Android Things Developer for Vending Machine [IoT]

Looking for a Developer with prior experience with Android Things. We need a developer who can work with Raspberry Pi 3b+ and have the necessary knowledge of H/W related connections as required to develop a fully functioning application for the machine. - The IOT device will have a 32" touch display. - The Vending Machine will have 8 Different motors controlled separately so as to mix the contents in the desired ratio as per user requirement. - Need to have knowledge or experience with FireBase (using this for our website, mobile & Vending Machine) - There will be interactions or input from RFID Cards, QR Code Scanning for user authentication. - Work with different sensors to provide real-time data for the Admin-Dashboard. (Notifies the user in case of refill, level of raw material in container, timeline history, and provide statistics of the machine) - App should follow the latest Design Guidelines. Minimal & professional looks are welcomed. - Payment Integration with Google Tez & Paytm. [UPI] Feel free to contact in case of any enquiry. Looking to preferably hire a full time Developer.