System Design Interview Trainer

Practice one case, get structured feedback, improve the next round.

This MVP gives you one interview prompt, an architecture board for your answer, and rubric-based feedback across the core system design dimensions.

Target flow

Read the case, build the board, click Evaluate.

45:00

Ready

0 words

Evaluation dimensions

1. Task formalization2. System boundaries, scenarios & public APIs3. Data flows & main components4. Conceptual schema (components with classes + data model)5. Real schema (concrete technologies and why)6. Load and sizing+ additional questions

Interview workspace

Choose a case from the selector or start a random case. The Excalidraw board will open with the prompt, interview structure, and base architecture primitives.