Learn Practice Mock

SR

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Mock Interview

Run a real system design round

A timed 45-minute interview. One problem you haven't seen, an interviewer who pushes back, and an honest verdict at the end.

Target level

Topic focus (optional)

45 minutes. One random problem. You won't see it until the round starts.

What a mock round looks like

45 minutes, one problem

A random problem you haven’t seen yet. The clock is real — pace yourself.

The candidate drives

You get a one-line scenario. You ask for scale, latency, SLOs — the interviewer answers when asked, never volunteers.

Pushback included

Expect follow-ups: “why this DB?”, “what at 10×?”, “where does this break?”. Just like the real loop.

Honest verdict at the end

Strong Hire → No Hire, calibrated to your target level. Three strengths, three gaps, evidence-backed.

Past rounds

No completed rounds yet. Your debriefs will live here.

View history →

Warm up first

Run guided practice or skim a reading path before the rep.