◆Prepvio

Mock interviews, any time

Practice with an interviewer that acts like a real one.

Coding, behavioral and introduction rounds, by chat or by voice. Prepvio asks follow-up questions, keeps the clock, and gives you scores and a written debrief when you finish.

Coding interview · 45 min · Medium31:12
Before you code: what should happen if two intervals only touch at an end point?
I'd treat them as overlapping and merge them, so [1,3] and [3,5] become [1,5].
Okay. Walk me through your approach and its complexity.
Problem solving 3/4Communication 4/4Verification 2/4

Example

How it works

1

Pick the round

Coding, behavioral or introduction. Choose the length, the difficulty, and whether you want to talk or type.

2

Do the interview

The interviewer asks one question at a time, digs into vague answers, and keeps track of the clock. In voice mode you just talk; it waits for you to finish.

3

Read the debrief

Scores for each area, a hire signal, what to fix next, and for coding rounds the clarifying questions you missed and a replay of how you wrote the code.

Interviews you can practise

Coding

A problem in a plain editor (no autocomplete, like a real screen), clarifying questions, a follow-up stage, and a review of your code by tracing it.

Behavioral

Stories about conflict, ownership and impact, with follow-ups until the details are clear.

Introduction

The first five minutes of a real loop: tell me about yourself, and what you'd want to be asked about.

System design Soon

Coming soon.

Low-level design Soon

Coming soon.

Resume screen Soon

Coming soon.

Built for real practice

Hands-free voice

The mic stays on, a pause sends your answer, and you can talk over the interviewer to interrupt.

Stays in character

No hints, no praise, no answers. It behaves like an interviewer, not a tutor, until you end the interview.

See where the time went

The analysis shows how long you spent clarifying, coding and testing, and replays your typing.

Progress over time

Averages and trends per area across your interviews, with your weakest area called out.

Ask the coach

After an interview, ask about it: what a better answer would have sounded like, or what to practise next.

Bring your own Kiro key

Optional. Add a Kiro API key on your profile and the interviewer runs on Kiro under your account.

Questions

Does the interviewer run my code?

No. It reads and traces your code, the way many phone-screen interviewers do, and asks you to walk through inputs. Running code is planned.

Which programming languages can I use?

Any. The editor is plain text, so write in the language you'll use in the real interview.

Who can see my interviews?

Only you. Each interview, transcript and score belongs to your account.

What is the Kiro API key for?

Nothing, unless you want it. Without a key, Prepvio's interviewer runs on a model in Amazon Bedrock. With your own Kiro key, it runs on Kiro instead. If your key stops working mid-interview, the interview continues without it.

Your next interview is the one that counts. Practise this one first.

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