I can only speak about the department where I worked, which was a department that supported sales efforts. I have heard that people who have worked in other departments have had better experiences.
The biggest con for me was the cold atmosphere. The person on the other side of the cubicle wall from me would e-mail rather than speak to me in person. This person was the most experienced and knowledgable in the department. I could have learned a lot from the person but was too intimidated by the lack of warmth to talk to the person much. Almost everyone else in the department behaved similarly.
There seemed to be a lot of fear about getting laid off if one's timesheet did not reflect an adequate number of billable hours. (At the same time, there wasn't enough work to keep the whole department busy.) This was perhaps one of the reasons for the cold atmosphere. I think this fear was a holdover from another era, though there were layoffs in the department about a year ago.
There was one person in the department that very few people liked, and they would gossip about her constantly. Very uncomfortable.
There wasn't enough work! I thrive under pressure and was bored most of the time.
There was an abusive person in another department that I had to deal with. Like most people I encountered at this company, this person had been there for many years and was tolerated, though everyone acknowledged the person was abusive.
Finally, at the location where I worked, coffee was not provided. There was a stand outside where you could buy it if you wanted to. Prices were about half Starbucks' for a basic cup, but it wasn't very good coffee. Anyway, not providing coffee as a perk just seemed to say something negative to me, right off the bat, about the company's values.
