Contacted by recruiter to pick a date for the interview. There are four round in total, three coding style and HR interview. each round is scheduled on a different day, you can only processed to next if you pass the first round ( sudden death). Three weeks later. First round:. 10 mins behavioral questions 10 mins technical questions 30 mins coding challenge (leetcode hard question). Result:pass. Second round: 10 mins behavioral questions 15 -20 mins coding challenge (leetcode hard question) 15 -20 mins system design question. Result: fail.