I applied through college or university. The process took 1+ week. I interviewed at Bain & Company (Washington, DC) in Jan 2016
Interview
First round was an on-campus interview consisting of two cases (with time leftover for behavioral) with two different managers. Second round was on-site at your top-ranked office preference, two cases with two different partners. After submitting an application, the actual interview process had a very quick turnaround -- I received an offer less than two weeks after hearing I was selected for a first-round interview.
Interview questions [1]
Question 1
Typical Bain-style cases, with handouts displaying charts and information. One on a restaurant franchise, one on "superhero" pharmaceuticals, a supply-chain case in an industrial plant, a casino case with a market-sizing component.
2 cases for R1. Pretty straightforward cases about revenue optimization opportunities. There was a little bit of market sizing but all data needed was given. No behaviorals asked in round 1 for me.
Interview questions [1]
Question 1
What office did you choose and why? Do you have competing offers?
2 rounds, 1st round 2 small cases, not very difficult , market entry cases.
2nd long case with a deck to read and prepare answers..45 mins to read, 15 mins to answer
Three rounds of interviews, generally 2 rounds in person or remote with live consultants. Each round involves a 2-3 case interviews each, which generally also include a set of behavioural questions.