Hoping for some honest advice.

Am thinking of switching to civil/public service from current banking operations back office.
Am 33 this year, ntu engineering degree (pass), 5 years banking operations experience
Currently getting 4.2k only

What kind of positions (non-engineering, non-uniform) can I appy for in the civil service/public sector?

Do I stand a chance with pass ntu engineering degree knowing the civil/public places great emphasis with paper qualifications? (If not, i don't want to waste time trying)