I applied through university. The process took 4 weeks. I interviewed at ZS Associates (Princeton, NJ) in May 2012
Interview
On campus interview - case study, behavior interview. On site interview - multi-part interview including case study, demo, behavioral, lunch. It was an intense interview process. If you get stuck, discuss thought process as that is often more important than the end answer anyway. The onsite interview is a long day, so be prepared to be on your game for many hours. This gives you a good taste of ZS life.
Interview questions [1]
Question 1
How many barbers do you think there are in the city of Philadelphia
The process took 2 weeks. I interviewed at ZS Associates (Toronto, ON) in Sept 2011
Interview
The interview process for undergraduates is fairly standard compared to other consulting firms. There are two rounds of interviews. The first round consists of a behavioural interview and a case study type of interview, related to the type of work that ZS Associates is most famous for. The second round is a half day interview, with some time given to review a case and prepare some answers where you are quizzed on the details, an interview with a more senior Operations Research Associate to take you through some of the work they actually do, and interviews with managers and partners.
I applied through university. The process took 2 weeks. I interviewed at ZS Associates (Ann Arbor, MI) in Sept 2008
Interview
1st round in campus involves a behavioral interview and simple case
2nd round involves a manager interview, partner interview, lunch with associates, and a case packet that is reviewed with a consultant. The interview process is pretty sraight forward and responses are quick.
Interview questions [1]
Question 1
No curve ball questions, just your regular behavioral questions