Madhu K.

Developed REST APIs and services for file uploads to S3, data processing, and database insertion, triggered by file uploads. Implemented calculation services, storing results in MongoDB, and generated performance reports at various levels. Enhanced system performance by tuning queries, implementing caching for master data, and converting Oracle Form Builder procedures/packages into microservices. Utilized CloudWatch for log monitoring, and SonarQube/SonarLint for code quality management. Guided the team on requirement analysis and assisted BAs in creating user stories for the development team.

Developed Card Control and Card Tracker APIs for Barclaycard US using Spring Boot. Utilized microservices architecture to design scalable backend services. Designed API contracts for credit card onboarding and integration. Implemented RESTful services and integrated them with databases (e.g., MySQL, MongoDB). Optimized application performance with Spring Security and JWT for authentication and authorization. Used JPA/Hibernate for database interactions and data persistence. Implemented transaction management and ensured data consistency. Integrated third-party services and external APIs, improving backend functionality. Wrote unit and integration tests using JUnit and Mockito for code quality. Monitored application performance and logs with CloudWatch and ensured robust logging for debugging.

Collaborated on Spring Framework and Hibernate applications, implementing Java-based solutions and data structures. Developed REST APIs for integration with Android, SCADA devices, and various financial services. Engineered data processing engines, file handling, and encryption functionalities to enhance system security and performance. Implemented Agile methodologies for requirement analysis, development, and delivery, ensuring timely project completion. Created web services for Mutual Funds and Loans, integrating SEBI APIs into the system for improved functionality. Troubleshot production issues, coordinating with support teams to resolve failed cases and optimize system performance. Developed scripts to track user journey completion, improving customer experience and minimizing incomplete transactions.

Upgraded DTO mapping from Hibernate Entity to annotations for improved data handling. Transitioned from Struts 1.2 to Struts 1.3 for better performance and maintainability. Managed builds and releases using Ant Build Tool for streamlined deployment. Enhanced and debugged production systems to improve stability and performance. Developed a frontend questionnaire page with responses stored in a database. Created XML-based mail templates to trigger client-specific emails based on expiration dates. Integrated new features and ensured seamless functionality between front-end and back-end components. Wrote unit and integration tests to ensure code quality and system reliability.