Pros
Team was great, very knowledgeable people that can be very dependable, open to learning and giving advice of their own. Middle managers were wonderful in giving the best opportunity that they could for their employees and will back them up.
Cons
There's definitely a little truth to the sayings that First Data bought Fiserv, not the other way around, and stole the branding. First Data is not the most reputable company and absolutely does not care for their employees. Worse, they don't trust them. So spyware is installed on PCs to make sure you're working, time tracking is enforced for every hour of the full 40 hours, everything but the absolute bare minimum is blocked on the network (No social media, no personal emails, Stack Overflow was blocked for a little while until they caved from the massive backlash). Layoffs are now very frequent and you're nothing more than a number for that, with absolutely no regards to performance, coming from higher-ups. Middle managers just shrug and say they had no say. I've seen some of the best employees, full of passion and working for a long time, "let go" because they were technically the lowest position in the team. The corporate bureaucracy is the worst I have ever seen. Often forced to use some infrastructure or proprietary integration because it's some exec's baby, even if it's absolutely terrible and a common point of failure.