TikTok Machine Learning Engineer interview questions

First Round Leetcode 1d DP, Solved it using two methods. Answered how to build embedding function and what RAG structure to use. Still no pass. The interviewer's mic during the coding is making a lot of buzz noise and they will not turn it down. It is frustrating experience.

Approached by recruiter with whom I had an initial phone call. Then had a video technical interview. The procedure and logistics was all very smooth. I was asked about my background (with a couple of follow-up questions), then a couple of basic ML questions, then a coding question.