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 need to demonstrate mastery across React, TypeScript, and performance optimization—skills that 73% of hiring managers prioritize in 2026. Your interview should probe whether candidates can architect scalable component systems, optimize Core Web Vitals under real constraints, and articulate decisions around state management libraries. Ask them to walk through a recent project where they balanced shipping speed with technical debt, or how they'd refactor a legacy codebase without breaking production. Don't just verify coding ability; assess their collaboration mindset—how they communicate with designers, document components, and mentor junior engineers matters as much as their algorithmic chops. The best frontend developers think in user outcomes, not just pixel perfection. Below you'll find a curated set of technical and behavioral questions, along with evaluation rubrics to help you identify candidates who can genuinely impact your product.
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.