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. 2857Detect and handle hallucinations in LLM outputsMediumCodingSystem design· AEAI Engineer / Eval roles
  2. 2858Implement a Transformer block from scratchHardCodingSystem design
  3. 2859Implement backprop for a tiny network (OpenAI)HardCodingSystem design· OpenAI
  4. 2860Implement scaled dot-product self-attentionMediumCodingSystem design
  5. 2861Implement temperature, top-k, and top-p samplingMediumCodingSystem design
  6. 2862In-memory file system coding challenge (Perplexity)MediumCodingSystem design· PAPerplexity AI
  7. 2863LRU cache implementation (OpenAI onsite)EasyCodingSystem design· OpenAI
  8. 2864Mistral 60-minute live coding (algorithm + practical AI utility)MediumCodingSystem design· Mistral AI
  9. 2865Write a training loop with gradient accumulation and mixed precisionMediumCodingSystem design
  10. 2866Given an array of integers, return the pairs with the minimum absolute difference between them.MediumCoding· Microsoft
  11. 2867Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].MediumCoding· Microsoft
  12. 2868Coin ChangeMediumCodingTechnical· Apple, Citi
  13. 2869How do you collaborate with engineers?MediumBehavioral· Blend, LendingClub
  14. 2870How do you collaborate with marketing?MediumBehavioral· LendingClub
  15. 2871How would you collaborate with a blind teammate?MediumBehavioral· Microsoft
  16. 2872How do you collect user requirements?MediumDataProduct· Capital One
  17. 2873What are common linear regression problems?MediumDataTechnical· Amazon
  18. 2874Tell me about a time when you had difficulty communicating with key stakeholders and how you aligned with them.MediumBehavioral· Google
  19. 2875Which company do you think excels in product marketing?MediumBehavioral· Coda
  20. 2876What would you do if a competitor launched a product before you?MediumProduct· One Acre Fund
  21. 2877Explain the most complex product you have built.MediumBehavioralTechnical· Google, Meta
  22. 2878Given n employees and an expansion rate r, find the number of employees after t years.EasyTechnical· Salesforce
  23. 2879Describe why a video can be compressed significantly more than a picture in relative size.MediumTechnical· Google
  24. 2880What is the concept of scalability?MediumTechnical· Amazon