I applied through an employee referral. The process took 3 weeks. I interviewed at TikTok in Apr 2025
Interview
3 rounds of technical interviews, each round will have a LeetCode problem. The interviewer also asked about the research projects and some basic knowledge about ML and LLM. Each round will have 45 minutes.
Interview questions [1]
Question 1
one leetcode about sliding window and one leetcode about DFS/BFS on a matrix
three rounds, each has coding + ml basic + resume related questions
understand all the details in resume is important, since might go very deep down the project you have worked on
The first round was mainly a CV walkthrough.
The second round focused in depth on one specific project.
Both rounds also included LeetCode medium-level problems.
The third round was with the hiring manager with both project and problems for their business.
I applied through a recruiter. The process took 1 week. I interviewed at TikTok (San Jose, CA) in Mar 2026
Interview
one hour first round tiktok usds phone screen interview. past projects questions, leetcode mid questions, and machine learning, deep learning, large language model questions. And then ask the interviewer questions.