I have: Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes Proficient in working with RESTful APIs to connect Android applications to back-end services Strong knowledge of Android UI design principles, patterns, and best practices Experience with offline storage, threading, and performance tuning Ability to design applications around natural user interfaces, such as “touch” Familiarity with the use of additional sensors, such as gyroscopes and accelerometers Knowledge of the open-source Android ecosystem and the libraries available for common tasks Strong knowledge Firebase APIs and push notifications Understanding of Google’s Android design principles and interface guidelines Proficient understanding of code versioning tools, such as Git. Proficient in working with MVI, MVP, MVVM architecture patterns.