- Worked on an application for conducting lessons in a large classes.- Implemented the transition of the product from the MVP stage to a stable working version.- Established the application's architecture and aligned the existing codebase with SOLID, KISS, DRY principles.- Created project documentation, described the code style, code review guidelines, and refactoring plan.- Implemented complex logic for working with websockets, including features like online surveys, tests, achievements, and chat functionality.- Implemented integration with video SDK (Zoom SDK, VK-Calls) and handled device processing, participant states, video, and audio (WebRTC, ffmpeg, MediaCodec).- Implemented the ability to switch between two SDK's within a single session.

Tinkoff:- Implemented separation of a part of the common codebase into feature modules- Implemented migration of the old codebase from Java to Kotlin- Implemented complex custom views, view groups in separate modules- Implemented feature toggling to hide functionalityUbRIR:- Implemented new credit scenarios and improved existing ones.- Refactored legacy code on screens with multiple states.- Implemented Server-driven UI.- Implemented sending events to Firebase and Yandex Appmetrika.- Improved notification and deep linking functionality.- Conducted code reviews, tasks decomposition and estimation.- Researched and fixed platform-specific bugs on production (occurring on older versions of Android, on Huawei devices without Google services).- Release build (working with CI/CD, merging feature branches, bug fixes), uploading releases to Google Play and App Gallery.

Developing mobile applications and games, including complex commercial projects, team development.