Pros
We work at a subsidiary of this company in Cambridge. They try very hard to make people feel like they matter and that is very important. HR is there for you unlike most companies where they throw you under the bus for the company's good. They realize that growth is limited but work to find ways people can establish meaningful work that is important for the project mission. The environment is a plus as well. The people are kind, they try to accommodate workers with moves, work from home flexibility, ergonomic seating, etc as much as they can. There is no tolerance for mocking others or being cruel to reports or coworkers. In today's society a lack of bullying is in high demand. And there may be little games going on here and there but managers work hard to squash bad behavior and most certainly don't encourage it. I would say that the management tries to empower reports and are open to advice on their betterment as well.
Cons
Lack of tuition reimbursement. Not much ability to grow. Isolation can happen due to cubical environment.