Does the interviewer see my drawing?

It reads the structure of what you draw rather than a picture: each labelled box, text note and arrow, and which components an arrow connects. It receives that description when you pause, so its follow-ups can point at a specific component or connection.

Drawing is how you show the architecture, and the report looks at it together with what you say. You can also explain parts of the design aloud, as in a real interview.

How is the design scored?

After the interview, the report scores each skill of the system design rubric, such as requirements, estimation, APIs and data, architecture, reliability and trade-offs, with the evidence from your session.

EngMock

Feature Deep Dive

Interactive Component-Level Feedback

A generic chatbot cannot see your architecture. EngMock’s interviewer reads the boxes, labels and arrows on your whiteboard as you draw, and asks about the specific components and connections you chose.

Experience Live Feedback Browse Interview Library

Why Component-Level?

In a real Staff-Engineer level interview, the interviewer doesn't just look at the final picture. They point to a specific edge—like the connection between your API Gateway and your Database—and ask: "What happens if this partition fails?"

EngMock works the same way. The interviewer receives your diagram as components and connections, so it can ask about one of them: the cache in front of a database, the queue between two services, a single point of failure.

Interactive Architecture Evaluation

A diagram is only as good as your answers about it. The interviewer pushes on the parts you drew.

✓ Asks about bottlenecks and failure modes in the architecture you actually drew.
✓ Probes your trade-offs, such as consistency versus availability, and the report scores them.
✓ Asks you to back storage and capacity choices with your own back-of-the-envelope estimates.

Whiteboard feedback FAQ

Does the interviewer see my drawing?: It reads the structure of what you draw rather than a picture: each labelled box, text note and arrow, and which components an arrow connects. It receives that description when you pause, so its follow-ups can point at a specific component or connection.
Do I have to draw?: Drawing is how you show the architecture, and the report looks at it together with what you say. You can also explain parts of the design aloud, as in a real interview.
How is the design scored?: After the interview, the report scores each skill of the system design rubric, such as requirements, estimation, APIs and data, architecture, reliability and trade-offs, with the evidence from your session.

Master Your Next AI System Design Interview

Pick one of 43 system design scenarios, draw your architecture while you talk, and see in the report which parts of your design held up.

Start Your Practice Session