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ready.Live interview practice for any role, in any field.

Most realistic interview experience.

Any role you can describeFeedback on every answer
Interviewer · SteveSenior ML Engineer track
LIVE
Question 3 of 5 · System design
“Walk me through how you'd serve a recommendation model to 10M daily users. Where would latency hurt you first?”
You

“I'd start with a feature store and cache the embeddings, then batch the candidate generation so the ranking model only scores a few hundred items per request…”

Difficulty
rising
Report ready
it quotes you
Every profession

If you can describe the interview, you can practice it

The interview

Human-like interview
experience

It adapts to what you say and gets harder the better you do, the way a good interviewer would.

Pick your interview

Start from the curated library, where every interview is designed by experts.

Senior ML EngineerL5
System DesignStaff
Data ScientistL4

A live conversation

You answer one question at a time, and it follows up on what you said.

InterviewerListening…

Adaptive follow-ups

Answer vaguely and it asks for specifics. The questions get harder as you get stronger.

Practice at your own pace

Run the full arc from warm-up to your closing questions, or end early whenever you're done.

Tailored to your experience

Add your resume and the questions come from your real background, not a generic script.

How it works

From your first question
to your final round

Pick your interview

Choose one from the library, or paste in the exact job you're applying for.

Talk it through

It's a real conversation, and each question builds on your last answer.

Read your report

You get a report that quotes what you said and shows what to fix first.

Your interview

Aimed at the job in front of you

You decide what to practice for, whether that's a ready-made interview or the exact job you're applying for.

  • Interview for the exact opening

    Paste a job posting, or just the link to one, and the interview shapes itself around that exact role.

  • A library that runs deep

    The library is deepest in engineering, data, and AI today, and it keeps expanding into new fields like law and healthcare.

Search the libraryapp.openskill.ai/library
All rolesML & AIDataSystem DesignSecurity
L5

Senior ML Engineer

5 questions
L4

Data Scientist

6 questions
Staff

System Design

4 questions
L4

Security Engineer

5 questions
Over time

Track your progress

Every session is saved with its scores, so you can watch what's improving and catch the mistakes that keep coming back.

  • Replay yourself

    Come back in a month, replay an old answer in your own voice, and hear the difference.

  • Patterns, named

    See which skills are climbing and which mistakes keep returning, so you always know what to drill next.

Your progress · last 12 sessions
Average score
7.4 ↑ +1.6
Skill profile
Communication8.4
Technical7.1
Problem solving7.6
Depth6.4
Practice streak
The report

A report that shows
exactly what to fix

Minutes after you finish, you get a report on every answer, with your own words set next to what a strong response would have covered.

OpenSkill
01 Feedback report02 Detailed analysis03 Progress & analytics
Light
Post-interview report

Senior Backend Engineer · Stripe

Senior Backend EngineerStripeJun 14, 202632 min5 questions
Download report
7.4OUT OF 10
Good
Solid performance, with clear gaps to close.
You showed strong engineering instincts and clarity of thought. Focus on quantifying impact and going deeper on tradeoffs.
Communication8.1
Technical knowledge6.8
Problem solving7.2

Competency profile

6 dimensions
Your score

Communication & delivery

7.7
Overall delivery
Clear and confident; trim filler to sharpen it.
Grammar accuracy
94% Strong
Filler words
6.2% Watch
Word repetition
4.1% Good

Answer quality across questions

View full breakdown →
What you did well
  • Clear, well-structured answers with strong narrative flow
  • Asked sharp clarifying questions before diving in
  • Named concrete tradeoffs instead of staying abstract
Top things to improve
  • Quantify impact by attaching metrics to your project stories
  • Go deeper on systems tradeoffs and failure modes
  • Don't bail early, fully develop each answer
Priority action items
  • Re-tell two recent projects with metrics (impact, scale, outcomes)High
  • Practice system design tradeoffs & failure modesHigh
  • Run 5 mock interviews focused on depth & clarityMedium
FAQ

Questions, answered

Anything else, write to us and a person will reply.

Write to us
What is openskill?

A place to practice interviews. An interviewer runs the session, adapts as you answer, and hands you a report built from what you said.

How realistic is it?

It runs like a real interview: an easy warm-up to start, a core that presses on your weak spots, then a few minutes for your own questions at the end. The interviewer stays in character and follows up whenever an answer feels thin.

Isn't this just ChatGPT?

You can ask a chatbot to interview you, and it will, politely. It drifts out of role, accepts whatever you offer, and congratulates you at the end. An openskill interviewer keeps the pressure on, and the report that follows scores every answer against what a strong one covers, quoting your own words as the evidence.

What can I practice for?

Any role you can describe. Paste a job posting from any field and interview for exactly that opening, or write the scenario yourself. The curated library goes deepest today in engineering, data, and AI roles, and it grows into new professions steadily.

What does it cost?

Your first full interview and report are free. After that, a monthly plan covers unlimited sessions.

Is my data private?

Yes. Your sessions, recordings, and reports are visible only to you, and we don't share them.

The blog

Interview advice and strategies

Practical advice on how interviews are run today and what separates a strong answer from a forgettable one.

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Jul 2, 2026
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Rewatch your interview and catch what you couldn't feel in the moment

You can't see yourself clearly while you're being interviewed. Watching your own recording back, next to honest feedback, fixes things no amount of in-the-moment effort can.

Jul 1, 2026
Interview Practice

Practice interviews built around the exact job you're applying to

Generic "tell me about yourself" practice doesn't prepare you for a specific role at a specific company. Rehearse against the job posting instead, tuned to the company and the level.

Jun 30, 2026
Interview Practice

Why an AI interviewer that pushes back beats a friendly chatbot

A chatbot is built to please you. Real interview practice needs something that probes and pushes, so the thin answers get caught in private instead of in the room that decides your offer.

Jun 29, 2026
Interview Practice

Why vague interview feedback keeps you stuck

"Good answer, but be more specific" gives you nothing to act on. The kind of feedback that moves your interview performance quotes what you said and shows you the gap.

Jun 28, 2026
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