I made it through the entire process. I wish I had taken the advice seriously here that said DO NOT WASTE YOUR TIME! I missed out on applying and interviewing for jobs that respected my time by studying for this. The recruiter I worked with was great. She kept me in the loop and in constant contact. But the whole process is extremely flawed. She asked what I thought at each step but how can I genuinely tell you that your interview process sucks while I'm still trying to go through with it? Newsflash, your process is terrible. No matter how well you interview, if you mess up at all in a case study they throw your candidacy in the garbage. 1st round - recruiter call 2nd round - 45 minute case study 3rd round - 60 minute case study + 30 minute interview final round - 60 minute case study + 30 minute interview (about a week in between each round) The first case study I got feedback that I was lacking confidence. I completely understood and have no problem with hearing that, but at the same time I was not going to confidentially give answers to test questions over the phone. I'd rather be humble and collaborative than proudly shout the wrong answer. My interviewer and I got along well though. The second case study we were very collaborative together and he understood how difficult it was doing this over zoom. It went well. The hiring manager interview followed after and he was easy going and asked normal questions about experience. We definitely connected. The third case study was atrocious. It was the only lady I met with, she was frozen when first joined and that was distracting. I was talking to a frozen picture on zoom for the first ten minutes. Finally she fixed it and then it seemed that we had to speed through the set up of the problem. I also felt like she didn't care to be there or work with me, and seemed to be looking at her phone. There were maybe ten questions total, two theoretical questions I knew were a problem as I couldn't think of answers fast enough for them, and instead of receiving encouragement or hints there was awkward silence. The first was asking hypotheses on what would cause margin to be down. I admit I should have known the theoretical answer instead of just the mathematical one, but I forgot under pressure that we were dealing with sportsbook bets where the bets have to come in balanced. If she had mentioned anything about the initial restrictions I would have gotten it. Or if I was able to work without a microscope on me like a normal job. The second that tripped me up a bit was on if there was a data feed issue and people who were live in person were making bets as it happened. All other questions I answered with no problem. After this case I had to immediately meet with the director and I could tell he really liked me. We actually ran out of time in our discussion. 30 minutes to interview versus wasted time on these case studies is frustrating. I knew after that last round I needed my personality and resume to speak over the one or two mess ups in a case study. Especially the case study from a person who I won't be reporting to as a manager or director. It didn't. The feedback I got was everyone really liked me, except that one person. So I can't get the job. You would think if there were no other issues they would either take a shot on me or ask to meet again, not throw all that work down the drain. It's insane. I knew immediately I'd be writing about this. TLDR I hope this helps someone study since that's all they seem to care about.