Trust me. You would literally code for food if you want to do compiler work in Hong Kong.
I have only seen one compiler opening by a HK company for many many years.
http://icubecorp.com/career/
Last time I checked they had a job ad on jobsdb. Now it seems that the compiler position is in ShengZhen. I think why this company hires a compiler engineer is because of Fred Chow, who is a big wheel in the compiler circle. He worked at SGI and architected Open64.
https://www.linkedin.com/in/fredchow/
But he went to Hua Wei apparently.