that depends on what you can do, graduate from CS undergrad is a good start point but you will need extensive research and study on some of the computer graphic subject before you can make anything useful. personally I didn't see Hongkong has too many position or course about this aspect. But let's talk more about what you know. Do you know maya API or Houdini HDK?
It's great to hear someone who want to do more development on CG. certain degree of maya application is great as it can help you to understand the architechure of Maya and what do your user need.
I will suggest you do a bit more application developement, check out the maya API section on the maya documentation.
e.g. how about writing some plug in for after effect and maya?
there's plenty of information on Internet for these topic.
well, you have to understand that Hongkong's pretty slow on this area....so... but then it doesn't mean you got no chance on finding a development job. howver, you might have to start as an artist at the very beginning.