• Working with a team of developers on FINTECH projects, facilitating seamless communication between clients and internal teams to ensure project requirements were met on time and within scope.• Designed and implemented backend logic using Java and Spring Boot, utilizing the Collection Framework and Multithreading to enhance performance and scalability for high-stakes financial transactions.• Developed and maintained RESTful APIs with Swagger documentation, streamlining integration between front-end and back-end components for smooth data flow and usability.• Used microservices approach to enhance scalability, maintainability, and efficient functionality management.• Secured applications with robust authentication and authorization by integrating OAuth and Spring Security, safeguarding sensitive financial data.• Optimized backend Java code, achieving a 20% improvement in data processing speed for real-time financial data handling.• Managed large datasets with MongoDB and MySQL, ensuring consistency, availability, and efficient data management essential for FINTECH applications.• Employed Maven for project management and dependency handling, alongside SonarQube for code quality checks, reducing technical debt by 25%.• Conducted comprehensive code reviews based on SonarQube metrics, enhancing code quality by 20%, ensuring maintainability, and adhering to best practices.• Tested API performance with JUnit and JMeter, optimizing response times by 40%, reducing latency, and improving overall system efficiency and user experience.• Developed front-end components using ReactJS and JavaScript to create interactive and responsive user interfaces, enhancing user engagement and providing cross-browser compatibility.• Implemented Redux for efficient state management, supporting scalable data flow and maintaining seamless front-end responsiveness.• Collaborated with UI/UX designers to deliver visually appealing and intuitive interfaces aligned with brand guidelines.

• Collaborated with cross-functional teams, including developers and product managers, to thoroughly understand project requirements and ensure comprehensive test coverage, resulting in improved product quality and faster release cycles.• Hands-on experience with Core Java, including Multithreading, File Handling (I/O), Data Structures, Collections, and Garbage Collection, ensuring optimized performance and memory management for complex applications.• Proficient in Java 8 features, such as Parallel Streams, Lambda Expressions, Functional Interfaces, and Filters, enhancing code efficiency, readability, and enabling parallel data processing for improved application performance.• Implemented Spring Security to secure method calls and RESTful web services, ensuring robust authentication and authorization protocols that safeguard sensitive data.• Designed and built database schemas and table structures to support the backend of web applications, ensuring efficient data storage, retrieval, and management for high-volume transactional systems.• Estimated work hours and tracked project progress using Scrum methodology, playing an active role in sprint planning, backlog grooming, and daily stand-ups, which improved team productivity and ensured timely project delivery.• Optimized database queries for subscriber data fetching, improving response times by 30% through indexing and query tuning techniques.• Developed payment gateway integration, ensuring secure transaction processing and reducing payment errors by 15%.• Created detailed audit reports, improving data accuracy and traceability by 25%, contributing to compliance with industry standards.