Initial screening with the internal recruiter went very well; she was very personable and explained the process, thinking I would get along great with the hiring manager. I then had to complete a take-home "case study" that was definitely more of a data science/ML problem, having nothing to do with supply chain optimization. The data was synthetically/obviously very messy, and the accompanying 10-question prompt wasn't really cohesive to the implied problem you had to solve. This was all very annoying since we hadn't even had a real interview yet and I was expected to spend several hours on a project unrelated to the job description. The interview with the hiring manager, moreover, was not great. We chatted for a bit and he asked some basic questions about my resume. It was clear he had no real understanding of optimization/operations research and wasn't sure how verify my experience or what questions to ask. He was also more of a peer, considering our mutual experience, despite the way he talked about "his" team and "his" expectations. Unsettlingly, he explained that the company actually has a separate, dedicated OR team that he talked negatively about and said that this role was an attempt to "build up those capabilities on his team." Good to know I'd be jumping directly into a political situation... In short, we didn't click and he didn't come off as the kind of manager I'm looking for. Overall, the interview process was very off-putting, which is a shame given the interesting OR challenges this company probably has. Didn't expect a follow-up; got an auto-generated rejection email more than a week later.