i am looking for an android developer with proven skills ( i must see what you have developed before) who can develop complex android apps. Your skill set should include UI, graphics, and Flutter and firebase skills, and should have very strong encryption and data protection skills. You must know how to deploy to android store, how to do in app upgrades etc. You should know how to test everything properly so that it runs on all common android phones. This is not a kitchen project or a kindergarten project, so not for beginners or for those who click without even bothering to read the description. I have several projects, but will start with something simple.