Technical mock interview — a 45-minute peer-matched coding round.

The 5-axis feedback rubric

Every mock produces a scored entry on each axis. Patterns in your weakest axis become the focus of your next prep cycle.

Problem framing

Did you restate the problem, confirm constraints, and check edge cases before coding?

Approach and trade-offs

Did you articulate at least two approaches with their time/space costs before committing?

Correctness

Does the solution handle happy path, empty input, single-element, and adversarial inputs?

Code quality

Is the code readable, idiomatic, and organized into coherent helpers?

Communication

Did you narrate your reasoning, respond to hints, and collaborate rather than monologue?

Session structure

1. 00:00Warm-up. Share target company, pattern focus, and one thing you want the interviewer to probe.
2. 05:00Problem stated. Clarify constraints, restate the problem, and confirm edge cases aloud.
3. 12:00Approach discussion. At least two candidate approaches with time/space trade-offs.
4. 18:00Code the solution while narrating.
5. 35:00Test with happy path, edge, and adversarial inputs.
6. 40:00Live feedback on the 5 rubric axes + rubric scores.

Frequently asked questions

How are peers matched?

Peers are matched by target company tier and pattern focus. A Google-L4 candidate drilling graph-BFS/DFS is paired with someone on a similar track. Match time is usually under 48 hours; median is 18 hours.

What happens in a 45-minute technical mock?

5 minutes to warm up and share context, 35 minutes on the problem (clarify → approach → code → test), and 5 minutes of live feedback. You each take a turn as interviewer and candidate.

How is the problem chosen?

The problem is drawn from your diagnostic weak-pattern set. If your diagnostic flagged interval-sweep and monotonic-stack as weak, your mock problem will be one of those — not a random question.

What feedback do I get?

A scored rubric across the 5 axes (problem framing, approach, correctness, code quality, communication) plus a free-text note from your peer. Scores roll up into your prep dashboard.

Is the technical mock included in $19/mo?

Yes. Peer-matched technical mocks are included with no session cap. Fair-use applies on the peer pool — if you're requesting a 4th mock in a week, match time lengthens.