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Wissen Logo Wissen · IT - Software Development

Senior React JS Developer

India, Bangalore South · Job Posted March 05, 2026
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Job Description

We are seeking an experienced Senior React JS Developer / Front-End Lead with 7–10 years of hands-on front-end development experience. The ideal candidate will be responsible for designing scalable UI architectures, leading development initiatives, building high-performance web applications, and mentoring junior engineers. The role requires deep knowledge of modern JavaScript, React.js, UI performance tuning, and front-end best practices.

Job Responsibility

  • Lead the front-end architecture, design, and development of complex web applications using React.js
  • Build scalable, reusable, and high-performance UI components with clean code standards
  • Collaborate closely with product managers, backend engineers, and UX/UI teams
  • Implement state management solutions like Redux / Redux Toolkit / Context API / Zustand
  • Ensure responsive layouts, cross-browser compatibility, and W3C-compliant UI development
  • Optimize applications for speed, SEO, accessibility, and scalability
  • Conduct thorough code reviews and guide junior developers through best practices
  • Troubleshoot production issues, perform performance tuning, and propose architectural improvements
  • Work with CI/CD pipelines, version control, and modern development workflows

Requirements

  • 5+ years of hands-on experience with JavaScript, HTML5, and CSS3
  • Strong expertise in JavaScript (ES6+ to ES2023)
  • Minimum 4+ years of experience in React.js (React 17+)
  • Strong experience with TypeScript
  • Experience with Redux / Redux Toolkit, Context API, or Zustand
  • Ability to build scalable and reusable React components
  • Good understanding of asynchronous programming (Promises, async/await, RxJS)
  • Proficiency in advanced CSS3, Flexbox, Grid, and animations
  • Experience with Bootstrap and modern UI libraries
  • Experience with CSS-in-JS tools like Styled Components or Emotion
  • Ability to convert Figma / Illustrator designs into UI components
  • Experience working with REST API integration
  • Understanding of Micro-Frontend Architecture (preferred)
  • Basic knowledge of Node.js
  • Strong debugging and performance optimization skills
  • Experience with Karma, Jasmine, Enzyme, or similar testing tools
  • Proficient with Git and version control workflows
  • Familiarity with CI/CD pipelines

Nice to have

  • Experience with Next.js or SSR frameworks
  • Knowledge of Webpack, Vite, or other bundlers/build tools
  • Understanding of Web Accessibility (A11y) best practices
  • Experience with monorepos or micro-frontend platforms
  • Exposure to containerization (Docker) for front-end builds (optional)
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