DesignDojo
Practice system design
out loud, on a whiteboard.
A mock interview where you talk and draw at the same time, with an interviewer that watches the canvas as you build it.
Start a mock interviewDraw with a typed palette
Every component you place is structured data — load balancer, Postgres, Kafka. No sketch recognition, no ambiguity.
Talk through it out loud
The interviewer listens while you think, and waits when you're drawing instead of talking over you.
It reacts to your diagram
Connect a client straight to the database and you'll be asked about it — the moment you draw it.