WGBH Educational Foundation - Boston, MA - <a href="http://www.wgbh.org/" >
Hiring front-end and back-end engineers as well as game makers and designers.
We're working with HTML5, CSS3, Backbone and CreateJS on the front-end; Python, Django and Node on the back-end.
WGBH is the largest producer of content for PBS. We produce many of the programs you know and love such as NOVA, Masterpiece, Antiques Roadshow, FRONTLINE, Curious George, Martha Speaks and Arthur. We make the websites, games and digital experiences for these programs as well as projects in the educational space. 
Get in touch: <a href="http://digital.wgbh.org/contact/" >
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Recent blog posts:
<a href="http://digital.wgbh.org/making-a-game-fast-dont-skimp-on-user-testing-and-the-iterative-process/" >
<a href="http://digital.wgbh.org/javascript-101-classes-and-functions/" >
Ask HN: Who is hiring? (December 2013)