MTS (November 2021 - October 2023)

Initially joined as temporary staff via an outsourcing company, but stayed for 2 years at the request of the client. I worked on MTS Connect functionality — calling and messaging via the app. Responsibilities included integration with various APIs, VoIP, and app performance optimization. Team: 3 Android developers, 1 QA, 1 manager. Stack: Java, Kotlin, RxJava, Dagger, Retrofit, Coroutines, Room, VoIP, WebRTC. Also involved in CI/CD and Gradle scripting.