This is much tougher than you think. From what I would think, the best way to do this is just to post threads on forums like BCT, as a freelancer. There are freelancer sites that accept Bitcoin already.
There are tons of programmers around, a website won't really help the amount of customers you have, would it?
My target partner would be good at Business Development/ Marketing IT stuffs or already established one who would like to outsource the jobs/projects. Proven(Experienced & professional) developers, quality work,all in one service, competitive price will be my USP.
Though I am doing freelancing jobs but now I have built confidence so want to do it in bigger scale.