The Technical Interview You Can Practice Until You Pass
A senior-level technical interview that asks, listens, and corrects you like a staff engineer, drilling into exactly what you say and adapting to your level. Rehearse the AI screen by voice or text, and walk in already knowing you’ll pass.
- 16 topics, junior → staff
- Corrects like a senior
- Answer by voice or text
- Free to start
Interviewer · React
SeniorWhat actually causes a component to re-render?
Right. State or prop identity changed.
Refine. Name the cost: referential equality.
Three steps, one honest read on where you stand.
- 1
Pick your level
Junior to staff, or drill a single topic. It sets the difficulty, length, and how strictly you’re graded.
- 2
Answer by voice or text
Speak your answer or type it. The interviewer corrects you each turn and drills into exactly what you raise.
- 3
Get a calibrated scorecard
A per-topic read on your strengths and gaps, framed against the level you picked, then practice your weakest area.
Practice that actually moves the needle.
Not flashcards. A real adaptive interview that finds your ceiling and tells you what to fix.
Adapts to your level
Junior to staff. The bar rises as you prove yourself.
Corrects like a senior
Real feedback every turn: what’s right, what to refine.
Goes deeper
Drills into what you say until it hits your limit.
It asks like a senior, across every topic.
React, Node, Python, Go, Java, SQL, security, real-time and more. Every question is written fresh and adapts to your answer. There’s no canned bank to memorize your way around.
Interviewer · React
What actually causes a component to re-render?
drilling into: reconciliationPractice every part of the screen.
A real screen isn’t just questions. It’s code you have to fix and a CV you have to stand behind.
The adaptive senior screen. Pick a level and a focus topic, or run full stack across the whole syllabus.
Fix a real buggy snippet in place. You get the corrected version back as a diff, with the bug and the level-up called out.
Upload your CV and defend every line of it, or run it against a real job description and get the gap report.
Hit something you don't know? Learn the concept in a short guided loop, then prove it before moving on.
Practice the way your target company interviews.
Every company screens differently. A payments team probes idempotency and consistency; an infra team wants failure modes. Pick the style you’re walking into and the interview is weighted to match, and it tells you honestly what that style doesn’t cover.
Browse the PlaybookOne session is a score. Fifty is a record.
Most prep tools hand you a number and forget you. Everything you do here builds one picture of how deep you actually go.
After each session
An honest scorecard
Topic by topic, where you stood and, on anything short of strong, the reason it fell short, in the interviewer’s own words.
Then
A study plan
Your weak spots, ordered by impact. Each one is either a drill you can start in a click or a concept you can go learn.
Over time
Your Depth Passport
The depth you’ve sustained per topic, never lowered by one bad day, never raised by one lucky answer. Yours privately; publish it only if you want to.
A level only counts once you’ve held it across more than one session, so it can’t be gamed in an afternoon.
Sixteen topics. Every question written fresh, to a senior standard.
There’s nothing to memorize your way around, and any topic here can be drilled on its own until it’s solid.
- React
- Node.js
- JavaScript
- TypeScript
- Python
- Go
- Java
- REST APIs
- Relational DBs
- Testing
- Security
- Real-time
- DevOps
- CS fundamentals
- AI engineering
- Machine learning
Engineers who practiced here landed the offer.
“I froze on a micro1 screen. Two weeks here and the follow-ups stopped scaring me. Passed the next one.”
“It caught me hand-waving about transactions and made me actually explain isolation levels.”
“It kept drilling deeper until I hit my limit, then showed me the gap. Landed a senior offer.”
Ready to be grilled?
Your first interview is free, no card needed. After that, top up with a credit pack whenever you need one. No subscription.