A Google SDK developer utilizes Google's Software Development Kits (SDKs) to design, develop, and debug applications for various Google platforms such as Android, Google Cloud, Google Maps, etc. They write code, implement APIs, and integrate user interfaces. They also test and debug their applications, ensuring smooth and reliable performance. Debugging includes identifying and fixing bugs, as well as improving application speed and performance. They also need to stay updated with the latest SDK versions and features. Their work is key to creating seamless, user-friendly applications powered by Google's platforms and services.