Hi Amit,
Check in the following websites and apply directlyfor jobs.
1. www.jobsdb.com.sg
2. www.jobstreet.com.sg
Other factors to be considered
1. Singapore work culture sucks

People used to slog there for long hours (maybe more than 12 hrs/day..)
2. Also,most of the work would be maintenance and support related leaving little scope for development.
3. Cost of living in singapore is very high.
4. Based on your experience, you can expect somewhere around SG$4500 pm
All the best
Cheers