An Amazon App Store Developer designs, develops, and deploys applications for Amazon's app store. They are responsible for creating functional, user-friendly apps, often optimized for Amazon devices like Kindle and Fire TV. They use programming languages such as Java or Python and adhere to Amazon's app guidelines to ensure compatibility and security. They test the app's functionality and performance, troubleshoot and fix bugs, and update the app regularly. Additionally, they monitor user feedback and app performance metrics to make necessary improvements. They may also integrate Amazon services like in-app purchasing, ads, or Alexa skills into their apps.