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Expert-Curated Q&A Library
1600+ real interview questions organized by topic, difficulty, and company — all curated by ex-FAANG engineers.
Explain the difference between useEffect and useLayoutEffect.
Design a rate limiter for a distributed API gateway.
Implement a self-attention mechanism from scratch.
Company-Specific Guides
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Just got my Google L3 offer bois!! IM NOT UNEMPLOYED ANYNMORE LFG!
Congrats! 🙌 Pro tip for anyone prepping for Google: make sure to grind graph traversals, legit every problem they ask is just BFS/DFS...
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If your submission is verified and published, get rewarded $5–$30 USD per question.
Submit Your Questions
Just had an interview at Google, Meta, or any tech company? Submit the questions you were asked — anonymously if you prefer.
We Verify Everything
Our team of 25+ ex-FAANG engineers cross-references, fact-checks, and crafts expert-level model answers for every accepted question.
You Get Rewarded
If your submission is verified and published, get rewarded $5–$30 USD per question.
Get Rewarded for Your Contributions!
The harder and rarer the question, the more you earn. Every accepted submission is reviewed by our ex-FAANG engineering team.
Easy / Medium Question
Hard / System Design
How Payouts Work
@404_404
Submitted 2 hours ago
"How would you design a distributed rate limiter that handles 1M requests/sec across multiple data centers?"
@unemployed_asian
Accepted 1 day ago
"Walk me through how you would design an event-driven notification system that handles millions of users across multiple regions."
@doctorwho
Accepted 3 days ago
"Explain how TikTok's recommendation engine balances exploration vs exploitation in their For You feed."