Pros
There are extraordinary people who work at MITRE, and I have been privileged to have worked with many. These are smart, dedicated people in math, science, and technology. It is a place where you can truly make a difference.
Cons
In the last year and a half, a significant change has taken place. When former CEO Al Grasso left, he was replaced by Jason Providakes. Much of senior management has departed and has been replaced. Organizational structure has changed, stripping what were solid internal entities of their identity. We're hiring at a phenomenal rate of late, for what reason is beyond my comprehension. We seem to have lost the ability to say no to a sponsor who would have us do work outside our contractual work program, as well as the ability to question whether a type of work is appropriate to be done through an FFRDC. While developing answers to problems could take forever if we did a 100% solution for everything, the "60 to 80%" solution we're now to take could be very costly. This isn't who we are.