Just replying generally for fresh grad consideration.
Imho 3.8 is okay for stem. This salary is usually only possible with some form of bond. In fact, the Alibaba scholarship is amazing... If one gets in. However be mentally prepared Jack said 996 is mandatory.

If one work for US company via remote and some travelling, the pay can be 6k SGD per month no bonus. That is considered low for their hiring standards, however one must consider the tax for green card holders and their inflated prices for necessities such as dining out.

6k is roughly the same as 4. 5k in public service annual package. However the overseas exposure and industry knowledge is invaluable. Sadly few get this opportunity.