Front-End Developer Interview Questions

Use these 13+ Front-End Developer interview questions to assess candidates from every angle: warm-up, role-specific skills, behavior, and problem solving. Adapt them to your process, or generate a custom set with the AI tool below.

Jasmin Erge

Written by Jasmin Erge, HR Content Specialist at Hirex. Reviewed by the Hirex Recruitment Team. Last updated July 15, 2026.

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Welcoming questions

  1. Can you tell us about yourself and the front-end work you have shipped?
  2. Which interface you built are you most proud of, and why?

Role-specific / technical competencies

  1. How do you decide when to break UI into components, and how do you keep them reusable?
  2. Walk us through how you manage state in a medium-sized application.
  3. How do you find and fix a rendering performance problem?
  4. What is your approach to testing front-end code, and where do you draw the line?
  5. How do you handle an API that returns data in a shape awkward for the UI?

Behavioural & culture fit

  1. Tell us about a time you pushed back on a design for feasibility or UX reasons.
  2. Describe a bug that only happened in production. How did you track it down?
  3. How do you stay current with front-end tooling without chasing every trend?

Problem-solving / case

  1. Users on slow connections report the app feels broken. What do you investigate first?
  2. You inherit a component with 2,000 lines and no tests. It needs a new feature this sprint. What do you do?
  3. Design wants a complex animation that tanks performance on mid-range phones. How do you proceed?

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