Both of these good and bad reviews are true
Pros
If you read through these Glassdoor reviews, it seems like people are talking about two different companies. Some people love it. Others hate it. Both sides back up and their positions with facts. And guess what, both sides are true...If you come to CGI and get on a good contract that's growing and doing well, and you have a good manager, you'll love it. If you get on a failing contract -- and many are failing, particularly in Federal -- you'll hate it. Unfortunately, in my experience, the bad managers exceeded the good ones, and there's so little training, the bad ones can never be coached up to be good.
Cons
The cons are that the executives are horribly incompetent and many of them are all around just outright bad people -- self-obsessed, CYA, behind-kissing, obsequious know-nothings. Again, going back to my previous point...If you're on a good contract that's making money, you'll never have to deal with the idiots in the executive suites. CGI is cool like that...you've got little fiefdoms, and the ones that are chugging along operate in mini-silos, so you'll don't have to deal with incompetent, mean spirited executives.