Pros
Blackrock has some very intelligent people that work here, so on a personal level one can stand to learn a lot. Great name to have on your resume.
Cons
There is a lot of division within the company between Ex BGI, Ex MLIM and BLK employees. People seem to introduce themselves by declaring which group they belong in, which is contrary to the 'One Blackrock' culture that the Senior Management harp about. The company also has major culture devides which makes it a very political environment to work in and also does not inculcate any trust across the said groups. The culture is not very tolerant of strong dissent, anyone who stands up to senior management to say this is not how things should be done seems to get thier hands slapped. Very very fear driven culture. Feels like a bad wallstreet movie from the 80s.