TikTok Data Science Intern interview questions

Interviewed for 2025 summer. 2 rounds + HR + additional 4th round, failed in the last round. First round: talk about a data project + follow-up questions about model choices, one easy SQL, one product question. The second and fourth rounds were all product-based, asked about how to construct an A/B test and what metrics to use.

OA + Machine learning OA + Technical + Business round Pretty fast and smooth, questions asked are professional and straight into business. The interview results was also given within 2 days after the final round.