Spearheaded the development of high-performance, cross-platform web applications, resulting in a 30% increase in user engagement.• Architected and implemented robust state management solutions using Redux, Context API, significantly improving app scalability and maintainability.• Collaborated closely with UI/UX designers and product teams to deliver responsive, intuitive, and user-friendly interfaces across multiple platforms.• Integrated third-party APIs, including payment gateways and social media logins, to enhance app functionality and improve user experience.• Contributed to the development of web applications across various industries, including Ecommerce, Fantasy Sports, Healthcare, and Food Services.• Ensured adherence to best practices and app store guidelines for web app submissions, ensuring seamless deployment across different environments.• Developed and maintained platform-specific functionality using React Js (JavaScript/TypeScript) andensuring cross-platform compatibility.• Implemented performance optimization strategies, such as code splitting, lazy loading, and memoization, reducing app load times by 25%.