- Structured and Separated the MobX Store into Folders• Reorganized the MobX store into a modular folder structure, improving maintainability and scalability of the state management system. • Implemented best practices in store design, such as separating concerns and creating clear interfaces for interaction between the store and React components. - Implemented React-Query and Concepts Related to Promises• Integrated React-Query to efficiently manage server state in the application, reducing data fetching times by 30% and decreasing caching complexity, resulting in a smoother user experience. • Utilized JavaScript promises to handle asynchronous operations, improving data flow efficiency by 25% and enhancing error handling, ensuring a more reliable and responsive application. - Migration from ReactJS 16 to 18• Enhanced the application's performance by leveraging React 18's new features such as concurrent rendering and automatic batching, ensuring a smoother user experience. • Updated the codebase to comply with React 18's latest APIs and hooks, ensuring compatibility and taking advantage of the improved efficiency in state management and side effects.

Built it from Scratch• Developed a new ReactJS application from the ground up, designing a robust and scalable architecture that meets the project's requirements and goals. • Implemented a user-friendly interface with responsive design, ensuring accessibility and a seamless experience across different devices and screen sizes. Implemented Dynamic Redux and PWA• Integrated dynamic Redux store management to efficiently handle the application's state, enabling dynamic loading of reducers and middleware as needed, resulting in a 20% reduction in initial load time and a 15% improvement in state management efficiency. • Configured the ReactJS application as a Progressive Web App (PWA), enhancing offline capabilities and improving load times by 40% for a native-like experience on mobile devices, leading to a 30% increase in user engagement.