here is some info from someone working in the banking line.

If you are below average in a bank operations, you may not be much better off than an average engineer. Btw, degree holders also work in bank operations (just to make sure we are comparing apple to apple)

In Citi, those operations people at CBP are not earning much. A degree holder starts at 2-3k pm. So after 5 years, still earn less than 5k pm. If you are not above average, you may become stagnant on a low yearly increment of 3-5%. Without promotion, you get stuck in the pay bandwith which means you can very well be having a family but surviving on 5k per month when you are in your 30-40s.

There is alot of emphasis on the well paid bankers but people don't really take into account the back / middle office. These guys are not well paid.