Other technologies Broader tech stack of this engineer Google Services (Map, Places, Cloud Messaging, Auth, etc.), Facebook SDK, Firebase services Programming languages Java, Kotlin, Dart RDBMS SQLite, Room, Realm Libraries, frameworks, CMS REST API, Jetpack (ViewModel, LiveData, Lifecycles, Room, etc.), Data Binding, Dagger2, RxJava, EventBus, Retrofit, Glide.