Arun Kumar Punjala

Designed and developed multi-tier applications in an Agile/Scrum environment. Built microservices using Spring Cloud (Eureka Server, Zuul, Hystrix) and core Spring modules (Spring IOC, AOP, MVC, Security, Batch, Data). Implemented secure REST endpoints with Spring Boot and OAuth2, and integrated REST and MQ communications. Leveraged AWS S3 for storage and Elasticsearch for search capabilities. Created a shared Angular library with components published in Git, reducing dependency overhead. Implemented Kafka-based messaging and load-balanced RESTful services via Spring Gateway API and Zulu server. Deployed applications using Lambda, ECS, and Docker, and managed CI/CD with Maven, Jenkins, and Git. Worked on query optimization for MongoDB and performed authorization controls with OAuth2 across web apps and APIs.

Ensured code quality and adherence to standards in a fast-paced delivery environment. Implemented Microservices and Netflix Eureka Server using Spring Boot and Spring Cloud, and developed Spring REST controllers to return JSON to the frontend. Built J2EE multi-tier applications with Spring MVC, Spring Boot, and Spring AOP, including prospective use of Advice and Aspects. Migrated frontend from AngularJS to Angular 13, and designed dynamic, reactive forms. Created AWS Lambda functions and provisioned EC2 instances with IAM, while managing deployment pipelines with Jenkins and Maven. Collaborated through Jira to track progress and ensure timely releases.

Actively participated in Agile development, applying Java 11 and implementing Spring Boot and Spring Cloud configurations. Leveraged AWS (EC2, autoscaling, VPC) to build secure, scalable systems. Developed Spring Gateway API and Zulu server to load balance RESTful microservices. Used Angular 9/10 and migrated from AngularJS to modern Angular. Built custom MongoDB applications and PL-SQL stored procedures to migrate Oracle data to MongoDB. Integrated Kafka for messaging in a microservices architecture, and deployed Docker containers in Kubernetes clusters for scalable production environments. Created Maven build scripts to automate packaging and deployments.