Pros
It's an excellent environment, where you can expect to work with the smartest people in the industry - you learn a lot and you are challenged to stay on your toes to be among the best. You get opportunity to work at the international offices, your ideas and proposals are taken seriously irrespective of your position in the hierarchy, and the money and perks are among the best in the industry. There is a good work/life balance as well, and you are afforded the flexibility as long as you can get the job done. There is also a good level of trust with employees. There have been times in past, when the company was not too open, but currently for the industry it is in, it is surprising how much information it shares with its employees.
Cons
The company has gone through its cycles, and the downturns have not ended on a pleasant note for "not among the best" employees. Also, have seen good things or initiatives easily forgotten during the difficult times (Great place to work survey).