Interview prep

Frontend Developer interview questions

13 questions frontend developers get asked, grouped by type. Under each one are the skills it is really testing, so you can pick a story from your own work that shows them.

Technical

  1. Walk me through how you'd track down a component that re-renders far more often than it should.
    Tests: performance, debugging
  2. How do you decide when a piece of state belongs in a component versus a shared store?
    Tests: state management, system design
  3. How do you approach keeping a growing web app's bundle size under control?
    Tests: performance, code quality
  4. How do you catch a visual regression, such as broken spacing or an overlapping element, before it reaches users?
    Tests: test strategy, attention to detail

Situational

  1. Tell me about a time you had to make an interface accessible to keyboard or screen reader users.
    Tests: accessibility, attention to detail
  2. A feature works fine in your browser but breaks for a chunk of users. How do you approach it?
    Tests: debugging, attention to detail
  3. A design handed to you doesn't account for a real edge case, such as long text or an empty state. What do you do?
    Tests: communication, attention to detail
  4. The backend response for a feature you're building keeps changing shape while you're still coding against it. How do you handle that?
    Tests: collaboration, system design

Behavioral

  1. Tell me about a time you disagreed with a coworker and how you handled it.
    Tests: conflict resolution, communication
  2. Describe a project or task that did not go well and what you did about it.
    Tests: ownership, reflection
  3. Give an example of persuading someone to adopt an idea they initially resisted.
    Tests: influence, communication
  4. Walk me through how you decided what to work on when you had more requests than time.
    Tests: prioritisation, judgment
  5. Tell me about a time you had to learn something new quickly to get a job done.
    Tests: learning agility, ownership
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Frontend Developer interview questions — Gurus Consulting