Instacart Machine Learning Engineer interview questions

Initial Call with a Recruiter. Talked about visa situation and salary expectations. Moved forward to a technical round with a senior engineer. It was a moderate interview , signed an NDA so cannot disclose actual questions. After the technical interview was onsite interview via Zoom because of Covid. 5 rounds onsite three technical, one with hiring manager and on Systems design interview with a group.

The first round was phone screen with the recruiter, followed by a coding interview. During the coding interview, the interviewer was not interested and was working on the side. While I was explaining the solution, he wasn't listening and at one point said he accidentally had muted me. Very unprofessional. The solution was correct as per this interviewer (idk if he really looked at anything I did) but I was later rejected.