I applied online. I interviewed at TikTok (San Jose, CA) in Feb 2026
Interview
I had two rounds of interviews. The first one asked about my research project, gave a Leetcode SQL problem, and also asked about social media usage and opinions. The second one again asked about research and some practical questions like what kind of metric would you choose to measure whether the answer provided by AI in the Tiktok app is useful to the users.
I applied online. I interviewed at TikTok (London, England)
Interview
one medium level sql test and an open question
Since i'm not familiar with business context(though i actually spent time preparing AB test and causal inference), i didn't get what i should answer.
Interview questions [1]
Question 1
if tiktok shop is going to launch in Netherland, how to evaluate it before AB test
There was a recruiter screen. After the screen, I did a sql coding exercise. Afterwards, I had a statistical interview. The last round was how I would run and design an experiment.
1. Phone Screen 2. First Round Interview with Coding and Resume Questions
3. Second Round Interview. The interviewer asked easy coding questions but extremely hard ML questions and ask very specific questions on your previous internships experience.