Definition: Frontend Developer interview questions cover three buckets — behavioural (your past experience), technical (your domain skills like React, TypeScript, CSS/Tailwind), and situational (how you'd handle hypothetical scenarios). Strong answers use the STAR method.
Frontend developers today must master async JavaScript patterns—studies show 78% of production bugs stem from improper promise and callback handling. Your interview should probe both theoretical understanding and practical debugging: ask candidates to explain race conditions, implement a custom hook that manages API calls, or refactor callback hell into clean async/await. Beyond technical chops, assess their design system literacy and accessibility knowledge, since modern frontend work increasingly demands collaboration with designers and QA on inclusive component architecture. Pay attention to how they explain trade-offs between performance optimization and maintainability; the best candidates think in systems, not just syntax. Test their familiarity with modern tooling like Vite or Next.js, but prioritize their ability to learn new frameworks quickly—the landscape shifts rapidly. Below you'll find our curated interview questions ranked by difficulty and role relevance, complete with model answers and follow-up prompts to help you identify candidates who can grow with your team.
Reading questions doesn't prepare you for the pressure of saying answers out loud. Interview Coach runs an 8-question mock interview, scores every answer with the STAR framework, and gives you feedback on what to say differently next time.
60–90 seconds per question is the sweet spot. Shorter feels rehearsed, longer loses the interviewer's attention. The STAR structure naturally hits this length.
Behavioural asks about a specific past event ("Tell me about a time…"). Competency-based asks about a general skill ("How do you approach…?"). Both want STAR-style structured answers.
Yes — using AI to generate likely questions, role-play responses, and get scored feedback is now standard prep. Just don't recite AI-generated answers verbatim; interviewers are increasingly trained to spot it.