in links support, auth flow redesign- Modifications to the video_player plugin

Led the development and maintenance of Android and IOS applications for Sensorium XR.Designed application architecture using Clean Architecture with Bloc/Cubit, GetIt, and Freezed.Led and mentored 4 Flutter developers.Conducted 1:1 meetings, code reviews, UI/UX quality validation, and teamwork process optimization.Completed total refactoring and redesign of the application.Participated in the design of the Flutter-Unity communication protocol using Protobuf.Implemented animated rose chart widget using custom paint on canvas.

Designed application architecture using Clean Architecture with Bloc/Cubit, GetIt, and Freezed.Implemented Store, Customization, Virtual Space, Dance, and Navigation Hub modules.Implemented Text and Voice Chat modules, chat with openai using Google Speech-To-TextImplemented complicated UI with Unity integrated into Flutter.Integrated services: Google STT, Spotify, Sentry, Kochava, Amplitude, AppsFlyer.

Developed and maintained Android and IOS applications for the streaming platform Webka.Adapted native solutions for Flutter, and wrote plugins for ExoPlayer/AVPlayer with PlatformView.Worked a lot with WebRTC and HLS.Developed application architecture using Clean Architecture, BLoC, and GetIt.Implemented complicated UI and animations.Gained expertise with RX and streams.Provided support for the product after release, including bug fixing and code refactoring.

Supported existing projects and implemented new functionality.Designed architecture and worked in a project team.Developed a game client-server application about binary options bets with complex UI and non-trivial design solutions.Developed two client applications for payment systems.Developed a client application for an office landscaping service: https://github.com/epifanov-lab/GreenPremium.Participated in the Urban Tech Challenge 2018 hackathon, developed a solution for the Main Control Department of Moscow.Worked with geolocation services: Google, Yandex, Here.Worked with Host Cards Emulation and NFC.