Although my career is not the best among the member here, I will still post my employment history with salary for those who wish to start their career in Singapore especially as IT professional.

Company A (Software QA - Oil And Gas Industry)
24 yo, Apr 2014, SGD2500 (Contract)
24 yo, Jun 2014, SGD2700 (Convert to permanent, 13th bonus + variable bonus)
25 yo, Jan 2015, SGD2980 (Increment + Management Remove 13th bonus - Due to bad oil price)
27 yo, Nov 2017, SGD2980 (Finally resigned because no salary increment, bonus and career progression in 2016 & 2017)

Company B (Software QA - IT service Industry)
27 yo, Dec 2017, SGD3400 (Permanent, 13th bonus + variable bonus)
28 yo, Apr 2018, SGD3600 (Passed Probation)
28 yo, Jun 2018, SGD4500 (Got other job offer, but company counter offer)
29 yo, Feb 2019, SGD4500 (Resigned)

Company C (Software QA - Gaming Industry)
29yo, Mar 2019, SGD5300 (Contract, no bonus)
30yo, Mar 2020, SGD5300 (Resigned)

Company D (Software QA - Automotive Industry)
30yo, Apr 2020, SGD7000 + 800 (Contract, variable bonus + monthly allowance SGD800)

From my experience in Singapore, jump ship is the best way to increase salary.
For those who want to come Singapore, remember open a Linkedin account, most of the recruiter search candidates from Linkedin. If you are IT professional, especially related to software development (Software engineer, QA, architect, Devops, Tech Consultant)