Avantages
Its a big corporation so if you end up at a right team (not the one I was in), you will get opportunities to apply for roles elsewhere around the world. Its comfortable for someone who prefers quite rigid corporate structure but again it really depends on the team. I struggle to think of the pros - I had some very nice colleagues, a nice view and the gym was in the same building.
Inconvénients
In the 5 years I spent in my role I did not get a single promotion (the flat structure of our team, there were people who had been there for longer than me - in the same role). I had one training course that was in my professional field, other than that it was endless compliance, health and safety, AML etc. courses that prominently feature one of the sillier corporate slogans around - courageous integrity. Yes I don't know what that means either.