First stage: Technical discussion of resume items with data scientists and machine learning engineers. This was decently casual with a lot of interest shown, even in niche topics.

Second stage: An easy LeetCode problem was presented. I was asked to describe my thinking process, with that being the primary focus.

Third stage: I was given "fake" code representing some I/O in a machine learning context. I was also asked to think out loud and was willing to answer questions if needed.

Final stage: Behavioral questions. The interviewer was clearly just reading off a prompt and filling in a summary of my response, with not much conversation or room to elaborate.

They questioned me about my educational background, being in mechanical engineering, not computer science.