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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2,498 questions

  1. 313Critique the Spotify app.MediumProduct· Spotify
  2. 314How many people are on Facebook at any given time?MediumProduct· Amazon
  3. 315How many people are listening to songs on Spotify right now?Medium· Spotify
  4. 316What is the current strategy of 15-minute delivery apps?MediumProduct· Google
  5. 317Your largest customer is advocating for a new feature not in your roadmap. What do you do?MediumBehavioral· Google, OpenAI
  6. 318What is the customer and business value of Capital One shopping?MediumProduct· Meta
  7. 319Cycle Detection in Package Manager.MediumCoding· Adobe
  8. 320How many 'likes' happen on Facebook each day?Medium· Google
  9. 321How many 'likes' happen on Instagram each day?MediumProduct· Amazon
  10. 322How many tweets are tweeted every day on Twitter?Medium· Twitter
  11. 323Cohort funnel in pandasMediumData· PDPinterest DS take-homes
  12. 324Merge intervals plus ML fundamentals probeMediumData· Pinterest
  13. 325Parse data and compute statisticsMediumData· Scale AI
  14. 326Prompt vs fine-tune vs RAG for a search-and-answer systemMediumData
  15. 327Push notifications before conversionMediumData· Uber
  16. 328Stadium with 3+ consecutive high-attendance days (SQL)MediumData· Netflix
  17. 329Third transaction of every user (SQL)MediumData· Uber
  18. 330Top 3 unique salaries per department (SQL)MediumData· Netflix
  19. 331Two SQL plus one Python on trust & safety dataMediumData· Pinterest
  20. 332Tell me about a time data was the north star metric and how the analysis was performed.MediumDataBehavioral· Amazon
  21. 333What data points would you use to define a product recommendation engine?MediumDataTechnical· Shopify
  22. 334Design a database schema for a pizza ordering systemMediumTechnical· Amazon
  23. 335How would you debug a decline in sales and decide whether to build a new feature or not?MediumDataProduct· Shopify
  24. 336How would you debug a failing NUC in a data center?MediumTechnical· Google