ZS was extremely prompt and efficient throughout the process. I was approached by a recruiter after applying online who described their business model, brief history of the company, structure of the role, travel requirements, future steps etc. The second round consisted of a two part interview: a half hour case study (for which the interview showed up a few mins late and apologized) and a half hour personality fit test. The case was done over zoom - a few slides were presented and I was asked to work through, while asking questions and needed to make a final recommendation. The case itself did have some calculations, and was moderately difficult (but connected to the field I was applying for). The personality fit consisted of 4 situations given to me and I was asked to give examples from my background