I applied through a recruiter. The process took 4 weeks. I interviewed at TikTok (San Francisco, CA) in Aug 2025
Interview
Recruiter reach out. Then recruiter conversation. They want to match you with a team before interviewing you. So I waited almost 2 weeks to get matched with a team. After that was a phone screen - leetcode medium. For onsite, there are 2 ML design rounds, 2 coding rounds, a hiring manager round. Took almost a month to finish that off.
Interview questions [1]
Question 1
How to model a signal and use that to improve ads ranking system
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.