As an expat, i would say 2000/week is essential to live in singapore. Of course it depends on whats your lifestyle.

I live in the city and housing is damn costly around the city area but if you move outta city like east or west coast, it would dry down to 1000 dollars per month.

But no way as an expat you can survive for 2000 per month . 8000/mnth is a decent amount of money to live a decent lifestyle (travel by MRT etc ) and of course to save some money.

Currently the finance sector is the hottest here and you should be able to find a job.

I work for a bank and i am an expat