I applied through an employee referral. The process took 1 week. I interviewed at BRG (Washington, DC) in Dec 2012
Interview
I had 2 interviews - neither in person. I had a 10 minute casual conversation with the person referring me, and a 20 minute phone interview. I recieved an offer the next day. However, the company was desperate for employees at that time and I think has implemented a more strict interview process. This company is growing steadily and experiencing some growing pains, so each individual's interview process may vary wildly.
Phone screen and then second round interview that was technical, was mainly based around coding and solving questions through writing code live, even the phone screen had some technical aspects.
One recruiter screen, one take-home technical case study, and then one final round with an Associate Director. No tricky questions and the case was also reasonable with 2+ days to work on it. The managing consultant who did the case interview spent over an hour with me during the interview and just got good vibes about the culture throughout.
Interview questions [1]
Question 1
Asked me about my experience working with multiple stakeholders and providing feedback or managing performance of others.
Recruiter phone interview (going through resume, expectations) followed by 3-4 interviews with multiple team members over the next few weeks all completed online. Was then ghosted by the recruiter which felt unprofessional for a firm after multiple rounds of interviews with a candidate.