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Frontend ArchitectureHard~30 minPro

Designing an Event-Driven Notification System

What to Expect

System Design Discussion

The interviewer asks architecture questions and probes your decisions with follow-ups.5 signals evaluated

Coding Follow-up

Implement a solution based on your discussion. Full editor with test cases. ~5 min

Interview Feedback

Numeric score, signal breakdown, staff engineer perspective, and strong candidate comparison.

Signals Tested

  • Design a pub/sub event bus for decoupled component communication
  • Implement priority-based notification handling
  • Handle subscription cleanup to prevent memory leaks
  • Balance real-time delivery with UI performance via batching

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