Flutter APK Build for Test App

I need a freelancer to build an APK from my Flutter test app code. The code is already developed and currently housed in Android Studio. The primary purpose of the test app hasn't been specified yet, but it could potentially involve user interface, functionality, or performance testing.

Ideal skills and experience for the job:
- Proficient in Flutter and Android Studio
- Experience in building APKs from Flutter code
- Ability to work with existing code
- Understands the testing process for apps