Folks! I will take this.
Mate, Hyderabadi!
If you want to visit Singapore for a holiday, then you need to approach your travel agent in Hyderabad to get a visa from the Singapore consulate in Chennai. Depending on your current status, you may or may not be asked to place a deposit (last I heard was about Rs. 50000. Not sure how much it is now). You will get a single entry visa for 14 days validity.
If you are looking for a job, then you will have to apply to head hunters or check our Monster.com.sg for listings. Again, you will have to check if the prospective employers are willing to apply for your employment pass here in Singapore.
I suggest you have a thorough read of
www.ica.gov.sg
Its an excellent resource for visitors and potential employment seekers!