MVVM, ViewModel, Memory Management, JUnit, Sqlite, Selenium, multithreading, Espresso, Kotlin, Sdlc, Git, Mockito, Retrofit, Dagger, LiveData, Coroutines, Clean Architecture, Hilt, Jetpack Compose, Room, modular design, Server-Driven UI, Playwright, Navigation Component, Flow, OkHttp, GraphQL APIs, Gitflow, performance optimization, Apollo