It was one of the worst interview experiences I ever had. There were three rounds and each of the rounds was rescheduled many times. It happened like I was waiting in the interview call and the interviewer didn't join. And the worst part is after three rounds, all of a sudden the HR stop responding to mail and I didn't get the final feedback. So my suggestion is don't waste the candidate's and your time if you are not willing to respond to the mail.

Four rounds: 1. Coding: SDE coding round 2. ML breadth: LR, decision tree, boosting, random forest, etc 3. ML depth: Project and in and around that 4. HM (ML): Project and in and around that