Avantages
Infosys consulting is not your typical management consulting firm. Its pretty young compared to the other big 4 firms out there, and its been running as a fluid organization for a while. In an organization thats still young and small - theres always an opportunity to make your mark. The organization untill last year has been pretty flat, so there are a lot of chances for folks to be heard, and influence progress. Infosys really tries to hire the best of breed consultants - MBAs from top colleges or individuals who have specific domain or industry experience. This really raises the caliber of people that you work and what you can expect from your colleagues. I've noticed that the people are a lot more down to earth, informal, witty and not your typical consulting douche-bags (with the express look and the 'I'm better than you' attitude') - you can definately expect your peers and management to be more 'human'. I've recieved some phenomenal coaching from my senior management along my career at infosys. I really believe my senior management has my back when it comes to my career.
Inconvénients
Work life balance - like all consulting firms, you can expect to work the 20-80+ hours weeks - thats why they pay you the big bucks. Compensation and benefits are not as competitive to other management consulting firms (BCG, McKinsey), but supposedly more competitive than TCS and Wipro. Leadership communication around compensation has been historically poor but this is being addressed. There are still some integration issues between the consulting unit and the parent company. Don't expect to get a lot of training when you come into this firm. Don't expect to get your much of your target bonus either. Lots of operational issues that affect consultants (I would categorize this as growing pains for a company that is growing at a phenomenal rate).