Ask HN: Where's the best place to find Python or Rails programmers in SV?

Our company is looking for an excellent programmer who has experience with transaction/financial systems.

Background on our company:

We are microfinancing platform, like Kiva.org. We have a close, dedicated team, and noteworthy board members including congressmen, professional athletes, venture capitalists, entrepreneurs and attorneys.

We will be in San Francisco this upcoming Thursday and Friday (March 26 and 27th), and would like to meet up with potential programmers.

Is there a specific job-board or place to look?

Thanks :)