Quality and frequency control for push notifications
Company: Meta
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Technical Screen
Scenario: Pushes drive re‑engagement but risk fatigue. Define quality metrics, tackle overload complaints, and build a per‑user cap algorithm that maximises opens without driving uninstalls.
Question 1: What metrics gauge notification quality? (Hint: open‑rate, downstream sessions, unsubscribe rate)
Question 2: Users complain about too many pushes—how improve? (Hint: frequency throttling, personalised content)
Question 3: How to set a daily push limit per user? (Hint: multi‑armed bandit, satisfaction model)
Quick Answer: This question evaluates skills in analytics and experimentation, specifically notification quality metric design, detection of user fatigue versus re‑engagement, causal and observational analysis of opt‑outs/uninstalls, and algorithmic design for per‑user caps.