The answer to your question depends on how long you intend to stay and what sort of roles you are looking at after exiting.

It sounds as if the main incentive for you is exit opportunities in private sector. I feel you should be open to the possibility of staying 3-5 years, if not the level of “inside knowledge” (if any) you acquire as a rank and file may not reach the depth for you to compete meaningfully with say analysts who have years of solid operational knowledge in financial institutions.

Not to mention that as other posts raised, minimum notice period for departments with access to sensitive info can be extended beyond 3 months to 6 months or tiagong even a year! By that time, you lucrative job offer may have evaporated as even if the role is willing to wait for you, the norm is to subject staff leaving for FIs to cooling measures - not least restriction in access to information. In short, any “inside knowledge” you come across may no longer be updated or relevant by the time you’re out.

This is not to say there is totally no edge after working at MAS, many have done well in private sector after leaving MAS, but it is likely that those people were brilliant on their own merit and would have thrived whereever they go with or without the regulator experience.