To excel as an Android app developer, you need a strong command of programming languages like Java or Kotlin. Proficiency in object-oriented programming (OOP) concepts, data structures, and algorithms is crucial. Understanding the Android SDK and tools like Android Studio is necessary for creating, debugging, and testing apps. A keen eye for UI/UX design and creating user-friendly interfaces is important. Familiarity with Android app components like activities, fragments, services, and broadcast receivers enables the creation of interactive and responsive apps. Keeping up with the latest Android platform updates and best practices ensures the ability to deliver high-quality apps that meet user expectations.