Quora in Palo Alto is hiring software engineers and product designers.
We're working on a high quality question and answer site.
Some of the tools we are using include Python, Pylons, nginx, memcached, Thrift, and git. We're using continuous deployment and EC2, so all code you write will go live to production within minutes no matter what time it is.
You can see more about our team so far here: http://www.quora.com/about/team