BLE TPMS Firmware & App

I need end-to-end development for a Tire Pressure Monitoring System that reads pressure and temperature from wireless sensors over BLE, processes the data on an embedded controller, and mirrors everything in a cross-platform mobile app... (Budget: $100 - $20000 USD, Jobs: Android, Bluetooth Low Energy (BLE), Embedded Systems, Flutter, iPhone, Mobile App Development, Mobile Development, React Native)