Tracker EC200 and stm32

I am looking for assistance with firmware development of a tracker system utilizing an EC200 and STM32 processor. The functionalities that I need include GPS tracking, real-time location updates, and integration of additional sensors. I have already chosen to utilize an STM32 processor for this project. I am not looking for any additional outputs, such as LEDs or an LCD display. Therefore, I am looking for a freelancer to support me in developing this tracker system with the required features and processor.