TikTok·Data Scientist

TikTok Data Scientist interview experience

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San Jose, CAPosted Mar 2026 · Candidate report, summarized by Dataford

My first round started with a deep dive into my research work and the specific angle I’d studied.

From there, the interviewer moved into coding and product-adjacent thinking: I had a LeetCode SQL challenge, and the conversation also touched my perspectives on social media usage and opinions. It felt like they were trying to understand not only my technical background but also how I’d apply it to product contexts.

A second round continued with the research theme and then became more practical. I got asked what metric I would use to judge whether an AI answer inside the TikTok app is genuinely useful to users, and we discussed how to define success in a way that would reflect real user

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