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Interview loop

Software engineer interview practice

Practice the rounds in a real software engineering loop: a timed DSA phone screen, a debugging round in a broken codebase, and a system design discussion, all with an AI interviewer that reacts as you work.

Start freeNo credit card required.

The full loop, not just one round

A software engineering offer rarely comes down to one interview. Most loops run four to six rounds: a phone screen, one or two deeper technical rounds, sometimes system design, and a practical or debugging round. Each one is scored differently, and preparing for only the algorithmic part leaves the rest untested.

Rounds you can practice here

An AI interviewer runs each of these, by voice or text, and follows what you do instead of waiting for a final answer.

Phone screen

A timed DSA round across 170+ scenarios in 18 patterns.

Debugging

A broken codebase and a failing test you diagnose and fix.

System design

An open-ended architecture discussion, trade-offs included.

See both the debugging and case lab formats on the rounds page.

Where most candidates lose points

Most engineers do not fail interviews because they cannot code. They fail because they stay quiet while thinking, start typing before they understand the problem, or cannot explain the complexity of what they just wrote. A scored rubric after each session covers communication, problem solving, and code quality, not just whether the tests pass, so you know which of those to fix before the next one.

See where you actually stand.

One interviewer, a real editor, and a score you can act on.

Voice or text

Talk through your approach out loud, or type it.

Scored like a real loop

Communication, problem solving, and code quality, not just passing tests.

Free to start

8 full sessions a month on the free plan. No card.

Start free

Frequently asked questions

Is this useful for frontend, backend, or full-stack roles?

Yes. The DSA patterns, debugging rounds, and system design drills are general to software engineering rather than tied to one specialization. If you want to build language fundamentals first, the free Python course runs in your browser.

How long is a session?

Long enough to work through a full problem: read it, ask clarifying questions, write and run code, and get a scored rubric at the end.

Can I see my progress across sessions?

Yes. Session history and per-pattern progress are part of every account, so you can see which rounds and patterns need more reps before a real loop.