Pros
Good support from the senior management overall. Wide range of clients and types of projects, with some luck, good timing, and personal initiative you can join some interesting projects. Wide range of support resources and internal training. Generally very accommodating in terms of time off. Benefits are OK. If you know what to make of your career and growth, it can be a good place. Not cliquish but there is an expectation to develop your own network of colleagues and promote your abilities. Overall quite a good place to work at.
Cons
Lack of sense of community. This may not be a big issue for senior resources who have learned to direct their own careers but may be more challenging for junior folks. Although progress is being made, there is room for improvement in branding CSC as a whole ... lack of identity to some degree. More focus and support in developing high potential resources would be a plus. Most consultants tend to be treated somewhat equally which is fair enough but may be discouraging for those who 'go the extra mile'... it would be good to have tiered incentive schemes to recognize strong performers. Work/Life balance depends on the actual project (as with any consulting firm).