Roost.com has a JS/frontend open, and I would be grateful if you applied. (Yes, you!) The site hasn't been updated yet, but here's a link with a relevant email address: http://www.roost.com/web/jobs.action

We're well-funded (Sequoia, Shasta, General Catalyst, Geolo) and we're located smack in the middle of San Francisco.

(anigbrowl and I hosted the last SF HN meetup, so you might know me from there.)