System design practice with a canvas, not a whiteboard.
Drag-and-drop real building blocks against scenario prompts, then get a candid architecture review scored against what you actually built.
SYSTEM DESIGNSystem Design Practice, built to actually help
Whiteboard sketches vanish the moment the session ends.
A live drag-and-drop canvas with real building blocks — components you snap together, not lines you draw.
No one tells you if your design would actually survive.
Every submission gets a candid AI architecture review against the scenario's real constraints.
Practice scenarios feel disconnected from real interviews.
A scenario catalog spans easy, medium and hard prompts, with hints when you're stuck.
You can't tell if you're improving across attempts.
Track total attempts, scenarios tried against the full catalog, and your difficulty split.
Get started in three steps
Pick a scenario
Choose a prompt by difficulty, read the constraints and hints.
Build on the canvas
Drag and drop components to design the architecture live.
Get an architecture review
A candid AI review of what you built, mapped to the scenario.
System Design Practice, answered
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