My skill set includes: - Good understanding of Core Java, (OOP, collections and multithreading) - Experience working with different versions of Android, and how to deal with different screen sizes - Familiarity with RESTful APIs to connect Android applications to back-end services (Retrofit, OkHttp, Websockets) - Experience with offline database storage (Sqlite, Realm) - Knowledge of the open-source Android ecosystem and the libraries available for common tasks. Android SDK (Fragment API, Bluetooth/BLE API, Camera API, Service API, BroadcastReceiver, Job Scheduler API) - Image processing (Picasso, Glide, Fresco) - Google Play Services (Maps/Places, Location, GCM, AdMob/DFP, Drive, Face Detection) - Firebase (Auth, Database, Notifications, Analytics, Cloud Functions, Crash Reporting etc.) - Social networks (Facebook SDK, Twitter SDK, Instagram SDK, Vkontakte SDK) - Proficient understanding of code versioning tools, such as Git - Strong knowledge of Android UI design principles, patterns, and best practices (Support libraries, Custom views, Custom themes/styles) - Ability to understand business requirements and translate them into technical requirements.