I am an open-source and open-education enthusiast, one of the beginning contributor of Chinese Wikipedia. Also I initiate a free education project - Wahlque.org in 2011.
As an engineer, I have experience on Java for almost 10 years, and in recent 3 years I practice real projects on Node.js, CoffeeScript, Python and Clojure, also I am programmer with an intermediate level skill of Ruby and Haskell. You can check with my projects on GitHub 1, 2, 3, 4.
Right now I am leading a small machine-learning team in Guokr.