Knowledge of object-oriented programming
Rock-solid at working with third-party dependencies and debugging dependency conflicts
Familiarities with native build tools, like XCode, Android Studio, and Gradle
Understanding of REST APIs, the document request model, and offline storage
Experience with automated testing suites
Experience with offline storage, performance tuning, etc.
Experience in developing photos, camera, locations, calendar, scheduler, events, and task management apps.
Familiarity with cloud message APIs and push notification.
Understanding of Apple's design principles and interface guidelines.
Proficient understanding of code versioning tools such as Git, Mercurial, and SVN, etc.