0th round HR introductory call, asking about background, nothing technical; 1st round: math questions about probs and calculus; 2nd round: ML conceptual questions and system design; 3rd round: leetcode-style coding. 4th round: discussion with associate vice president.

Five arounds. 1 round behaviour 1 round math 1 round machine learning fundamentals 2 rounds of coding. If you have publications, they discuss your recent papers as well. The people are nice but the questions are pretty hard