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. 1105Teleport publishes a Go service exercise that reads and changes Kubernetes Deployment replica counts, with design, delivery and testing requirements. This is a public sample, not evidence that our exact prompt was asked in a past interview.HardCodingSystem design· Teleport
  2. 1106The public Integrations Developer challenge includes a command-line client for listing organization vulnerabilities through the Contrast API. It is not verified Security Engineer interview evidence.MediumCodingTechnical· Contrast Security
  3. 1107Airbnb checkout nudge: the full A/B designData· Airbnb
  4. 1108Bagging vs boosting vs Random ForestData· Amazon
  5. 1109BiLSTM vs TransformerMediumData· Amazon
  6. 1110Dimensionality reduction methodsData· Amazon
  7. 1111Handling imbalanced dataData· Amazon
  8. 1112Netflix homepage experiment with conflicting metricsData· Netflix
  9. 1113RAG vs fine-tuningMediumData· APAI PM/DS interview prep
  10. 1114Transformer vs gradient-boosted trees on tabular dataData· AAAmazon AS depth
  11. 1115Context windows and their practical limitsMediumAI ML· Rr/ExperiencedDevs
  12. 1116Why divide by sqrt(d_k) in scaled dot-product attention?MediumAI ML· OMOpenAI MLE
  13. 1117Implement a BPE tokenizer from scratchMediumCodingSystem design· OpenAI
  14. 1118Implement an async task queue with a concurrency limitMediumCodingSystem design· Neon
  15. 1119Implement beam search decodingMediumCodingSystem design· PAPerplexity AI
  16. 1120Implement FlashAttention-style tiled attentionHardCodingSystem design· Mistral AI
  17. 11211M users drop off at 6 monthsMediumData· Netflix
  18. 1122Bias-variance trade-offData· Amazon
  19. 1123Causal inference without randomizationData· Airbnb
  20. 1124Company vs client interests misalignedData· Amazon
  21. 1125Compute the lift, SE and CI: ship or not?Data· Airbnb
  22. 1126Cumulative weekly retention (SQL)MediumData· Pinterest
  23. 1127Delivered something customers didn't know they neededHardData· Amazon
  24. 1128Design and evaluate a book recommenderData· Amazon