TikTok Machine Learning Engineer interview questions

Surprisingly straightforward — I expected a tougher challenge for a machine learning role. After a quick recruiter screen, the first technical round focused on implementing K-means clustering, which felt familiar. Handling edge cases for empty clusters was tricky, though. What really helped me prep were the algorithm explanations on PracHub, which gave me confidence going in. The final interviews were a mix of problem-solving and behavioral questions, and in the end, I received an offer that I accepted. Overall, it was a decent experience.

Asked about past projects and work experience in detail. Merge sort, a Medium-Hard DP problem. A case problem with designing a model to recommend items for tiktok shop. Interview was in Chinese.