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4,310 interview questions, answered.

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

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60 questions

  1. 1How would you authenticate reviews for Facebook Locals?HardProductSystem design· Meta
  2. 2Design a solution for borrowing and lending on Facebook.HardProductSystem design· Meta
  3. 3How would you build a Facebook product for blood donation?HardProductSystem design· Meta
  4. 4How would you build TinyURL?HardSystem designTechnical· Google, Meta
  5. 5Design a next word prediction system.MediumSystem design· Meta
  6. 6Design an Amazon price tracker.HardSystem design· Freshworks, Meta
  7. 7Design APIs for Facebook live commenting.HardSystem designTechnical· Meta
  8. 8Design an auto-complete feature.HardSystem design· LinkedIn, Meta
  9. 9Design an automated comment moderation system.MediumSystem design· Meta
  10. 10Design the backend of a feature that allows users to download their data from their Facebook account.MediumSystem design· Meta
  11. 11Design a birthday app for Facebook.MediumSystem design· Meta
  12. 12Design a DNS cache.MediumSystem design· Meta
  13. 13Design Dropbox.HardSystem design· Dropbox, Meta
  14. 14Design an evaluation framework for ads ranking.MediumAI MLProduct· Meta
  15. 15Design an events feature for a kids' messenger app.HardProductSystem design· Meta
  16. 16Design Facebook email.MediumProductSystem design· Meta
  17. 17Design Facebook Messenger.HardSystem design· Meta, Microsoft
  18. 18Design Facebook Newsfeed.HardProductSystem design· Meta
  19. 19Design Facebook to be more secure, private, and intimate.HardProductSystem design· Meta
  20. 20Design a fake news detection system.HardAI MLProduct· Meta
  21. 21Design a system to show the top 10 most frequently listened songs in the last 7 daysMediumSystem design· Meta
  22. 22Design Google Drive.HardSystem design· Meta, Microsoft
  23. 23Design Instagram.HardProductSystem design· Amazon, Instagram
  24. 24Design a language learning app for Meta.HardSystem design· Meta