Frontend Developer - Meta Interview Prep

ReactJS | Redux | HTML5 | CSS3 | REST APIs

About the Role

We are seeking a skilled and proactive Frontend Developer with strong hands-on experience in ReactJS and Redux. The ideal candidate will be passionate about building scalable web applications and delivering seamless user experiences.

💼 Key Responsibilities
✅ Required Skills
🌟 Good to Have
📑 Topics for Interview Preparation (4–6 Years)

🔹 Core React.js

  • React basics: components (functional vs class), JSX
  • State & Props (differences, data flow)
  • React Hooks (useState, useEffect, useContext, useReducer, useMemo, useCallback, useRef)
  • Controlled vs Uncontrolled components
  • Higher Order Components (HOCs)
  • React.memo and performance optimizations
  • Error boundaries
  • Code splitting, lazy loading, and Suspense
  • React Router (protected routes, nested routes, dynamic routing)
  • Forms handling & validation (Formik, React Hook Form optional)
  • 🔹 Redux (State Management)

  • Redux architecture (actions, reducers, store, dispatch, selectors)
  • Middleware (redux-thunk, redux-saga basics)
  • Redux Toolkit (modern best practices)
  • State normalization & debugging with Redux DevTools
  • When to use Redux vs Context API
  • 🔹 JavaScript (Advanced)

  • ES6+ features (let/const, arrow functions, template literals, destructuring, spread/rest, modules)
  • Closures, lexical scope, hoisting
  • Event loop, async/await, promises, microtasks vs macrotasks
  • DOM manipulation (querySelector, addEventListener)
  • Array & Object methods (map, filter, reduce, forEach, find, some, every)
  • Shallow vs Deep copy
  • Prototype, this, bind/call/apply
  • Error handling (try/catch, custom errors)
  • Performance optimization in JS
  • 🔹 HTML5 & CSS3

  • Semantic HTML (header, nav, section, article, footer)
  • Forms & input types
  • Media elements (audio, video, canvas, SVG)
  • Accessibility (ARIA attributes, alt text, tab index)
  • CSS Flexbox & Grid
  • Positioning (absolute, relative, sticky, fixed)
  • CSS animations & transitions
  • Responsive design (media queries, mobile-first approach)
  • Preprocessors (Sass basics)
  • CSS variables & custom properties
  • Cross-browser compatibility issues
  • 🔹 REST APIs

  • Fetch API & Axios
  • Handling async requests (loading, success, error states)
  • REST principles (GET, POST, PUT, DELETE)
  • Authentication & Authorization (JWT basics, tokens in headers)
  • Error handling & retries
  • API versioning & pagination
  • 🔹 Git & Version Control

  • Git workflow (clone, branch, commit, push, pull, merge)
  • Resolving merge conflicts
  • Pull request / code review process
  • Git branching strategies (Gitflow, trunk-based)
  • Tags, releases, and rollbacks
  • 🔹 Agile & Team Practices

  • Agile principles & Scrum framework
  • Daily standups, sprint planning, retrospectives
  • JIRA or similar project management tools
  • CI/CD basics (GitHub Actions, Jenkins, GitLab CI/CD – just concepts)
  • 🔹 Optional / Good to Have

  • Adobe Experience Manager (AEM) basics
  • Components, templates, client libraries
  • AEM + React integration
  • Performance Optimization
  • Lazy loading images, code splitting
  • Lighthouse / Core Web Vitals
  • Testing
  • Unit testing with Jest & React Testing Library
  • Snapshot testing
  • End-to-end testing basics (Cypress/Playwright)
  • ✅ With 4–6 years of experience, interviewers expect:

  • Strong hands-on coding ability in React & Redux
  • Clean, scalable, reusable code
  • Understanding of architecture decisions (when to use Redux, how to structure components)
  • Debugging & performance optimization skills
  • Experience collaborating in Agile teams with Git
  • Ability to explain design decisions clearly