An Android Developer is a software engineer who specializes in creating applications for the Android operating system, which is widely used on smartphones and tablets. They use programming languages like Java and Kotlin to build user-friendly apps that can perform various functions, from games to productivity tools. To succeed, an Android Developer must understand the Android SDK (Software Development Kit) and various development tools, such as Android Studio. They also need to stay updated on the latest trends and updates in the Android ecosystem to ensure their apps are efficient and compatible with new devices.