(Should probably add I wrote this comment before realizing I could click "Continue" without having to make a selection, which then asks me to provide my own team members. I'll assume that as long as I have a team, it doesn't really matter who does the work or what their role is specified as. A "skip" link would be useful on these screens.)
I kind of wish I could see groups that are already comprised of developers that are looking to seek designers, but maybe there are other services for that.
When startups in this massive space need to start competing with each other they have already won. Recruiters have the market at the moment, but I don't think that will last.
"If you’re trying to hire full time, you’re going to have to steal somebody from another company by being the brightest bird in the forest, or you’re going to have to find somebody young with aptitude, and teach them how to be great."
In the general talent wars withing Silicon Valley, I generally had lots of luck hiring young designers (and engineers) with aptitude and helping them grow, which is generally a more pleasant experience on the hiring manager end than getting in a bidding war over high priced talent.
Add to this the number of new startups getting launched these days, and you can see why senior designers are so in demand.