This was the first time I had such interview experience which to be honest was not the best. The first interview was rather easy with some pair-programming and some typical DS questions. The final round was 6 session each around 1 hour. I had so many sessions all focusing on the leadership principles and they had overlapped questions "tell me about the time....". There were few deep questions regarding Data Science and Machine Learning. There were only one session which I can call it deep dive which was so free style. The interviewee didn't have any deep follow up questions, I also asked if there is any tool so I can write some formulas or sketch the pipeline but there were no tools available ... The interviewee also gave me a hint on the project to be retail-related (that was the team which I was applying for) although the question was `tell me about a project that you've work and have deep knowledge of`. I didn't have any recent retail-related project, of course, cause I was working in other industries in my past job and if it was a hard filter they should have notice it earlier in the resume review. At the end of the day I had no idea what was the expectation, if I did good or not. Overall, I would not recommend this type of process for any Data Science job interviews and all in all was a bad experience.

The interview takes 1 month, 1st round on 60-min technical screening, 2nd round with 5 team members, hiring manager/skip with each of 60minutes to discuss all aspects of your experience, skills, coding etc.