C++ programming help wanted

Hi Guys I have not visited this site for some time. I have been off developing 3 mowing robots all different sizes. Largest is 50 inch cut. We have written all the code from scratch and also use an Arduino Due and Raspberry pi. Most of the code is written for the working prototype however I need some more help to develop a few more modules and improve on others. We also use a state machine. The chassis are rear wheel differential drive and we use RTK gps and a compass. Also working on rtk gps heading device so can ditch the compass.
I can pay a little for the work and it can be managed through an online broker. This is a really exciting project project. Please let me know if you can help us mover ahead further.
regards
Max
 
Oben