Senior React JS Developer

Cognizant; Chennai District; Hybrid; INR 2,200,000 - 4,500,000; Full time

Job summary

Cognizant in Chennai (Hybrid) is seeking a Senior React.js Developer with 5+ years of front-end experience to join our development team. You will lead front-end development, build reusable components, and collaborate with cross-functional teams to deliver scalable web applications.

Ideal candidates will have strong React.js, JavaScript (ES6+), HTML5 and CSS3 skills, plus experience with state management, TypeScript, REST APIs, and modern build tools.

Qualifications

• 7+ years of experience in front-end development.
• Strong expertise in React.js, JavaScript (ES6+), HTML5, CSS3.
• Experience with state management tools (Redux, Context API, Zustand, etc.).
• Proficiency in TypeScript (preferred).
• Experience with REST APIs and asynchronous programming.
• Familiarity with modern build tools like Webpack, Vite, Babel.
• Hands-on experience with Git version control.
• Strong understanding of responsive design and cross-browser compatibility.
• Experience with unit testing frameworks (Jest, React Testing Library).
• Good problem-solving and analytical skills.

Responsibilities

• Develop and maintain responsive web applications using React.js.
• Lead front-end architecture design and ensure best coding practices.
• Build reusable components and front-end libraries for future use.
• Translate UI/UX designs into high-quality, scalable code.
• Optimize applications for maximum speed and performance.Collaborate with backend developers, designers, and product teams.
• Conduct code reviews and mentor junior developers.
• Ensure application performance, quality, and responsiveness.
• Troubleshoot and debug issues across browsers and devices.
• Stay updated with emerging front-end technologies and trends.

Skills

React.js

JavaScript ES6+

HTML5

CSS3

State management

TypeScript

REST APIs

Build tools

Git

Responsive design

Unit testing

Problem-solving

Tools

Webpack

Vite

Babel

Job description

Job Title: Senior React.js Developer

Location: Chennai, Tamil Nadu (Hybrid)
Experience: 5+ Years
Employment Type: Full-time

Job Summary

We are seeking a highly skilled Senior React.js Developer to join our development team in Chennai. The ideal candidate will have strong experience in building scalable, high-performance web applications using React.js and modern JavaScript frameworks. You will be responsible for leading front-end development, designing reusable components, and collaborating with cross-functional teams to deliver excellent user experiences.

Key Responsibilities

• Develop and maintain responsive web applications using React.js
• Lead front-end architecture design and ensure best coding practices
• Build reusable components and front-end libraries for future use
• Translate UI/UX designs into high-quality, scalable code
• Optimize applications for maximum speed and performanceCollaborate with backend developers, designers, and product teams
• Conduct code reviews and mentor junior developers
• Ensure application performance, quality, and responsiveness
• Troubleshoot and debug issues across browsers and devices
• Stay updated with emerging front-end technologies and trends

Required Skills & Qualifications

• 7+ years of experience in front-end development
• Strong expertise in React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with state management tools (Redux, Context API, Zustand, etc.)
• Proficiency in TypeScript (preferred)
• Experience with REST APIs and asynchronous programming
• Familiarity with modern build tools like Webpack, Vite, Babel
• Hands-on experience with Git version control
• Strong understanding of responsive design and cross-browser compatibility
• Experience with unit testing frameworks (Jest, React Testing Library)
• Good problem-solving and analytical skills