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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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982 questions

  1. 313Imagine you are a data scientist for Instagram. How would you balance ads and follower posts and how would you monitor its effectiveness.HardData· Meta
  2. 314You're a PM at Bing. What would you do to take over 5% of Google's search market share?HardDataProduct· Microsoft
  3. 315Design a solution for borrowing and lending on Facebook.HardProductSystem design· Meta
  4. 316How would you bring Waymo to market in five years?HardProduct· Google
  5. 317How would you build an ad platform for Robinhood?HardProduct· Robinhood
  6. 318How would you build a tool to authenticate products sold on TikTok Shop?HardProduct· TikTok
  7. 319Build a Basic Regex ParserHardCoding· Adobe, Apple
  8. 320How would you build a Facebook product for blood donation?HardProductSystem design· Meta
  9. 321Build a new feature for natural disaster response.HardProduct· Meta
  10. 322Build a Google campus on the moon.HardProduct· Google
  11. 323How would you build Google Wing?HardProduct· Google, Google X
  12. 324How would you build an object detection system to identify and locate flowers in images?HardAI ML· Apple
  13. 325How would you build a system on a ticketing website to manage high traffic during simultaneous ticket purchases?HardProduct· Google, Meta
  14. 326How would you build TinyURL?HardSystem designTechnical· Google, Meta
  15. 327How would you build a recommendation system for an e-commerce store?HardDataTechnical· Amazon, Lyft
  16. 328How would you build a monitoring device for elderly people?HardProduct· Google
  17. 329Design a self-driving car solution for kids.HardProduct· Google
  18. 330Debug a transformer with 4 failing tests, then train a classifier (OpenAI)HardCodingSystem design· OpenAI
  19. 331Debug an actual LLM inference step in a 20–30 line Colab skeleton (Anthropic)HardCodingSystem design· Anthropic
  20. 332Design a centralized ML training and management platformHardCodingSystem design· MEMeta engineer mock
  21. 333Design a distributed training pipeline for an LLM with fault toleranceHardCodingSystem design· Anthropic
  22. 334Design a fine-tuning platform (instruction / PEFT / RLHF)HardCodingSystem design· OpenAI
  23. 335Design a RAG system with evaluationHardCodingSystem design· OpenAI
  24. 336Design a system for safe deployment of AI models in productionHardCodingSystem design· Anthropic