Vantaggi
Interesting work, great benefits, it's easy to move around the company to find new projects or to take on a new role, very smart people, the company has a solid reputation, you can work onsite or remotely (lots of flexibility), the buildings and offices are very nice (but you might have to share an office), and management is focused on making MITRE a great place to work. MITRE is a wonderful place to work at any stage in your career. The new CEO is a strong leader who will make hard decisions, maintain the integrity and quality of the company, and continue to foster a culture of learning and innovation.
Svantaggi
The pay is rumored to be lower than other companies, but the environment is less cut-threat and you have a better work-life balance at MITRE. There is still buzz that men are paid higher than females for the same work/roles, but the company put measures in place to make sure promotions are more transparent, which should improve the perception of inequality.