Hari Krishna Chirumamila

Designed and implemented RESTful and GraphQL APIs using Java 17, Spring Boot, and GraphQL Java, enabling seamless integration with Shopify APIs managing over 5 million records with sub-150ms response times. Achieved high test coverage and stable builds with JUnit, Mockito, TestNG, and Jasmine. Developed secure microservices with OAuth 2.0, JWT, and Spring Security. Built interactive UI dashboards with React.js and Material-UI while improving UX performance and WCAG accessibility. Managed scalable infrastructure deployments on GKE and AWS ECS using Docker, Helm, Terraform, and OpenShift. Reduced defects by 30% and ensured 100% sprint delivery through Agile practices and CI/CD. Monitored system performance with Prometheus, Grafana, and ELK Stack, reducing MTTR by 40%.

Designed and implemented RESTful and GraphQL APIs using Java 17, Spring Boot, GraphQL Java, and SOAP, facilitating seamless integration with Shopify Admin APIs managing over 5 million product and order records with sub-150ms response times. Achieved over 95% test coverage, developed secure microservices with Spring Security and OAuth 2.0, built interactive UI dashboards using React.js and Material-UI enhancing UX performance by 20%, orchestrated deployments on GKE and AWS ECS using Docker and Helm. Improved system performance monitoring with Prometheus and Grafana, enabling alerting and incident response and reduced production defects by 30% through Agile and CI/CD practices.

Designed and implemented RESTful and GraphQL APIs using Java 17, Spring Boot, GraphQL Java, and SOAP, enabling seamless integration with Shopify Admin APIs and handling over 5 million product and order records with low latency. Achieved >95% test coverage using JUnit 5, Mockito, and other testing frameworks to ensure stability and support TDD. Developed secure microservices with Spring Security, OAuth 2.0, and JWT for role-based access control. Built interactive UI dashboards with React.js, Redux, and Material-UI, improving UX performance and achieving WCAG accessibility compliance. Orchestrated microservices deployment on GKE and AWS ECS with scalable infrastructure using Docker, Helm, Terraform, and OpenShift. Reduced production defects by 30% and maintained 100% sprint delivery rate. Monitored system performance using Prometheus, Grafana, and ELK Stack, reducing MTTR by over 40%. Processed high-volume Shopify datasets using Postman and Shell scripting to enhance catalog and order sy