Simple pcb and firmware development- long term cooperator

======MCU, IMU, LED======== I am developing a consumer product for hunters and am looking for a developer capable of handling the entire process, from PCB and firmware development to manufacturing. The product's functionality is straightforward. It requires integration with an IMU (Inertial Measurement Unit). The system remains in an idle state by default. However, the LED must turn on if the acceleration value exceeds a specific threshold. Pressing an externally mounted button turns off the LED and returns the system to the idle state. An ultra-small PCB with a width of less than 4mm is required. Manufacturing will be handled via JLCPCB. The PCBs must be delivered with the firmware already installed. Please include your recommendations for the IC components to be used in this project in your proposal. I hope to work together by next version