We work in the UTC -05:00 time zone, more or less. We work in a lean and agile execution model.
You should be near this time zone, or enjoy working in it at least 3-4 hours each day in it. Excellent bandwidth, and video conferencing skills are required.
Some of our stack: node.js, express, mongoDB, jQuery Mobile, EngineYard, GitHub, Mixpanel, New Relic. You should know these technologies well.
Extra credit for: R/Rserve,
This is a senior position, with exceptional pay, to join an experienced team.