Propeller (<a href="http://usepropeller.com/" >http://usepropeller.com/</a>) - San Francisco, CA. Full time or interns.
We're building the next generation of native mobile app creation. We dabble in iOS (RubyMotion/Objective-C), Android (Java), JavaScript (Backbone), and Rails, and are solving Really Tough problems across the board.
We also do tons of open source work (<a href="https://github.com/usepropeller" >https://github.com/usepropeller</a>), and we're anxious to share even more of the tech we build with the community.
If what we're up to sounds interesting and you want to know more, shoot me a message at clay at usepropeller.com