Pinterest·Machine Learning Engineer

Pinterest Machine Learning Engineer interview experience

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United StatesPosted Jun 2026 · Candidate report, summarized by Dataford

My process started with a recruiter phone screen that mixed behavioral questions with some basics.

It was a little different from what I expected, since the technical part wasn’t just “tell me about your background”—I had to be ready to talk through foundational concepts too.

Soon after, I had a technical round that centered on implementing sparse matrix operations. I had not realized how specific it would be: the task involved getting the logic right for sparse structure, and it was coding-heavy. What surprised me was how close the coding problem felt to something I’d recently practiced in an algorithms-focused section.

The onsite then added more DSA-style challenges and a machine

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