Learned about it from a career fair in my school. Asked some questions. Not very hard. Some tricky questions are not easy to answer. Mostly about the resume. HR is very friendly.
Total 3 rounds interview, the first two is for techinical, the third on is for HR; consider about your projects, experience and some behaviour questions, not much stats questions or coding questions
Interview questions [1]
Question 1
To tell one of the most attractive experience on your resume
I applied online. I interviewed at ByteDance (Xangai, Xangai) in Dec 2025
Interview
First round technical interview with a senior member from the team, 45 mins equally divided into resume questions, 1 sql problem involving window function and ctes, and discussion around statistical concepts/scenarios.
HR reach out to me invite me to take a Data Scientist interview, and scheduel an interview for me. I only took one interview asking about project-related questions，and some questions about statistics, experimentation, and modeling，and one open-ended question.
Interview questions [1]
Question 1
How to estimate TikTok's daily advertising revenue without access to internal data?