Not necessarily a cons, but a words of caution. CGI is not a software product company (at least for now, it would certainly love to change that). It is built around enterprise-scale IT projects, managed IT services, and IT strategy consulting. If you are a hardcore software engineer and are not interested in developing broader business consulting skills, you will likely find your career ladder to be short and feel undervalued. At CGI *everyone* is called to be a consultant. It's part of the culture and you aren't going to change that. You also won't see the kind of money being thrown at you like you would at a SaaS/PaaS/IaaS company. CGI values time in the trenches, so you won't start seeing big checks unless you stick around a few years, and start impacting revenue. Also CGI has some interesting policies around limited middle management which is both a pro and a con. There's only allowed to be like 4 or 5 people between anyone and the CEO, and there are rules about how many people management roles should manage, which severely limits the number of roles. Breaking into the Manager/Director level and above can be challenging, often requiring good internal connections and good timing.
