Mock Coding, System design and Behavioral interviews with an AI interviewer that listens, probes and hints like a good one. Then an honest verdict on whether you’d pass at your level.
It expects clarifying questions, waits while you think aloud, pushes back on hand-waving, and hints when you’re stuck without handing you the answer.
Strong Hire to No Hire against the bar for 0–2, 3–7 or 8+ years, a score for every skill, and the three things to fix first.
Talk it through like the real call, or type when you can’t. Same interviewer, same report. Free includes one voice and one text interview a month.
How it works
Upload your resume, confirm the role and level we read from it, and pick a round. Then you’re in, with an interviewer who asks, listens and follows up.
Every interview opens on your own work, the way a real interview does: what you built most recently, why you chose that stack, what broke, what you’d change.
Thinking aloud is the job, so it never cuts you off mid-thought. It keeps time, and once your first problem passes its tests it has a second one ready.
Ask when you’re stuck. The first hint is a nudge, the next is firmer, and none of them hand you the solution. The report counts them.
Python, Java, C++, JavaScript or Go. Run the examples, submit against hidden tests. Data Platform interviews add a SQL problem.
Questions are drawn from the ones you haven’t had yet, for your round, role and level, so a second attempt is a new interview.
Your code and progress save as you go. Rejoin within 24 hours and the interviewer carries on. It doesn’t count as another interview.
Rounds
Each opens with your resume and ends with time for your questions, like the real thing. Times are a plan, not a cut-off: finish early and you move on.
Two problems to solve, the second opening once the first passes its tests. Clarify, share an approach, code it, run the tests, and talk through the complexity.
An open prompt, from requirements and APIs to a deep dive, while the interviewer pushes on scale and trade-offs.
Stories from your work, followed up the way a hiring manager would, until the detail runs out.
The report
A mock interview that says “great job” every time is useless. Ours says whether you’d pass at your level, and why, in the words an interviewer would use in the debrief.
On Free you see the verdict. The rest of the report comes with any paid plan.
Raj, 41:12
It passes. Would O(n²) survive n = 10⁵?
You, 41:40
No, that’s ten billion steps. If I sort by start first, I can merge in one pass.
Coding Backend Engineer, 3–7 yrs
61 min, by voice
Verdict at 3–7 yrs
Lean No Hire
Strong communication and clean code, but at this level the optimal approach should come without a hint, and the complexity check should come before the code, not after it.
Scores
Fix these first
Check complexity against the constraints before you code.
Drill: For your next five problems, write the bound and the largest input on line one.
Start from the sorted view on interval problems.
Drill: Merge Intervals, Meeting Rooms II and Non-overlapping Intervals, 20 minutes each.
Name the edge cases out loud, then test them.
Drill: Before each Run, say which case each example covers.
The rounds keep their shape; the questions and the grading move with you. Both are read from your resume, and you can change them any time.
0–2 yrs
Student / Entry-level
3–7 yrs
Mid-level
8+ yrs
Senior / Staff+
Pricing
Free gives you one voice and one text interview every month, in every round and every role, each graded with its verdict at your level. Paid plans open the full report behind every verdict, add voice interviews to spend on any rounds you like, and make text unlimited. There’s never a per-minute meter running while you think.
No, it’s an AI you talk to, or chat with. It behaves like a good human interviewer: it expects clarifying questions, waits while you think aloud, pushes back on weak reasoning, and offers hints that get stronger if you’re stuck, without ever handing you the solution.
Voice is the realistic one: you think out loud, the interviewer listens, waits while you think, and speaks back, just like the real call. Text is the same interviewer, questions, editor, whiteboard and report in a chat, for the library, the commute or a noisy flat. Free includes one voice and one text interview a month, each with its verdict; paid plans add the full report, more voice interviews and unlimited text.
A laptop or desktop with a recent Chrome, Edge, Safari or Firefox, and 35–60 minutes (you can adjust each part a little before you start). For voice, a microphone and a quiet room. The interview room doesn’t work on phones: coding on a phone isn’t realistic practice.
It’s graded against the bar for your level, not against your feelings. A 3–7 year engineer who needs a hint to find the optimal approach will read “Lean No Hire”, with the reason and a drill. That’s the point: better to hear it here than in a rejection email.
Python, Java, C++, JavaScript and Go, and you can switch mid-problem. Data Platform interviews also include a SQL problem.
Not until you’ve seen the rest. Questions are picked from ones you haven’t had, for your round, role and level.
One voice and one text interview a month, in any round, with the same interviewer as every plan. Each one is graded, and you see the verdict at your level. The full report (why, a score for every skill with the moments behind it, the three things to fix first, the reference solutions, the transcript and the recording) comes with any paid plan, which opens every report you’ve had.
Each plan gives you a number of voice interviews a month, and you choose how to spend them: any mix of Coding, System design and Behavioral. Your allowance resets on the first day of each billing cycle (on Free, the 1st of the month), and unused interviews, voice or text, don’t carry forward. On Max you can also buy extra voice interviews in packs of 5, 10 or 20; they’re used once the month’s run out, and never expire.
Your code and progress are saved as you go. Rejoin within 24 hours and the interviewer picks up where you left off. It doesn’t count as another interview.
They’re used to run your interviews and write your reports, and nothing else. We don’t sell them or share them with employers. Delete your recordings or your whole account any time from Settings. Details are in the privacy policy.
Cancel any time from Billing; you keep your plan until the end of the period you paid for. If you’re charged and haven’t taken a voice interview or opened a report since (text interviews don’t count), ask within 14 days for a full refund. After one voice interview or one opened report there’s no refund, in full or in part. An interview pack is refunded in full within 14 days if none of its interviews has been used. See the refund policy.
Upload your resume, pick a round, and start. One voice and one text interview every month are on us.