Pros
The number one best reason to work for Keane is, undeniably, the people. From Management, to Human Resources, to fellow Consultants, everyone is not only respectful and professional, but friendly and absolutely a testament to the "IT People are one giant family" mentality. This is especially important when you're starting out at a new position, or joining the workforce for the first time. I joined Keane as a junior resource, both in terms of education, and age. I was initially very, very apprehensive regarding the job offer, as my number one concern was the potential to be marginalized based on those two aspects of my qualifications. It took less than a week for me to realize that my concerns were not only baseless, but absolutely divergent to the reality: there isn't a single person within the walls of Keane willing to look down on you for being "junior", as long as you're willing to work hard, and allow others to share their experience with you...which they do as freely as a LAN party full of gamers discussing the newest overclocking techniques. Management is very approachable about absolutely anything, and very quick to assist in the resolution of issues. There is absolutely no need to be "afraid" of your boss, your boss' boss, or your boss' boss' boss' boss. Any level of management is available, and willing to assist where possible. Keane offers almost limitless opportunities for training, and encourages self-directed skill enhancement. All in all, Keane offers a positive opportunity for growth and skill enhancement, and an absolutely first-rate work environment.
Cons
This varies widely not only between client assignments, but between teams within that assignment. Some teams tend to be very procedure oriented, and thus may be seen as less challenging, while others may be seen as high stress due to additional overtime requirements.