Question bank

4,310 interview questions, answered.

Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.

Easy 190Medium 2,498Hard 982
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4,310 questions

  1. 1441Design a denoising system for sounds.HardSystem design· Google
  2. 1442Design a digital library to encourage kids to read.MediumProduct· Microsoft
  3. 1443Design a distributed database system, for example, Kafka.HardProductTechnical· Confluent
  4. 1444Design a distributed file system.HardSystem design· Databricks, Google
  5. 1445Design a distributed logging system.HardSystem design· Amazon, Goldman Sachs
  6. 1446Design a DNS cache.MediumSystem design· Meta
  7. 1447Design the leaderboard for Dream11 fantasy gaming with 100,000 registered teams.HardSystem design· Amazon
  8. 1448Design Dropbox.HardSystem design· Dropbox, Meta
  9. 1449Design dynamic pricing for Lyft.HardDataProduct· Lyft
  10. 1450Design an educational product for YouTube.HardProduct· Google
  11. 1451Design an elevator algorithm to pick up guests.MediumDataTechnical· AADP, Google
  12. 1452Design an email application for the blind.HardBehavioralProduct· Microsoft
  13. 1453Design an emergency service system for Alexa for a break-in scenario.HardProductSystem design· Amazon
  14. 1454Design an evaluation framework for ads ranking.MediumAI MLProduct· Meta
  15. 1455Design an events feature for a kids' messenger app.HardProductSystem design· Meta
  16. 1456Design Facebook email.MediumProductSystem design· Meta
  17. 1457Design Facebook Jobs.MediumProduct· Meta
  18. 1458Design Facebook Messenger.HardSystem design· Meta, Microsoft
  19. 1459Design Facebook Newsfeed.HardProductSystem design· Meta
  20. 1460Design a product for Facebook to enable charity.MediumProduct· Meta
  21. 1461Design a product for Facebook for the Olympics.HardProduct· Meta
  22. 1462Design Facebook to be more secure, private, and intimate.HardProductSystem design· Meta
  23. 1463Design a fake news detection system.HardAI MLProduct· Meta
  24. 1464Design a fashion product for Facebook.MediumProduct· Meta