I had 1st & 2nd rounds. Each 60 mins. 1st: introduction of job and myself. Coding question medium leetcode. Overall, it was pretty good. 2nd: it happened 4~5 days after the 1st one. The interviewer was rude and did not deliver requirements clearly. The interviewer seemed already not interested in the beginning. Began with Intro. about myself and 2 coding questions. first was easy~medium. Second one was hard one. I wouldn't want to work at Tiktok after I saw the interviewer's attitude. In conclusion. Waste of time.

Round 1: Technical Interview, leetcode hard question Round 2: Project/Experience deep dive, leetcode hard question (only 25 minutes) (Rejected) The interviewers were very nice, gave hints, and seemed interested in what I had to say. Very smooth and positive experience overall.