Expat contracts finished years ago in SQ and most jobs in any sector are local terms unless you’re a very senior manager. The country is first world and not considered a hardship posting.
A job with SQ is best looked at as a long term career which will be rewarding over time, rather than a short term opportunity to cash up and move on.
Housing and private school fees are the two big financial killers, if you expect to run a car as well don’t even bother coming. It’s doable if you set your sights a bit lower housing wise, send your children to local schools which are of a good standard, and take public transport. A plus point is that a full time maid is affordable.
If you go for permanent residence you get more job security, non
PR foreigners were laid off during COVID. However you are liable for central provident fund contributions which are also made by your employer, the money is your retirement fund. Citizenship is also possible giving you a top level passport. Note that any male children given
PR status are liable for 2 years national service.