Regarding my background:
I am in my late 20s, with a background in Computer Engineering and Computer Science.
Regarding Mandarin Chinese:
I have been actively studying, applying and engaging Mandarin Chinese since 1999; it is by far my most involved hobby. I've completed extensive study, both in University curriculae and independently, in the U.S. as well as in Nanjing, China. I've lived in China for more than 3 years.