I've been working with Rails and JS for ~7 years now, at all points up and down the stack. Everything from performance work and bug fixes on existing code to bringing up a full-fledged product from design mocks.
In the past, I've worked with companies like Leap Motion, Anki, Rocket Fuel, and TaskRabbit. Before that, I had two startups of my own. In my spare time, I fly airplanes.