Anyone knows Arduino Leonardo USB and Serial Communication?

I am seeking a good programmer to create a working prototype. Willing to pay for this work. Please only professionals.

Do you need some help in specifying your requirements accurately enough so as to ensure that only “professional” programmers get to work on your project ?

Edit:
It appears that another thread from the OP on apparently the same theme has developed to a higher level of maturity than this one. See http://forum.arduino.cc/index.php?topic=414857.0

Use of touch sensors that can be installed on a non-conductive smooth surface like Glass?