Prototype LED and stepper motor and sensing, raspberry PI ARTNET DMX 512

Using a raspberry Pi to control 2 x stepper motors and channels of LED intensity. Sensots to detect cooling and adjust fan speed for cooling. Touch scrreen user interface needed. Looking for a trustworthy developer, familiar with raspberry pi and electronics work. Bonus for fat completion / ahead of schedule. To be done in stages, for example get motors working first then LEDs. Happy to discuss project. Great opportunity of ongoing development for right person. Thinking C++ would be best.