Google·Data Scientist·Onsite - Product Sense / Strategy
May 2026
Big, sprawling product-analytics case for a DS role at Google, centered entirely on Gmail user segmentation. One question but it had like five parts and they expected you to go deep on all of them. The privacy/fairness angle at the end was the part I least prepared for.
- Gmail wants to build actionable user segments to drive product improvements and lifecycle marketing. How would you design the segmentation scheme, validate it, run experiments to measure lift, and connect it back to the product roadmap? You can only use behavioral metadata and aggregate mailbox state, no email content.
“This was a monster of a question.” The rest of the author's notes on Data Scientist interview at Google, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.
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