Chat Support using firebase

I am looking for an experienced developer that can help me integrate a chat support system into my mobile app, with multimedia sharing functionality and support for multiple languages. The chat should be built using Firebase, as I need it to be highly secure and reliable. The developer should have experience in UI/UX and should be able to produce a polished user interface that is intuitive and easy to use. I look forward to working with a qualified engineer to get this project complete.