The process took 6 weeks. I interviewed at McKinsey & Company (Atlanta, GA) in Oct 2010
Interview
Three rounds - first round included a very difficult and fast paced aptitude test; second round consisted of three 1:1 interviews with associates and engagement managers; and third round was an interview with 2 partners and one associate principal.
McKinsey paid for travel for each round, even though they only advanced a fraction of those from the 1st round on. Very impressive company, remarkably organized, professional, and it's easy to feel like a part of the team before getting an offer.
One thing that stood out - personality matters. Be friendly and outgoing, and don't look too nervous. A lot of brilliant but awkward candidates who didn't get to move on to the next round.
The interview is structured exactly as the preparation materials describe, i.e. personal fit and case. All interviewers were friendly and supportive. After each interview round I received helpful feedback. The cases are not easy but fair.
Interview questions [1]
Question 1
Questions regarding the case. Interviewer will led the case though
First, there is a computer test screening. Then, you get invited for the first round interview, usually conducted by an AP. Then, for second round, you have two interviews with Partners. You get feedback quickly, less than a week between interview and feedback
3 stage interview with increasing seniority. Opportunity to prepare with current colleagues prior to interview which was useful. Straight forwards process, no big suprises if you prepare in advance but prep is needed