Retrofit, Android SDK, Kotlin, Xml, Core Java, REST, Json, Threads, Fragments, Intent, Android Activity, Android mobile applications development, Services, Android Debugger, Constraint layouts, Broadcast Receiver, UI components, Android Studio IDE, OkHttp, Web Service Integration, Android Architecture Framework, Handlers, widgets, Action Bars, Content Provider

Android Studio, Solid Principles, Kotlin, Android development, Android SDK, clean architecture, mobile performance optimization techniques, Jetpack Compose