With over 10 years of experience and a comprehensive skill set in Java, Software Architecture, mobile app development (particularly Android), and backend APIs use and integration, I am confident that I can deliver the top-quality APK code that you need for your project. I fully understand your requirements of incorporating GPS location tracking, Android biometric fingerprinting, two sets of icons based on API flags, forms access and submission, and video recording and submission to your backend APIs. I have successfully executed similar complex tasks in my past projects ensuring proper permissions' handling, data transmission and authentication.
Not only am I experienced in complying with private apps for Google Play but also familiar with mechanisms to vibrate the phone and notify users within non-standard app channels. Moreover, my expertise in Full Stack development including working with different databases (SQL, MySQL, Json,), servers (MongoDB) and AWS services (S3) makes me a valuable asset as these skills align directly with your project.