It was a bad interview experience, I can feel the interviewers didn't respect the candidate too mush, and they might even laugh at your answer ! (1). First interview was Tech Screen, the interviewer will ask you questions as many as possible. (2). Second interview was Live Coding, the interviewer will ask you finish a algo question (hard level Leetcode question) in 40 minutes, and complete all tests. He will degrade you if you can't find best solution. He will judge you impolitely ! (3). Third interview was Design, the interviewer will a question and criticize you if you make any mistake.. No respect, and No seriously at all !!

This has first round of HR screening and two rounds of Technical round (more coding discussing with interviewer) and one round of system design. Later last round of offer discussion.