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.

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4,310 questions

  1. 1321Merge intervals plus ML fundamentals probeMediumData· Pinterest
  2. 1322Parse data and compute statisticsMediumData· Scale AI
  3. 1323Prompt vs fine-tune vs RAG for a search-and-answer systemMediumData
  4. 1324Prove 1-NN error is at most twice the Bayes errorData· Microsoft
  5. 1325Push notifications before conversionMediumData· Uber
  6. 1326Sequential tests and simultaneous experimentsData· Netflix
  7. 1327Stadium with 3+ consecutive high-attendance days (SQL)MediumData· Netflix
  8. 1328Statistical methods you've actually usedData· Amazon
  9. 1329Supervised vs unsupervised vs reinforcement learningData· Amazon
  10. 1330The 15-20 minute science talkData· Amazon
  11. 1331Third transaction of every user (SQL)MediumData· Uber
  12. 1332Top 3 unique salaries per department (SQL)MediumData· Netflix
  13. 1333Two SQL plus one Python on trust & safety dataMediumData· Pinterest
  14. 1334Why that loss function?Data· Amazon
  15. 1335Your favorite ML paperData· Amazon
  16. 1336Tell me about a time data was the north star metric and how the analysis was performed.MediumDataBehavioral· Amazon
  17. 1337What data points would you use to define a product recommendation engine?MediumDataTechnical· Shopify
  18. 1338Create geographic and demographic dashboards for weekly, monthly, and yearly analytics using order data (100M daily records for 5 years) and customer data (1B customers).HardDataSystem design· Amazon
  19. 1339Design a database schema for a pizza ordering systemMediumTechnical· Amazon
  20. 1340Tell me about a time when you dealt with buggy code in production that couldn't be fixed with a rollback.HardBehavioral· Hubspot
  21. 1341How would you debug a decline in sales and decide whether to build a new feature or not?MediumDataProduct· Shopify
  22. 1342How would you debug a failing NUC in a data center?MediumTechnical· Google
  23. 1343Debug a metric that was off by x percentage.MediumDataCoding· Databricks
  24. 1344How would you decide ad placement on Pinterest?MediumDataProduct· Pinterest