I applied through university. The process took 1 week. I interviewed at Bain & Company in Nov 2017
Interview
I applied through targeted on-campus recruiting and received an invite shortly thereafter. The interview process was two back-to-back cases. Each case was interviewee led with supplemental charts and data. My interviewers were both very warm and comfortable. There was a brief "Tell me something about yourself" in the first case, but the process is very case heavy.
I did not proceed to the next round, but still received a phone call from one of my recruiters to explain the process - a very nice touch.
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.