There was a typical first round, one on one, hour phone interview with an operations manager, consisting of discussing the position and work experience. I remember some math and a few scenario questions. The process moves very fast, once accepted for a second round interview there are preparation calls so you have an idea what is expected. The second round interview was 4 hours starting with a math problem about throughput with other candidates, at this point you have the opportunity to see the competition for the position. Then there are four 45 minute one on one interviews with a break in-between. The questions are STAR behavioral based most can be found online. The portion with the HR manager was frustrating as they wouldn't answer questions and seemed to be intentionally difficult to communicate with.