- Kotlin: Advanced proficiency is highly desired for Android development.
- Java: Solid understanding and practical experience are necessary.
- JNI (Java Native Interface): Required - experience integrating native code is a must.
Android Architecture:
- Deep understanding of Android Architecture principles.
- Knowledge of AOSP (Android Open Source Project).
- Solid grasp of Android Framework internals.
- Experience with Android IPC (Binder & AIDL), *especially* interactions between native code and the framework.
- Security & Permissions: (Details not provided, but included as a key skill area from your input.)