Played a key role in upgrading a mobile payment processing system, achieving a 20% reduction in transaction times and enhancing user satisfaction through seamless, efficient payment experiences using the following key contributions :

Backend Optimization: Leveraged Spring Boot and Hibernate to streamline development, improve maintainability, and optimize database queries, reducing query execution time by 25%.

Responsive Interfaces: Designed intuitive, user-friendly interfaces with ReactJS and JavaScript, reducing user friction by 25% and boosting successful transactions by 20%

High-Performance Processing: Utilized Java Concurrency and multi-threading to optimize asynchronous transaction handling, improving system responsiveness by 35%.

Event-Driven Architecture: Integrated Apache Kafka for seamless communication between microservices, ensuring scalability and high throughput for transaction events.

Data Management: Configured MySQL and Amazon S3 for efficient relational data storage and archiving, enabling faster access and improved system monitoring.

Secure Transactions: Implemented Spring's declarative transaction management to ensure data integrity and rollback functionality during high-volume operations.

Agile Collaboration: Worked closely with cross-functional teams in Agile sprints to deliver high-quality features on schedule.

Developed and managed a comprehensive web-based inventory management system to streamline order processing, real-time stock tracking, and order fulfillment, enhancing supply chain efficiency using the following key contributions :

Microservices Architecture: Designed a decoupled, scalable system for managing product catalogs, orders, and inventory tracking.

Frontend Development: Built responsive and dynamic UIs using Angular and Vue.js, improving user engagement by 35%.

Backend Development: Implemented core business logic in Java and used Spring Boot for secure, ACID-compliant transaction handling.

Data Handling: Leveraged MongoDB for flexible schema designs and faster database operations.

API Optimization: Designed pagination and filtering mechanisms to enhance performance, reducing API response time by 40%.

Security Enhancements: Implemented OAuth 2.0 and JWT for robust API security.

Automated Testing: Integrated JUnit, Mockito, and Selenium into CI pipelines to ensure defect-free deployments.