Technical Screen

SQL and Product Sense on a Group Call Feature

MetaData Scientist · Technical Screen · Dec 2025

The interviewer was a very energetic and friendly woman, and everything she asked me was about group calls. The premise: Messenger has groups, but no group call feature. The first SQL question was pretty common, but the second one I'd never seen before. What percentage of today's active "gb" users had more than 50 call records in the previous 7 days (counting both calls made and calls received)?…

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