J1939 CAN Edge hardware and Firmware Development

I have a CAN-based hardware concept for trucks and excavators that still needs an expert eye and solid firmware. The board carries a CAN transceiver plus an as-yet-undecided microcontroller; your first... (Budget: $1500 - $3000 USD, Jobs: Arduino, Bluetooth, CAN Bus, Electronics, Embedded Systems, Microcontroller, PCB Layout, STM32)