I am the lead developer and CTO at http://spotlight.fm. We work extensively with the MEAN stack (Mongo, Express, Angular, Node). Prior to that I was a Ruby on Rails consultant for my own web development studio in Madison, Wisconsin. I have been programming for over 8 years.
I help teach people in NYC at Hacker Hours, as well as mentor in programs such as 3 day startup. I have also given guest lectures at my alma mater. I like teaching people this stuff.
I am currently involved in the open-source community around NodeJs, component.js, and angular, but like I mentioned -- I am quite familiar with Rails.