At CircleCI we're building Heroku for Continuous Integration and Deployment. We have traction and revenue and funding and great customers. Our customers love us, because we move quickly and provide amazing support. Everyone talks to customers a lot.
We're still a small team, so you'll have a large impact on company culture. We're highly influenced by Valve's Employee handbook, and have as flat a structure as we can.
Check out our shiny jobs page at https://circleci.com/jobs. Include samples of awesome stuff you've done.