React Developer

React Developer – Job Description

Job Title

React Developer / Frontend Developer

Job Summary

We are looking for a skilled React Developer to build responsive, scalable, and high-performance web applications. The candidate will work with UI/UX designers, backend developers, QA engineers, and product teams to develop and maintain modern web applications using React.js.

Key Responsibilities

• Develop responsive web applications using React.js.
• Build reusable and maintainable React components.
• Convert UI/UX designs into functional web interfaces.
• Integrate REST APIs and backend services.
• Manage application state using Redux, Context API, or other state-management solutions.
• Implement routing using React Router.
• Handle form validation and user interactions.
• Optimize applications for performance and scalability.
• Debug and resolve UI and functional issues.
• Write unit and integration tests.
• Work closely with QA engineers to fix defects.
• Participate in code reviews and Agile/Scrum ceremonies.
• Maintain Git repositories and follow branching strategies.
• Collaborate with backend developers for API integration.
• Support CI/CD and application deployment activities.

Required Skills

Frontend

• React.js
• JavaScript / TypeScript
• HTML5
• CSS3
• ES6+
• JSX
• Responsive Web Design

React Ecosystem

• React Hooks
• React Router
• Redux / Redux Toolkit
• Context API
• Axios / Fetch API
• npm / yarn

Testing

• Jest
• React Testing Library
• Cypress / Playwright
• Basic understanding of API testing

Tools

• Git / GitHub / GitLab
• VS Code
• Chrome DevTools
• npm

Backend/API Knowledge

Good understanding of:

• REST APIs
• HTTP methods: GET, POST, PUT, PATCH, DELETE
• JSON
• Authentication / Authorization
• HTTP status codes
• API error handling

Good to Have

• TypeScript
• Next.js
• Node.js basics
• Docker
• CI/CD
• AWS/Azure
• Microservices basics
• Web performance optimization
• Accessibility (WCAG)
• Security concepts such as XSS and CSRF

Experience

Typical requirements:

• 2–4 years: React Developer
• 4–7 years: Senior React Developer
• 7+ years: Lead/Principal Frontend Engineer

Resume Keywords

React.js | JavaScript | TypeScript | HTML5 | CSS3 | JSX | React Hooks | Redux | Redux Toolkit | React Router | REST API | Axios | Jest | React Testing Library | Cypress | Playwright | Git | GitHub | Agile | CI/CD | Responsive Web Design

React Developer Interview Topics

For an interview, prepare:

1. What is React and why is it used?
2. Props vs State
3. Functional vs Class components
4. React Hooks — useState , useEffect , useMemo , useCallback
5. Virtual DOM
6. Component lifecycle
7. Controlled vs uncontrolled components
8. React Router
9. Redux and Redux Toolkit
10. API integration using Axios/Fetch
11. Error handling
12. Authentication and JWT
13. React performance optimization
14. Unit testing with Jest
15. React Testing Library
16. JavaScript ES6 concepts
17. Promises and async/await
18. Closures
19. Event bubbling and delegation
20. Git and CI/CD