Android Mobile App Development Needed

I need a coder to take my Android mobile app from concept to a working build on Google Play. The core idea is already sketched out; what I am missing is the clean, maintainable code that turns those sketches into a polished APK. Here is the scope in plain terms. The job covers: • Building the entire Android front-end and necessary back-end hooks • Implementing a simple, modern UI that matches the wireframes I will supply • Making sure the project compiles in Android Studio without warnings I have not locked down every feature, so after you review the mock-ups we can decide together which extras (such as user authentication, push notifications or even in-app purchases) should make it into the first release. Your advice on the best approach—native Kotlin/Java or a cross-platform solution like Flutter—will help shape the tech stack. Deliverables will be: 1. Source code stored in a Git repository I provide 2. A signed APK (or AAB) ready for internal testing 3. Brief setup notes so another developer can build and run the project without hand-holding Quality, readability and concise documentation matter more to me than flashy animations. If you have shipped Android apps before, I will appreciate links or screenshots that prove it. Once we agree on milestones I will share all design assets and an outline of user flows so you can dive straight into coding.