CodeCombat (http://codecombat.com/about) is a programming game for learning to code. We are currently 13 people, funded by a16z and YC, in SF, aiming to level up computer science education both in and out of the classroom. Long term, we are evolving education through game-based learning. We're 100% open source and hiring for roles on both sales and engineering. See https://jobs.lever.co/codecombat for more details.