recoding job

Hi all,

I am looking for someone to recode my prototype Max/Msp patch to a stable -reliable- and light closed system (with a below 5% error margin). The patch now involves an arduino and two ultrasonic sensors comunicating over serial and triggering video in a specific way.
Someone once mentioned very affordable and reliable C/C++ coding companies who do this...Any reliable direct language is fine, though..
Any ideas on this, anyone?