Pinterest·Data Scientist

Pinterest Data Scientist interview experience

Posted Oct 2021 · Candidate report, summarized by Dataford

My DS screen at Pinterest felt very analytics-oriented rather than algorithm puzzle-focused.

In the technical phone screen, I started with SQL on two tables filtered to year-to-date and restricted to web requests from iPhone.

Because a user could have multiple sessions, the SQL hint pushed me toward using DISTINCT, and the questions followed up as I refined how I thought about the data. After SQL, I moved into Python for plotting user growth over time. The follow-ups challenged me on choices like histogram versus time series, and I also had to handle a holiday outlier so the trend wasn’t misleading. The discussion then connected back to a campaign-effect style question.

It was a

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