Pinterest·Machine Learning Engineer

Pinterest Machine Learning Engineer interview experience

No offer

Hard

Negative

Palo Alto, CAPosted Jul 2026 · Candidate report, summarized by Dataford

I went through a pretty short but rough loop.

After an initial conversation that didn’t feel collaborative—when I tried to walk through projects, the interviewer seemed unwilling to listen—I moved into a technical session focused on machine learning. They asked me a set of ML questions that leaned into core theory, including gradients vanishing and ensemble methods like bagging and boosting.

There was also a LeetCode-style problem for about 30 minutes. The whole thing ended quickly, and I got an HR rejection message roughly half an hour after the interview. It wasn’t just the result that made it feel difficult; the tone early on set me

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