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AI mock interview for Full Stack Developers
One session that crosses the whole stack — UI, API, database and deployment — the way full stack interviews do, with feedback on where your depth runs out.
Free 10-minute interview with a full report. Paid plans run full-length sessions.
Full Stack Developer interview questions you might get
A sample of the starting questions. The live interview follows up on your answer, so no two sessions go the same way.
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Walk me through building a comment feature end to end — schema, API, UI and how you ship it.
What it tests: Breadth with sensible defaults.
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How do you handle auth tokens in a single-page app? What are the risks of each option?
What it tests: Security trade-offs across the stack.
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The page loads fast locally but slowly in production. Where do you look?
What it tests: Debugging across layers.
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How would you add optimistic updates to a form, and how do you roll back on failure?
What it tests: Frontend–backend consistency.
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Tell me about a feature you owned from idea to production.
What it tests: Ownership signal.
How a session works
About 20–30 minutes from setup to report. End any time and you still get feedback on what was covered.
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Set your target
Pick a role, level and stack. Add a job description or your resume if you want questions about your real projects.
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Answer live
Speak or type. The interviewer follows up on thin answers, raises the difficulty when you're doing well and switches to code when it fits.
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Read the notes
A report scores every competency, quotes the answers that cost you, and gives you a prep plan for the next session.
A report that quotes you, not a pat on the back
Every score links back to something you actually said.
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Competency scores
Weighted to the role you picked, so a system design gap counts more for a senior backend role than for a frontend junior.
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STAR check on every story
See which part of each behavioral answer was missing — usually the Result.
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How you sounded
Filler words, hedging, "I" versus "we", and whether you cited real numbers — measured from your words, and compared between the first and second half of the interview.
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A prep plan
The two or three things to practice next, and a skill graph that tracks them across sessions.
Competencies — sample report
STAR — "Tell me about a missed deadline"
How you sounded
Questions
Can I choose my stack?
Yes. Name it in the setup (for example MERN, Django + React, or .NET + Angular) and the questions follow it.
How long is a session?
Most sessions take 20–30 minutes. You can end at any time and still get a report on what was covered.
Is my data private?
Your transcripts and reports are visible only to your account. You can delete them from your dashboard.
Is it free to try?
Yes. Each month you get a free interview of up to 10 minutes with its scored report. Paid plans add full-length interviews, every track and the full 360 report.