[rch]

I find linkedin to be relatively useless in this context. I need to be able to supply scores and weights to the various things I'm looking for, and to submitted job descriptions. I'd like to get at what candidates are looking for, not just what they have done.

It makes sense to list Java and C# in a profile, but I'd give a bump to Python and Haskell opportunities, personally (others might do the opposite).

Actual hiring is driven more by accomplishments anyway.

[vonmoltke]

What you are describing sounds more like OKCupid for engineering jobs.

[rch]

Maybe e-harmony, since it'd be double blind model-driven matching, but with near real time feedback while one is refining a set of preference parameters.