I'm currently working in Hong Kong, and to be honest, tech companies here aren't really that good, the startup scene is close to nothing at the moment and finding a decent company that really cares about what they do is very difficult.
Just look through all the different job boards, jobsdb, indeed.hk, wall.barcamp.hk. Maybe a good idea to contact some recruiters, they have a ton of open positions since local talents isn't that great.