SAJJARAO SRIHARSHA

Worked for CITI BANK Client

Microservices & Backend Development

• Collaborated with Citi clients to gather requirements, ensuring alignment with business objectives and delivering high-quality software solution.
• Diagnosed and resolved bugs in existing applications, improving system stability and performance through meticulous troubleshooting and testing.
• Applied OOP principles (Abstraction, Inheritance, Polymorphism, Encapsulation) to structure scalable and maintainable service layers, reducing code duplication by 30%.
• Developed microservices using Spring Boot, improving system performance by 35%.
• Utilized Spring Boot for backend development, creating RESTful APIs that integrate seamlessly with Angular front-end applications.
• Reduced API latency by 25% through optimized service architecture.
• Enhanced user experience by mapping internal exceptions to meaningful HTTP status codes (e.g., 400, 404, 500) and messages.
• Integrated SLF4J logging in exception handlers, enabling better monitoring and faster root cause analysis via Splunk dashboards.
• Developed Postman test collections for end-to-end API validation, automating response and status code checks to prevent regression issues.
• Improved test coverage by writing unit and integration tests for exception scenarios using JUnit and MockMvc.

DevOps & Cloud Deployment

• Automated Jenkins pipelines, cutting deployment errors by 40%.
• Containerized services with Docker and deployed on OpenShift/PCF.

System Modernization

• Migrated legacy systems from Java 8 to Java 17
• Applied Java Platform Module System (JPMS) to enforce modular design, enhancing codebase maintainability and compile-time safety.
• Upgraded from outdated Java libraries and frameworks to modern equivalents (e.g., replacing XML config with Spring Boot annotations), reducing startup time and memory usage.