• Engineered robust full-stack solutions leveraging Java enhancing server-side performance for dynamic, scalable applications.• Spearheaded the integration and management of AWS cloud services, including EC2, RDS, S3, and Lambda, facilitating a scalable architecture and improving deployment workflows with CI/CD pipelines.• Developed and maintained secure applications by implementing comprehensive solutions with HashiCorp Vault, ensuring stringent data encryption and safe handling of sensitive configuration data.• Led disaster recovery strategies and implementation, establishing fault-tolerant systems with reduced RTO and RPO, ensuring high availability and resilience across critical application suites.• Utilized advanced AWS monitoring tools like CloudWatch to track performance metrics and log data, significantly reducing troubleshooting time and enhancing system reliability.• Enhanced user interface functionality and user experience by adopting Angular’s latest features and methodologies, thereby improving client engagement and satisfaction metrics.• Designed and executed database solutions with AWS RDS and DynamoDB, optimizing data retrieval and storage processes, and ensuring data integrity and scalability.• Contributed to the continuous improvement of application security and compliance by regularly updating security protocols and conducting vulnerability assessments with AWS security tools.• Collaborated in cross-functional teams using Agile methodologies, leading to a increase in productivity and faster turnaround of deliverables with reduced bugs.• Authored technical documentation and system architecture diagrams to support application development projects, ensuring clarity and consistency in team communications and project handovers.

• Used Microservices architecture with Spring Boot based services interacting through a combination of REST and Apache Kafka message brokers.• Created AWS S3 buckets, performed folder management in each bucket, managed cloud trail logs and objects within each bucket. Worked with AWS for storage and content delivery and application deployment services.• Integrated business modules using Spring Boot and Cassandra DB and Utilized Cassandra Node Connector for database persistence and interaction with Cassandra.• Used Multithreading to simultaneously process tables as and when a specific user data is completed in one table.• Deployed Spring Boot-based microservices on Docker containers using Amazon ECS.• Implemented user authentication and security for RESTful web services using OAuth 2.0.• Leveraged Spring Data JPA for seamless integration with relational databases, utilizing advanced querying capabilities and pagination for efficient data retrieval.• Designed, developed, and tested RESTful APIs using Postman, ensuring robust and efficient API endpoints for various applications.• Employed Spring Security to secure microservices endpoints, implementing OAuth2 and JWT for token-based authentication and authorization.• Configured Spring Boot Actuator for monitoring and managing microservices health, exposing operational endpoints for metrics, health checks, and application insights.• Deployed Docker contained Spring Boot Microservices into AWS EC2 container service using AWS admin console and used lambda to run applications in AWS console.• Experienced in writing and optimizing complex SQL queries in PostgreSQL, analyzing query execution plans, identifying performance bottlenecks, and implementing indexing strategies and query optimizations.• Familiar with designing and maintaining infrastructure as code using Kubernetes manifests for seamless application deployment on OpenShift.

As a Full Stack Developer at VISA, I was responsible for the development and implementation of web applications using J2EE technology, Spring MVC framework, and React.js. I developed UI navigation using Spring MVC architecture and created JSF components for the presentation layer. I also developed Micro Services utilizing Spring Boot with Spring MVC implemented Micro Services based Cloud Architecture using Spring Boot. I have experience in writing Spark Applications in Scala and Python and implemented DAO objects using JPA-Hibernate for CRUD operations. Additionally, I used Node.js as a client-side server and worked with AWS cloud services like EC2, S3, RDS, ELB, and EBS. I also followed Agile methodologies and participated in sprint planning every two weeks.

As a Senior Java Developer at Elevance Health, I followed agile software development practices such as paired programming, test-driven development, and Scrum status meetings. I developed code on new requirements using Spring MVC and Hibernate and created UML diagrams such as Use Case, Object Mapping, and Class Diagrams. I also developed APIs to support AngularJS UI migration and XSDs to build web service data. In front-end development, I used technologies like HTML5, CSS, and JavaScript. I wrote SQL queries to analyze data, developed RESTful web services using JAX-RS, and utilized JVM memory management tools to identify memory issues. I refactored bad code using best design patterns and developed sequential and UML notation documents for new tasks. Additionally, I integrated data across several applications using MongoDB (NoSQL) database and used JIRA to track project progress. I also wrote test cases and used JUnit as a testing framework in a Test-Driven Development environment. Finally, I used Spring MVC for implementing the web tier, developed web-based application service components, and configured beans using Spring IoC.

As a Java Developer I used the Spring Framework for dependency injection/Inversion of control and integration of Controller, Service, and DAO layers. I developed the front-end of the application using JSP, JSTL, Servlets, HTML5, JavaScript, jQuery, DOJO struts Tiles, and AngularJS. I also developed Single Page Applications, implemented SOAP and REST web services, and utilized AWS to integrate with Enterprise and web applications. I had expertise in implementing applications using Apache Kafka and worked with mocking frameworks such as Karma, Jasmine, and Protractor. I also used Git as Version Control System for the application.