Pros
Smart, friendly people, a great campus, a collegial atmosphere, and the ability to address important problems are some of the reasons that make MITRE a great place to work. Of those there are two that stand out: the people and the mission. The people are terrific--smart, friendly, and helpful. The people I work with are the reason I like to come to work each day. They are colleagues, each talented and gifted in their own way, and they are friends. The mission is a second great reason. As an FFRDC, we serve the nation without a motive for profit. We relish the opportunity to apply the vast knowledge and experience of thousands of MITRE scientists and engineers to the toughest challenges of the nation in many domains: security, defense, flight safety, health, law enforcement, and more. In a less altruistic sense, the fringe benefits are a major reason to come to, and stay with, MITRE. Aside from a retirement plan that has got to be one of the best in the country, there are many small things that make a huge difference. MITRE has gone above and beyond to create a workplace to attract the best and brightest.
Cons
Working on a sponsor site can be difficult, especially if the sponsor sees you as just another contractor and does not "get" the FFRDC difference. Being away from the main campus and the opportunity to interact with other MITRE scientists and engineers can make one stale.