FE

Frontend Interview Preparation

What you need for a Frontend (FE) tech interview:

Core Skills

  • Strong understanding of HTML, CSS, and JavaScript (ES6+)
  • Deep knowledge of at least one modern frontend framework (React, Vue, Angular)
  • Familiarity with state management (Redux, Context API, Vuex, etc.)
  • Experience with REST APIs and/or GraphQL
  • Responsive and accessible web design principles
  • Component-based architecture and modular code

Coding & Problem Solving

  • Ability to solve algorithm and data structure problems in JavaScript
  • Comfort with live coding and whiteboard exercises
  • Debugging and performance optimization skills

Tooling & Workflow

  • Experience with build tools (Webpack, Vite, etc.) and package managers (npm, yarn)
  • Version control with Git
  • Testing (unit, integration, E2E with Jest, Testing Library, Cypress, etc.)

Soft Skills

  • Clear communication and ability to explain technical concepts
  • Code review and collaboration experience

Interview Preparation

  • Practice common FE interview questions (see the Q&A section)
  • Build and review small projects or coding challenges
  • Be ready to discuss trade-offs, best practices, and recent trends in frontend development

React Interview

Most Probable React Interview Questions (2025)


Last modified December 25, 2025: update fe and be interview contents (8d38fb6)