Singapore is another good option. I believe it has a pretty straight forward work visa system. Also a growing number of startups. Here are some job boards:
Hong Kong is also an option. Relatively lenient on the work visa as long as you are skilled. Similar with a growing number of startups and big corps hiring lots of developers.
Shoot me an email (in my profile) if you need help / are strongly considering HK.
Shoot me an email (in my profile) if you need help / are strongly considering HK.