Measure and mitigate notification spam
Company: Meta
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Technical Screen
Overview: Design a measurement plan to decide whether a social app's notification system is healthy or spammy, covering metrics, experiments, rollout and retiring harmful types. The hard parts are interference and fatigue in experiments, silent user loss through easy opt-outs, and conflicts between ecosystem and cohort results.