Pros
None. There are no pros.
Cons
They will lie to your face so they can pay you as less as possible. If you're consider going to CGI ALWAYS ALWAYS ALWAYS negotiate higher than what they are offering. You'll be put on understaffed projects. If you know how to do the work then you gain all of the responsibility and blame if you the project fails. The person they keep around somehow and can't do anything will be ignored. They will only train you through cheap or free online tutorials and throw you face first into a project. Hired to be a budget analyst? Well I hope you can learn how to build an app server with JBOSS in three weeks. They won't give you what you need to succeed. Their infrastructure are far below par. You have to wait months for what you need and then get blamed for not doing 3 months of work in 5 days. Look to the person to your left. Now look to the person to your right. One of them will leave CGI in 6 months time because better companies pay more for better talent. One of them, you'll have to pick up the slack for because he or she don't know how to do the work.