Pros
You get to travel a lot and you can collect a lot of airline miles. That's pretty much it.
Cons
This company name should be changed to Crapgemini because this company is the crappiest company I have worked for. If you are on H1b visa my sincere advice is not to join this company. They messed up my H1b renewal application so bad that even after I was working in my field of study (bachelors and masters both in computer science) my renewal got rejected. Their rate of approval for h1b is the lowest among all the big consulting firms. They filed my h1b application under non specialty occupation. Their immigration staff is based out of India now. Forget about immigration laws and regulations they can hardly write in English. 9/10 h1b applications get RFE and 6/10 applications get rejected. Management don't care. Once your visa is rejected they don't care. I worked for this company for 7 years and they treated me like crap. No help whatsoever. Again if you are on h1b please never ever join CRAPGEMINI.