We're a small, non-profit tech startup bringing a free, world-class education to anyone, anywhere.
Millions of people in all walks of life use our free platform to learn (check out testimonials at https://www.khanacademy.org/stories). Most of you reading this are probably familiar with Sal's videos, but we also have hundreds of videos by other teachers and a huge library of interactive exercises.
A few things we're currently working on building right now:
– Mobile apps to help students learn on the go and increase access to those who might not have access to a computer 
– Improved knowledge models so we can better predict what you know and what will help you 
– Infrastructure to make the site more reliable and faster for our millions of visitors every month 
We're especially looking for dev ops engineers, but we have a handful of other positions open. Unfortunately, we've filled up our slots for this coming summer internship, but we'd happily talk to intern candidates for future terms.
Apply at https://www.khanacademy.org/careers