Ventajas
Good work week hours. You get every other Friday off. Plenty of vacation time. Very good 401k. Decent medical benefits. Coworkers are the best to work with. Excellent talent and ingenuity. The developers are top notch, project managers are awesome to work with to a degree.
Desventajas
If you are a test engineer, you will have every project manager, associate director, director and senior director know better than you how to test software. They conform to the factory based test method. They wont let you deviate so don't try. Even with their extremely educated management, they seem to know little to nothing about Tacit and Explicit knowledge or ignore it outright because it doesn't fit into their outdated method. But aren't above informing you how a test case is to be written so that anyone can run it. (A terrible model that makes lazy testers, expensive test case documents, and crappy software)