Worked on a subscription orchestration platform for a large-scale streaming service that coordinated user subscriptions, eligibility validation, and account state management across multiple downstream microservices, supporting the transition from legacy systems to a unified platform. Built reactive backend services using Java 21/11/8 and Spring WebFlux to handle high-throughput request flows for payment processing and location-based eligibility, and contributed to internal tools for subscription configuration.

Designed and implemented scalable backend solutions using Spring Boot and WebFlux, focusing on clean, efficient, and maintainable code. Created and maintained REST APIs, ensuring reliable service-to-service communication across the platform.

Developed unit and integration tests using WireMock with recorded JSON cassette fixtures, improving test reliability and reducing dependency on live services. Documented and validated APIs using Swagger and tested endpoints using Postman.

Worked closely with team members to deliver features, rollouts and API changes, while troubleshooting issues and improving system reliability through testing and debugging.

Worked on a financial transaction processing system that managed secure payments, account activities, and transaction history using microservices built with Java 17 and Spring Boot. Built interactive user interfaces in Angular 16 to display transaction details, payment statuses, and account summaries with dynamic updates. Implemented business logic to validate transactions, detect anomalies, and enforce financial compliance rules within the system.

Worked on an online banking system that supported secure transactions, account management, and real-time fund transfers using microservices built with Java 11 and Spring Boot. Developed GraphQL APIs to retrieve precise banking data to improve efficiency and reduce unnecessary data transfers. Implemented security measures, including multi-factor authentication and transaction validation, to protect user accounts and ensure compliance with banking regulations.

Worked on a healthcare management platform that supported secure patient data handling, claims processing, and provider services using Java 8 and Spring Boot microservices. Developed and maintained SOAP and REST APIs to enable seamless integration with external healthcare systems, ensuring reliable data exchange and regulatory compliance. Built backend services using Hibernate and JPA, handling sensitive healthcare data with strong security practices including JWT based authentication and Spring Security.

Implemented asynchronous messaging using Kafka to improve system scalability and balance workloads across services. Improved application performance by optimizing Oracle database queries and indexing strategies, significantly reducing data retrieval times. Migrated legacy applications from Apache Tomcat to AWS EC2 and containerized services using Docker, deploying them on AWS ECS for better scalability and consistent environments.

Developed Angular 12 components with Bootstrap to enhance user experience and accessibility. Configured CI/CD pipelines using Jenkins and implemented canary deployments to safely release new features. Managed API traffic using Spring Cloud Gateway and applied circuit breaker patterns to ensure system resilience during failures.

Improved system observability by integrating AWS CloudWatch and Splunk for logging and monitoring, enabling faster debugging and performance tracking. Wrote unit tests using JUnit and Mockito to ensure code quality and prevent regressions. Also integrated AWS S3 for secure storage of healthcare records with lifecycle policies to optimize storage costs.