Khan Academy — Mountain View, CA (we also love interns, and remote is a possibility)

We're a small, non-profit tech startup bringing a free, world-class education to anyone, anywhere.

Here's a testimonial we received last week:

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I am 52. I returned to school almost twenty years ago and did quite well--but I had taken care of all my math requirements 15 years before that and my degree is about as far from math as one can get. So I had not seen the inside of a math classroom for more than thirty years when I decided not long ago that I wanted to review high school math. Listening to Sal's explanations have made this so easy it is as though I had remembered all of it this whole time!

I am disabled now, and have no means to continue formal studies in much of anything, but I am now learning the calculus and linear algebra I was planning on studying when I was much younger--before my college career ran off the rails for an extended time. Thank you Sal (and the internets) for letting me remain a student! Keep this place running; I want to be able to hang around here until I am no longer able to hang around anywhere anymore.

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Every month we get hundreds of letters like this from people in all walks of life who are thankful for our free, high-quality educational content. Most of you reading this are familiar with Sal's videos, but we also have hundreds of videos by other teachers, partnerships with organizations like MoMA and the California Academy of Sciences, and a huge library of interactive exercises. Over 20 million math problems are done every week on our site.

A few things we're currently working on building right now:

– The next version of our personalized learning dashboard [1] to make the UI more consistent across subjects and to help people learn better

– Improved knowledge models so we can better know what you know and don't know [2]

– Infrastructure improvements to make the site more reliable and faster for our millions of visitors every month [3]

– Better tools for our content creators to allow them to make thousands of engaging, interactive exercise problems without knowing how to code [4]

– A major revision to our iOS app to let students practice skills on the go (or in a classroom with iPads!)

You'll be part of a small team working alongside both "celebrity" devs (like jQuery creator John Resig and Google's first employee Craig Silverstein) and many more who you haven't heard of but who are also really awesome.

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We're especially looking for new product designers and mobile devs but we have a handful of other positions open -- take a look and see if anything suits you.

Apply at https://www.khanacademy.org/careers and mention that you're coming from HN. Feel free to ask me here if you have questions about applying or about KA in general. Unfortunately we can't sponsor visas right now unless you're from Canada, Australia, or Mexico.

[1]: https://www.khanacademy.org/about/blog/post/58354379257/intr...

[2]: http://mattfaus.com/2014/05/improving-khan-academys-student-...

[3]: http://www.alangpierce.com/blog/2014/07/07/bigbingo-khan-aca...

[4]: https://github.com/Khan/perseus