I need a React Native Expert to develop a boilerplate app for bluetooth tracker device

I need a React Native Expert to develop a boilerplate app for this product [login to view URL] It's a Bluetooth tracker device. It will be supplied by me. I expect only a basic feature such as the ability to communicate with the device when it's in range even the app is in the background. UI is not a must. I just expect the functionalities to work. Functionalities include getting the Bluetooth's meta info and sending instruction/message to and from the device. I am a novice developer. Thus I will develop the app once you created the boilerplate. Can you give me the approximate time and cost for the project? Hope we can have a good agreement together Agreed terms: Screen to identify and Pair trackers, manage, name, delete Screen to send a command to trigger sound in the tracker Respond to trackers click (ring a song) Registration feature The mobile app is created in React Native with dependencies set for both iOS and Android Server side will be written in node.js The app will work in the background I will get the source code for both app and server code after completing payment.