MERN Stack Developer

React Front-End Engineer Duration: 12+ Months STAFFXPERT is seeking a React Front-End Engineer with 5+ years of software engineering experience and strong expertise in building scalable, high-performance web applications. The ideal candidate will have advanced experience with React, TypeScript, JavaScript, Next.js, GraphQL, and REST APIs. Required : 5+ years of software engineering experience with strong expertise in front-end development. Expert-level experience with React , TypeScript , and modern JavaScript (ES6+). Hands-on experience with Next.js , GraphQL, and REST API integrations. Strong experience building scalable, high-performance, responsive web applications. Expertise in React architecture, hooks, state management, component design, and performance optimization. Experience with modern front-end build tools such as Vite, Webpack, Babel/SWC, and package managers (npm/yarn/pnpm). Strong knowledge of HTML5, CSS3, responsive design, accessibility (WCAG/ARIA), and cross-browser compatibility. Experience with testing frameworks including Jest/Vitest , React Testing Library, Playwright, or Cypress. Experience with SSR/CSR, Core Web Vitals optimization, bundle optimization, and caching strategies. Knowledge of secure front-end development practices (XSS, CSRF, authentication, session management). Experience with design systems, Storybook, micro-frontends, and Module Federation is a plus. Hands-on experience using AI-assisted development tools such as GitHub Copilot or Claude Code Required Skills React, TypeScript, JavaScript (ES6+), Next.js, GraphQL, REST APIs, React Hooks, State Management, HTML5, CSS3, Responsive Design, Accessibility (WCAG/ARIA), Vite, Webpack, Babel/SWC, npm/yarn/pnpm, Jest/Vitest, React Testing Library, Playwright/Cypress, SSR/CSR, Core Web Vitals, Performance Optimization, Git, AI-Assisted Development Tools.