RejectedTechnical Screen

A Brutal CRR SQL Question with LAG and 4-5 CTEs

GoogleData Scientist · Technical Screen · Oct 2025

This isn't a super fresh write-up, but while I was prepping I noticed there weren't many Data Scientist interview experience posts here, so I'm sharing mine. First was the HR phone screen — we talked a bit about projects I'd worked on before and they asked about my SQL and Python experience. I passed and got scheduled for the first round. The first round had two sessions: they said it would be on…

Shared by a candidate · reported Oct 2025. Interview formats change; use it as a guide, not a script.