There are two rounds of interview from campus recruiting for LA office. 1st round consists of 2 interviews, one behavioral by managerial position, one case by an associate. The case was pretty straightforward and structured. It's kind of like a walk-through of how they help clients market new products. The manager was friendly and shared a lot of trend issues with me. 2nd round consists of 3 interviews, 1 demo. 1 case interview was like a structured, walk-through as well. Might need to be careful not to make stupid mistakes. I did that... 1 case interview was more open-ended. I got a packet of slides and need to come up with recommendation. The manager suggested me to say my final recommendation first before explaining why. 1 behavorial interview was hard. The interviewer really wants specific answer.

I had an initial 1-hour interview on campus and was invited to the Evanston office for a second-round two weeks later. The first round was a behavioral and a case (written), and the second round was a behavioral, demonstration, lunch, and two cases. Overall the interview was not a bad experience, although one of my case interviewers was rather unpleasant and discouraging. ZS is highly interested in quantitative skills. Background/knowledge of the pharmaceutical industry is not required