TikTok Backend Engineer interview questions

Started straight away with the technical interview, giving a hard leetcode style question. Thereafter, asked about some networks lingo such as difference between TCP and UDP, HTTP and HTTPS. Afterwards, allowed the interviewee to ask some questions to the interviewer.

3 rounds of interview. First round: Interview questions related to: Projects discussion. Msg brokers, Different types of concurrency handling, Locks, Data pipeline processing. Leetcode question was fairly easy: reverse a binary tree Second round: Project further discussion, Previous internship experience. A lot of network questions. Os questions: Mainly focused on memory management. 3 leetcode questions: 1 hard. 1 medium and 1 SQL. Third round: Interview with hm. Discussed about recommendation archetecture. 1 long medium algorithm question.