Pros
Really good place to learn, train and hone your skills for future employment or even your own future startup. Alternately, it's a stable company and if stability is what you want and you're able to adapt to the culture, this could be a good fit for you. This place produces much of its own completion, many of whom turn out to be some of the best competitors in the industry.
Kontras
As an engineer or technical expert, your role is clear: work hard, bill as much as possible, and recognize you were hired to work for and not improve the company. Marketing and management appear to be self-elevated and appear to have either systematically or coincidentally maneuvered most upward mobility and opportunity to contribute to the company's growth from the desks of the engineers and technical experts. It appears that only if an engineer or technical expert ascends into office or division management will they ever go anywhere other than the lower, wide and flat area of the org chart. If the engineer does ascend into management, they then incur two fulltime jobs: management and continuing to bill as an engineer. Tough on a family man or woman. I have personally received negative feedback from plenty of people in the industry. While I used to mention my prior employment there positively to prospective clients, I have ceased this exercise as I think it may do more harm than good.