Story time! Years ago, I was a contractor writing (a small piece of) software for DBS. It was probably a couple of hundred lines of Java, and I probably delivered it by emailing a zip file to someone. I don't recall their code review standards being particularly ... existent.

Mine was a relatively small project with them.

There were other teams at my firm working on larger projects at DBS. Another story! A new employee joined my firm, and - on his first day - was sent to join one of these teams onsite at DBS. His day ended at 9pm /on his first day of work/. He gave notice on day two.