Hello,
It seems that you need a highly skilled android developer. Well I'm an android developer who made countless apps before and is also very good with Java, Kotlin and Android Studio tools. Your app is one of the most trending apps the market has seen, as a matter of fact I just finished a project like yours. I can do this project for you quickly and deliver on time.
Do you want an app like Tinder and others?
P.S: The best way to approach your project would be to start with a small milestone. If you are happy with the initial results, we can continue working on your project until it is done.