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. 1129Design and evaluate an A/B testData· Amazon
  2. 1130Disagreeing with your managerData· Netflix
  3. 1131Driver fraud: SQL plus modeling pipelineData· Uber
  4. 1132Investigate a 15% CTR dropHardData· Netflix
  5. 1133Know your own project inside-outMediumData· Duolingo
  6. 1134Measure engagement for a productivity appMediumData· Netflix
  7. 1135Missing a long-term commitment (Ownership)Data· Amazon
  8. 1136Outside-the-box simplification (Invent & Simplify)Data· Amazon
  9. 1137Prove logistic loss has a global minimumData· Amazon
  10. 1138Prove MSE is non-convex for logistic regressionData· Microsoft
  11. 1139Technical deep-dive on an issue (Dive Deep)HardData· Amazon
  12. 1140The project you're most proud ofData· Amazon
  13. 1141Urgent decision with incomplete information (Bias for Action)MediumData· Amazon
  14. 1142Why is a GPU faster than a CPU? Why is NumPy faster than a list?Data· Microsoft
  15. 1143Your ML approach didn't workMediumData· Microsoft
  16. 114401 Matrix: find the nearest zero for every cellMediumCoding· Adobe, Oracle
  17. 1145Define a 10-year roadmap for Google Maps.HardProduct· Google
  18. 1146How would you 10x Duolingo?HardProduct· DoorDash, Google
  19. 1147Devise A/B tests to reduce user frustration with Google Maps.HardData· Google
  20. 1148What two new features would you add to a car garage?MediumProduct· Google
  21. 1149As a food delivery company, how would you address increased delivery times?MediumDataProduct· DoorDash, Google
  22. 1150How would you address negative feedback on Chrome's video ad auto-play?MediumDataProduct· Google
  23. 1151How would you address a performance decline in a program?MediumDataProduct· Amazon, Slack
  24. 1152What's the effect of adjusting an LLM's context window size?MediumAI MLTechnical· OpenAI