Prepare for the interview you actually have
- Live mock interviews that push back, like the real thing
- A study guide built from your resume vs the job description
- Honest scores: strengths, gaps, and what to fix
Daniel
Engineering Manager · Stripe
Daniel is speaking…
- 01Idempotent payments
- 02Webhooks & retries
- 03Rate limiting
- 04SQL vs NoSQLUp next
- 05Ownership stories
Your resume vs the job description
Built for the interview you actually have
How it works
From signup to your first honest feedback in about 15 minutes.
Point it at the job
Company, role, your resume. Two minutes of setup.
Study the gap
A study guide covers what the job needs and your resume lacks.
Answer out loud
Knowing the answer and saying it well are different skills. Practice the second one.
Get the honest version
A score, where you rambled, and what to fix before the real one.
Stop guessing what to study
Every project comes with a study guide built by diffing your resume against the job description. What you already know gets a quick recap. What you don't gets taught.
- Biggest gaps first, so you study in the right order
- Real code and diagrams, not a list of links
- Check-yourself questions, so you know when a topic is done
- Sized to the days you have left before the interview
Free projects get a starter guide. Premium goes up to 12 sections deep.
Your study guide
Backend Engineer · Payments
Gap: Idempotent payment APIs
Your resume covers REST design, but this role retries failed network calls against money. The interviewer will expect one answer: an idempotency key, stored with the result.
RequestIdempotency keyCharge once
// Retries reuse the key, so the charge runs once
const charge = await stripe.charges.create(
{ amount: 4200, currency: 'usd' },
{ idempotencyKey: order.id },
)Interview tip: when they ask “what if the request times out?”, they are fishing for idempotency. Say the word early.
Check yourself
- A client retries a charge that already succeeded. Walk through what your API does.
- Where does the idempotency key live, and for how long?
It always sounds better in your head
Everyone's answers are great until they say them out loud. Work through questions written for your exact job, by voice, and get graded on every single answer.
- Questions built from the job description and your resume
- Answer by voice — transcribed and scored on the spot
- Told exactly what was missing, not just a number
- Run it again and watch the score move
Practice session
Backend Engineer · Payments
Question
Tell me about a time you disagreed with a teammate about a technical decision.
Your answer · 0:58
“…so instead of arguing in the PR thread, I benchmarked both approaches and brought the numbers to standup the next morning…”
Feedback
78/100
Strong open — you led with data instead of opinion. But you never said what shipped. End with the result.
The follow-up is the real interview
Anyone can deliver a prepared answer. The live interviewer listens to yours and pushes back — why this, why not the simpler thing — with the clock running. That's the part you can't practice alone.
- Real-time voice — it responds to what you actually said
- Push-back and follow-ups, like a real interviewer
- A visible clock, because pressure is part of the skill
- Ends with a score: strengths, gaps, and role fit
Daniel
Engineering Manager · Stripe
Daniel is speaking…
No subscription. Just prep.
An interview is a two-week problem, not a twelve-month plan. Start free. Buy a credit when it counts — it never expires.
Free
Get started, no card needed
- 1 project per month
- 5 tailored questions
- 1 practice session
- 1 live interview (3 min)
- Starter study guide
Premium projects
Buy credits once. They never expire. From $6 a project.
Every premium project includes
- 20 tailored questions
- 10 practice sessions
- 5 live interviews (10 min each)
- Full study guide (up to 12 sections)
- Full AI feedback & STAR coaching
One-time payments via Stripe. Nothing to cancel.
Free preparation guides
How each interview type really works. No signup, no email gate.
Frequently asked questions
What is a live AI interview?
A real-time, spoken interview with an AI that has read your resume and the job description. It asks, listens, follows up, and scores you when it ends. Free projects include one 3-minute interview; Premium unlocks five of up to 10 minutes each.
What is in the study guide?
A personalized document built from the gap between your resume and the job description. Topics you already know get a short recap; topics you are missing get taught properly, with code, diagrams, and check-yourself questions. Free projects get a starter guide; Premium guides go up to 12 sections deep.
Can I practice for any company?
Yes. Create a project for any company and role. Questions, the interviewer, and the study guide are tailored to that exact job.
Is this a subscription?
No. You buy Premium Project Credits once and they never expire. Nothing recurring, nothing to remember to cancel.
What do I get for free?
One project a month: 5 tailored questions, 1 practice session, a short live interview, and a starter study guide. Spend a credit to unlock 20 questions, 10 sessions, longer interviews, and the full guide.
Is my data private?
Yes. Your sessions and recordings stay private and are never shared.
The interview is coming either way
Walk in like you've already done it once. One free project, no card needed.
Start free