I applied online. The process took 3 weeks. I interviewed at ZS Associates (San Diego, CA) in Oct 2017
Interview
First Round: Two-part phone interview with managers. First part is a fairly straightforward behavioral interview with time for you to ask questions about the firm. Second part is an interactive case interview through the assistance of a slide share program. Case was relatively simple and tested methodology over subject matter expertise.
Second Round: In office interview that lasts nearly all day. Morning session begins with a written case where candidate is given ~60 minutes to prepare a 5 slide synopsis and recommendation. 35-40 minute presentation follows with two managers who ask fairly difficult follow-up questions to push problem solving mechanism. Lunch acts as a behavioral interview as you go with a couple potential peers and discuss career plans. Afternoon session has two parts, the first a less formal case interview with a principal that includes no notes. This is an "off the cuff" thinking exercise. The day ends with one final behavioral interview that mirrors that of the first round phone call.
Interview questions [1]
Question 1
Tell us about a time you used analytics to solve a difficult problem in the workplace.