STM32 Firmware Development

I need reliable, production-ready firmware for a new STM32-based device. The work covers everything from bringing up the microcontroller and configuring UART, SPI, I²C, GPIO, and interrupt routines, through to integrating the code into a clean, maintainable project structure... (Budget: $750 - $1500 USD, Jobs: Arduino, C Programming, C++ Programming, Documentation, Electronics, Embedded Systems, Microcontroller, STM32)