Vantaggi
Employees are hard working and committed. There's little micro-management, depending on your manager. You also get to work with a lot of other companies, mostly larger corporations, but also some startups. Another pro is you get to work with a lot of different technologies, though this can be good or bad since you usually don't get to choose.
Svantaggi
The biggest con is the lack of compensation. An engineering salary there is much lower than other companies in the area, including most startups. The equity/profit sharing is not worth much, the medical plan is not good, and there is no 401k matching. But hey there are free snacks I guess. It it also a very chaotic environment with no central leadership. This unfortunately leads to employees working longer hours than needed, and unhappy clients. Management is not very open, which leads to distrust. The work itself is not as interesting as everyone claims. It's mostly building software for large companies. The office is also very compact and loud. It's oftentimes difficult to get work done with all the noise. I think a lot of people on here are probably biased. In my opinion, it would be better to just work for a large tech company or as a contractor, and make a lot more money.