TikTok

1. Self-introduction. 2. Very detailed queries on your past experience, focusing on technical concepts. Caring much about how you came up with your solutions and your thinking on why your methods worked. 3. Coding test. 4. QA.

Briefly describe the project. Then, begin addressing the questions. To address the questions, you need to explain the ideas, complexity, and design test cases, and then run all the cases.

3 rounds of interviews. First round: Interview questions related to: * Projects discussion. * Message brokers. * Different types of concurrency handling. * Locks. * Data pipeline processing. The LeetCode question was fairly easy: reverse a binary tr