Android Social Networking App

I’m looking to hire a developer who can build a social-networking Android app from the ground up. I have the core concept, feature list, and some rough wireframes ready; what I need now is a functional prototype that looks polished and runs smoothly on current Android devices... (Budget: $250 - $750 USD, Jobs: Android, Android App Development, Figma, Graphic Design, Java, Kotlin, Mobile App Development, Sketch)