LeetCode for System Design
Practise system design interviews out loud. Pick a real question, talk through your design, and get feedback on every step.
See how it worksReal questions from real interviews
Pick one that big tech companies ask. Each starts the way the interview does: a short brief and a blank page.
Meta asked this one.
Say it out loud. Watch it draw.
A real answer to the URL shortener, spoken start to finish. The diagram builds itself as it is said.
No drawing lines, no resizing boxes. Just talking.
Feedback on every step
After each step, your answer is checked against the question’s criteria. You see what you covered and what’s missing, while it’s still fresh.
Nailed the short codes. What about collisions?
Trusted by engineers at
ByteDance, TikTok, Google, Squarepoint, NUS, A*STAR, and more.
From first-job hunts to staff-level loops.
Your turn
Try the URL shortener free. Talk it through, then see your feedback.
The seat is yours.