The regulatory demands in financial technology, and especially in those industries where both the regulators as well as majority of the players may not be technically literate, are effectively the anti-thesis of robust and reliable engineering. When the industry regulations demand that for every potentially disruptive action (recovering from an outage is very much potentially disruptive) there has to be a named individual - not even a role, but an individual - to sign off on every single release step... This is why an outage can last for hours. An engineer, or even a lead, is with high probability not allowed to sign off on an out-of-hours deployment. The fix might take 20 minutes to identify, 5 minutes to implement, 15 minutes to test, and 10 minutes to roll out. But until the organisation can get the named [supposedly responsible] person online, the fix must wait, unreleased.
And the irony? The wider dysfunction may be imposed by the regulations, but it has been requested by the industry at large. It is the result of the industry players, majority of whom are incapable (read: technologically illiterate) of interpreting prescriptive regulations. So instead of figuring out how to meet expectations and adapt their processes, they have been lobbying for the regulators to come up with highly descriptive playbooks and step-by-step instructions. These sequences then specify rules and requirements that allow technologically incompetent players to comply, even if they do not understand why they are doing the things.
And then these regulatory playbooks become the One True Way[tm], effectively forcing dysfunctional practices, but also actively preventing any process improvements.
It's cargo-culting taken to the extreme: "do this and you will not be found to be non-compliant, even if the quality is utter shite". The worst part of this all is that the descriptive regulations make every effort to strip engineers of their agency or decision power. Every "modern" best practice is explicitly ruled as non-compliant and hence effectively illegal. I use scare quotes around modern to highlight that these practices are by no means modern and have been known since ancient times. There are research papers from 1950's that explicitly endorse [rapid] iterative bottom-up approach as the only sensible way forward.
The finance industry regulations explicitly reject them because these studies assume that engineers can be trusted to know what they are doing.
So... to anyone wondering why finance industry jobs are generally thought of as soul-sucking: that's why. They are subject to regulations, expressly designed to deprive individuals of their agency.