• Designed a microservices architecture using NGINX for routing and RabbitMQ for event-driven communication, improving system scalability and performance by 30%• Built a cross-platform mobile app using React Native, integrating with microservices and GraphQL APIs to deliver a seamless user experience on both iOS and Android platforms, while ensuring high performance and scalability.• Built a CI/CD pipeline with Docker to automate deployment, cutting deployment time by 50% and ensuring faster, more reliable updates• Created a GraphQL gateway to optimize API calls and improve data retrieval, resulting in faster access by 25% and reduced server load.• Set up centralized logging and monitoring using Sentry, providing real-time insights into system health and improving troubleshooting efficiency.• Developed a fault-tolerant system by implementing load balancing and service redundancy, ensuring high availability with 99% uptime and minimal downtime of less than 1%.

• Built cross-platform mobile apps using Ionic and React Native for iOS and Android, both of which improved user engagement by 15% and delivered enhanced performance with native-like user experiences.• Implemented an Excel-like data table with full CRUD functionality, allowing users to easily interact with large datasets in a user-friendly format• Migrated the web app from Vue 2 to Vue 3, improving performance by 20%, enhancing maintainability, and leveraging new Vue 3 features like Composition API for more modular and reusable components.• Optimized database queries and implemented caching, speeding up transaction processing by 25% and improving platform responsiveness• Developed modular APIs to simplify third-party integrations, reducing integration time by 30% and improving system flexibility

• Developed a React Native hybrid mobile app, integrating real-time waste reporting and feedback functionalities. This improved user engagement by 20% and streamlined data submission processes, delivering a seamless and efficient user experience across both iOS and Android platforms• Designed and developed a custom CRM system to manage the transfer and tracking of reports between departments, reducing processing delays by 40% and improving transparency across units• Developed a real-time reporting dashboard, providing actionable insights with waste management data visualization, reducing report generation time by 60%.• Integrated secure REST APIs to connect internal tools with third-party systems, streamlining workflows and reducing manual data entry by 50%