Hemakumar Sriramulu

Designed and developed scalable microservices-based applications using Java 21, Spring Boot 3.x, Spring Cloud, and API gateway patterns. Built secure RESTful and GraphQL APIs using Spring Security with OAuth 2.0, JWT, and OpenID Connect, and integrated SAML 2.0 SSO through PingFederate while maintaining legacy SOAP integrations. Delivered responsive front ends with Angular, React, TypeScript, HTML5, and SCSS for high-traffic banking platforms. Used AI coding assistants and agentic workflows (Claude Code, GitHub Copilot, Cursor) for implementation, test generation, debugging, and code review—verifying outputs with tests and maintaining quality/security standards. Implemented event-driven architecture with Kafka and AWS SNS/SQS/JMS, and deployed on AWS (EC2, S3, Secrets Manager, Cognito, Lambda, RDS, EKS) using Docker and Kubernetes. Automated infrastructure and deployments with Terraform, Helm, Ansible, Jenkins, and GitHub Actions; improved test coverage from ~70% to ~85% and reduced

Engineered enterprise backend services using Java 17, Spring Boot, Spring Cloud, and Spring Security, building secure REST, GraphQL, and SOAP APIs with OAuth2/JWT and LDAP integration. Developed modern user interfaces with React.js, Angular, and TypeScript, and led a legacy-to-modern migration by moving JSP/jQuery/Ember.js pages to React while keeping production systems live. Deployed cloud-native applications on Microsoft Azure using Docker and Kubernetes, and implemented Infrastructure as Code with Terraform, Helm, and Ansible. Built CI/CD pipelines with Jenkins, GitHub Actions, and Azure DevOps, and designed data layers using MySQL/PostgreSQL/Oracle and Redis for caching and high-throughput scenarios. Supported event-driven and real-time processing using RabbitMQ and gRPC for telematics and streaming use cases.

Architected and built microservices using Java 11, Spring Boot 2.x, Spring Cloud, and API gateway patterns. Developed persistence layers with Hibernate/JPA and Spring JDBC across PostgreSQL, MySQL, Oracle, MongoDB, and DynamoDB, ensuring correct transaction management and efficient querying. Built responsive front ends using React.js and Angular and integrated them via REST and Node.js. Implemented REST and SOAP integrations with internal and third-party systems, documented and tested with Postman and Swagger. Leveraged AWS services (EC2, S3, SNS, RDS, Lambda, EKS, CloudWatch) along with Docker and Kubernetes for scalable deployments. Delivered CI/CD automation with Jenkins and GitHub Actions and automated provisioning with Terraform and Helm. Ensured quality using JUnit 5, Mockito, Selenium, Cypress, REST Assured, and SonarQube analysis.