React JS Developer - Chennai Only

Capgemini; Chennai District; On-site; INR 1,400,000 - 2,200,000; Full time

Job summary

Capgemini is seeking an experienced Frontend Engineer to join our Chennai team. You will work on React-based UI applications, implementing modern front-end patterns and ensuring high performance, accessibility, and responsive design for client projects.

Responsibilities include integrating REST APIs, writing unit tests, and leveraging AI-assisted tools to boost productivity while maintaining code quality and security best practices.

Qualifications

• Proficient in React core concepts and modern JavaScript/TypeScript.
• Experience with REST API integration and debugging.
• Familiarity with AI-assisted development tools and coding productivity techniques.
• Strong focus on code quality and testing practices.

Skills

React Core

React 17/18+

Lit

JSX & Components

Props & State

Lifecycle Concepts

Virtual DOM

Hooks

useState & useEffect

useMemo & useCallback

State Management

Context API

Redux / Redux Toolkit

Middleware

UI Engineering

HTML5 & CSS3

JavaScript ES6+

TypeScript Basics

Responsive Design

Accessibility

Performance

Code Splitting

Debouncing & Throttling

API Integration

REST APIs

Error Handling

Testing & Quality

Jest

React Testing Library

Unit Testing

Linting

AI-Assisted Development

GitHub Copilot

Claude Code

Tools

GitHub Copilot

Claude Code

Job description

Exp: 6-8 Yrs

Current Location: Only Chennai candidates will be considered

Work Location: Chennai only (Client place)

NP: 0-30 days

**Skill Area**

**Required Knowledge**

• React Core
• React 17/18+, Lit, JSX, components, props, state, lifecycle concepts, and virtual DOM understanding.
• Hooks
• useState, useEffect, useMemo, useCallback, useRef and custom hooks with practical scenarios.
• State Management
• Context API, Redux or Redux Toolkit, middleware concepts and state design.
• UI Engineering
• HTML5, CSS3, JavaScript ES6+, TypeScript basics, responsive design, and accessibility awareness.
• Performance
• Memorization, lazy loading, code splitting, rendering optimization, debouncing, and throttling.
• API Integration
• REST API integration, error handling, loading states, authentication token handling, and browser debugging.
• Testing & Quality
• Jest, React Testing Library, unit testing, linting and code quality practices.
• AI-Assisted Development
• Hands-on experience with GitHub Copilot (GHCP), Claude Code, or equivalent AI-assisted development tools. Ability to leverage AI for code generation, refactoring, unit test creation, documentation, debugging, code review assistance, and productivity improvement while adhering to secure coding and engineering best practices.