Upon seeing a good amount of negative reviews on here, I was hesitant to apply/interview for ZS. However, I applied and was asked to come in for an interview days later! I didn't experience "disorganization" or any "unprofessional" behavior. In fact, I interview at the Thousand Oaks office and was really impressed by its seamless operation. After the interview, they followed up with me very promptly and professionally, and I even got a few congratulatory/introductory calls and emails. I recently accepted a very generous offer to work for ZS on the East Coast, and hope more people will give this company a chance because so far it's been great! Interview tips: behavioral and case interviews were fine, but the "unstructured case" interview tripped me up a bit. Make sure you're able to answer general/broad questions about starting/running a business.