Pros
It's very hard to get fired. They'll take anyone, regardless of skill level or professionalism. People would skip out on work and come in late and leave early for months with no reprimand. If you work hard, you aren't rewarded either.
Cons
Frankly, being at CGI was the worst two years of my life. Management plays favorites and there is little room for growth in your position. You will not get any career development, even if you beg to your boss. Especially as a consultant/college hire. They treated experienced hires well and treat college hires like dirt. CGI Federal is so behind in all IT practices, its such a joke that they're one of the top places to work at in the D.C. area. They can't even handle following Agile methodology and give in to scope creep all the time. The project I was on was failing so miserably, its amazing that they managed to keep the client for so long. They pay far below their competitors and raises and bonuses are tiny. They scam college hires by lying during the recruitment process. Beware: all college hires just are on-boarded to become glorified help-desk associates. If you're considering a job offer here, heed my advice and reject them. Everyone I worked with hated their jobs and was miserable. Including me. You'll be much better off at a different IT consulting firm.