My name is Zhang heng(张恒). You can call me Gavin. I was born in 1990s.
I am an IT developer focusing on back-end technology, and a strong advocate and believer of Free Software.I used to serve jd.com as an Data Mining engineer and now serve Alibaba as an Senior development engineer.
I have an bachelor of engineering degree from Northwest University of China.
In spare time, I like reading book, surfing internet and watching movie.