⏱ Interview Simulator

Design Under Pressure

Get a random system design prompt, a countdown timer, and a structured canvas. Fill in requirements, estimation, architecture, deep dive, and tradeoffs — then compare against a model solution and score yourself.

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10 Systems
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Choose Duration

Choose System (or Random)


Design Prompt

Design YouTube

35:00
Remaining
Review — Design Prompt

Design YouTube

Time used: 28:43

Rate yourself on each dimension. Be honest — the only way to improve is accurate self-assessment.

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Rate each section to see your overall grade.