How to hire full stack developers
To hire full stack developers, test every layer: a real conversation, live coding, a real feature from database to button, a follow-up and system design.
- 1✓AI screening interviewA feature she shipped end to endAriaReport ready
- 2✓Live codingA shared pad, AI assist offAI interviewerReport ready
- 3✓Vibe codingTeam invites, from database to buttonNixReport ready
- 4✓Follow-upHer running app and databaseNixReport ready
- 5✓System designInvites for 50,000 teamsWhixReport ready
The full stack developer interview process
Five rounds, each with its own report. Every claim is captured and scored against your rubric.
Full stack developer skills to assess
Score every candidate on the same six skills, rated against evidence from the rounds.
- Coding fundamentals
- Frontend
- API design
- Database design
- Reviewing AI code
- System design
Full stack developer interview questions
Use these full stack interview questions in your own loop, or let Hello Recruiter ask them, follow up on the answers and score them.
Tell me about a feature you shipped end to end.
How do you keep invite links safe?
Write dedupeInvites. Keep the latest invite per email for each team, and drop the expired ones.
One test is failing. What if two invites have the same timestamp?
Add team invites: an invite form, an API endpoint and an invites table. Only admins can invite.
I clicked send twice. Why is there only one invite?
What does someone who isn't an admin see?
Scale invites to 50,000 teams. What happens when the email provider goes down?
Integrity in every round
Bad Actor Detection flags pasted code, models outside the allowed list, second screens and voice mismatches, with timestamps.
Fundamentals first
Live coding runs with AI assist off. Vibe coding lets candidates use the tools and models you allow.
We evaluate. You decide.
Hello Recruiter evaluates and organizes the evidence. Your hiring team decides who moves forward.
Frequently asked questions
How do you hire and interview full stack developers?
By testing every layer: a live coding problem for fundamentals, a real feature that touches the UI, the API and the database, a follow-up where the interviewer uses the running app and asks about specific lines of code and database choices, and a system design round. Each round produces its own report.
What is a vibe coding interview?
A vibe coding interview is a technical interview where the candidate builds a real feature with the AI coding tools they already use, such as VS Code, Cursor or Claude Code, and is evaluated on how they direct, review and verify AI-written code, not only on whether the code runs. On Hello Recruiter, Nix runs these interviews and records every prompt, edit and test run.
How is live coding different from vibe coding?
Live coding tests fundamentals with AI help turned off: a shared coding pad, an AI interviewer asking questions while the candidate types, and tests that run in the console. Vibe coding tests how the candidate ships a real feature with AI tools allowed, within the models, tools and budget the recruiter sets.
How does Hello Recruiter detect cheating in technical interviews?
Every round is monitored for integrity signals such as code pasted from outside the workspace, calls to AI models outside the allowed list, answers read from a second screen, and a voice that doesn't match earlier rounds. Each signal is timestamped in the candidate's integrity report.
What does the recruiter get after each round?
A report for every round: an AI score out of 100, evaluation criteria marked Met, Not met or Not yet evaluated, skills rated Very strong, Strong, Weak or Very weak, a risk level, and any fraud signals with timestamps. Hello Recruiter evaluates; the hiring team decides.
More hiring guides
Run this loop on your next full stack developer hire
Precision hiring, with the evidence behind every pick.
