I applied online. The process took 2 weeks. I interviewed at Root Cause (Boston, MA) in Sep 2015
Interview
Long and very in-depth process. They really care about who they are bringing onto the team, how they will work with others, and most importantly, how well they can do the work. Skills and degrees matter. You don't want to be too overqualified but they definately go for the Ivy-Leaguers. It can take a while for them to get back to you in terms of process so be prepared for a wait. Everyone was very pleasant during the interviews and are very warm.
Interview questions [1]
Question 1
Give us a time where you had to juggle multiple priorities and/or supervisors.
First step was a one hour phone interview within two weeks of sending in application. Second step was an onsite interview of 4 hours with a pre-interview research assignment and presentation. The onsite interview included 3 interviews, three assessments and the presentation
Interview questions [1]
Question 1
Many 'tell me about a time...' that were very specific.