Had one informal phone interview with the recruiter from HR. The interaction with them was very pleasant. Then had a 30 minute video call with the hiring manager, where technical skills were verbally reviewed and an approach to problem-solving was walked through. Overall not an intimidating process, and was happy with how they handled each step, including following up to let me know why they went in a differnet direction.

I was contacted by HR and during the call Hr told me they'll send me a non-conventional case study which is closer to software engineering since I sometimes have to write production ready code. however they sent me an email afterwards saying this was a mistake and they're going the send me a data case. I put my hear into the case and spend an 3 ENTIRE! days on it. however in the interview nobody seemed to have read the case not even once. HR told me I'll have my second round with two ML engineers but then again they corrected themselves and said I'll be meeting with the product team. (overall very disorganized and I have a hunch that is not limited to their HR) I passed the second round as well and had a culture round at the end with typical behaviour questions. HR told me I'll be contaced the week after but then no one reached out, and when I followed up they didn't even answer! Overall it was a complete waste of my time.