Jobhunter -- there are plenty of jobs here for multilingual folks! Come and join us!
Mag -- I beg to differ. I am an expat too and it is true that you have to speak proper English, it does not mean that Singaporeans have to lose their identity in speaking Singlish and start speaking prim-and-proper Queen's English. What is proper, btw? Even some rules are different in British English and American English.
I'm proud that I can speak English well (coming from a non-English speaking country), however I find it charming to practice my -leh, -mah, -lah, -ah, -meh, -lor and exclaim "Walau!" when I'm surprised.