Developer wanted for an F-Droid app

I am looking for a developer for an F-Droid app. It is a kind of communication app that works with the Bluetooth function. The work on the development of the app should be paid. The developer should speak German and if possible have a residence in Germany. Everything else would have to be discussed in person. I would be very happy to receive tips or a personal message!

We have Briar via Bluetooth, maybe ask their devs?

Thanks a lot! I will give it a try.