Banking, especially non-consumer banking (i.e. IB, prop trading operations, etc) is divided intro three tiers: front, middle and back office.
Front office are the people directly dealing with "clients" (or better "counterparties") and get shitloads of money and an aura of being business savvy and knowing where it's at. Basically it's sales, trading and some higher-tier management. Contrary to what one might think based on the "Wall Street" films, these people don't need to be smart or sophisticated. I know quite a bit of traders, who only finished high school.
Mid office are the people who do the actual nitty-gritty work, that one would actually associate with a working banking institution: research, risk oversight (in Europe mostly known as risk control), legal, compliance, marketing, accounting, ALM, etc. They usually earn OK, but nowhere near what front office makes.
Back office are the people who are there for the infrastructure. Transaction banking, for example (i.e. making sure that your transactions are settled correctly, that money is wired to direct recipients, etc.) Tech is in most banks a back office thing (especially if we are not talking about algo trading). They earn shit.
I'm involved in quant finance, so I hoped, that I would see a culture shift after 2008-2013 from get-rich-quick-with-other-peoples-money schemes to a more serious business culture, but that is not the case. I honestly don't believe that Goldie can change its culture so quickly.