• Developed dynamic and interactive web applications using React.js and Next.js, ensuring a seamless user experience across both desktop and mobile platforms.• Utilized Redux and Context API for state management, creating scalable applications with a focus on data consistency and performance.• Built reusable components and optimized code for maintainability, ensuring a smooth handoff to other developers and streamlined future updates.• Implemented React Router for efficient navigation and dynamic rendering, enhancing user engagement and navigation speed.• Leveraged server-side rendering (SSR) and static site generation (SSG) with Next.js to improve loading times and search engine optimization (SEO).• Integrated RESTful APIs and GraphQL to fetch data dynamically, enabling real-time updates and enhancing app responsiveness.• Conducted code reviews, provided feedback, and collaborated closely with backend developers, UI/UX designers, and product teams to deliver cohesive, high-quality features.• Ensured cross-browser compatibility and conducted thorough testing using Jest and React Testing Library, improving code quality and reliability.• Improved site performance using Webpack and Babel, implementing lazy loading, code splitting, and other advanced techniques for faster load times.• Leveraged Git for version control and participated in an Agile workflow using tools like Jira and Confluence, consistently meeting sprint goals and client requirements.