Interview questions

Full Stack Developer

Questions to evaluate a Full Stack Developer from the first call through to the case study. Copy them or generate a fresh set with AI inside Klyver.

KH
Klyver Hire
August 2026 · 5 min read

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Warm-up

  1. Tell me about a project where you worked on both frontend and backend.
  2. Which stack do you prefer when you get to choose?

Process and technique

  1. Walk me through how you would design the architecture of a new feature end to end.
  2. How do you decide when to optimise the performance of a database query?
  3. Describe your code-review process: what do you look for when reviewing someone else's code?
  4. How do you handle a critical production incident while the team is asleep?

Behaviour

  1. Tell me about a technical disagreement with another developer. How was it resolved?
  2. How do you handle deadline pressure when you know the code needs more time?

Case study

  1. The system starts failing under load at peak hours. How do you diagnose the cause?
  2. You inherit a codebase with no documentation and no tests. Where do you start?

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Frequently Asked Questions

It depends on the project, but define the exact frontend, backend and database in the opening to filter better.
On average 25-35 days for a mid-senior level, longer in highly competitive markets.
Remote widens the technical candidate pool considerably; consider whether your operation allows it.

Related

Feature: AI Candidate Brief (generates the interview guide) →Job description: Full Stack Developer →

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