System Design Interview Questions
Study our database of real interview questions and answers verified by hiring managers and candidates.
- 554 questions
- 547 companies
- 25 roles
- Last updated Nov 2026
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Design a cashless candy dispensing machine.
2 years ago5 answersDesign a product recommendation system.


+23 months ago6 answersDesign and implement a ranked cache system.

2 months ago4 answersDesign Amazon Prime video.
2 years ago4 answers- Get your questions answered
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Design a RAG system for file search.
2 years agoDesign Slack.


+43 months ago3 answersDesign a rate limiter. Has video answer


+52 months ago13 answersDesign a file cache system.

a year agoDesign a web crawler. Has video answer


+35 months ago11 answersWhat metrics would you track to evaluate the performance of your ML pipeline?

3 months ago6 answersDesign a file upload feature for an AI chat application. Has video answer
5 months ago1 answerDesign a meditation app.
3 years ago11 answersDesign Cookie Clicker.

5 months agoDesign a denoising system for sounds.
a year ago3 answersDesign an end-to-end batching system for LLM queries. Has video answer
5 months ago1 answerDesign a system to upgrade hundreds of thousands of machines on the Moon.

2 years ago4 answers
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