Primer AI ML Engineer interview questions

Intro call with recruiter. Technical with team member. Data challenge. Onsite. Onsite was one of the worst I've had. Mathematical whiteboarding was in one of the interviews even though I was told this would not be a part of the process. The questions were not outrageous, but not something I've looked at at all in 2 years. After not doing well on this particular interview I was shown to the door with no explanation after being told "we will follow-up". There was no follow-up and I was totally ghosted. I'm glad I had this experience because I wouldn't want to work for a company that represents themselves in this way.