Pros
It pays really well, with great benefits, although that may change now that Investment Banks have lost a bit of their glamor. On the other hand, it is a big firm, prestigious, and there are lots of opportunities for career growth. Working in the Technology department, they gave the impression that they were really concerned about your personal and professional development. They have a lot of offices all over the world, so there are potentially a lot of opportunities for travel or movement once you have been there for a while - at least this is the impression that they give.
Cons
Long hours - but everyone else works long hours too, and performance is rewarded. This is definitely not the time to be entering Wall Street. They are not hiring at the moment, as is the case with most banks. A special concern is for international students ,because banks that received bail out money are under pressure not to hire internationals students for positions that can be filled by US citizens. This basically means all first year Analyst jobs -and these Investment Banking were some of the most lucrative jobs for international students coming out of ivy league schools and other good schools who needed visa sponsorship.