Frontend Development: Implemented the design wireframe using Angular 14, upgrading from Angular 12 to Angular 14, including component migration and router module updates. Developed customized UI components and services for user data storage and retrieval using Angular 6 and HTTP services.Backend Development: Built and exposed backend services using Spring Boot, integrating complex services, database layers, and controller classes. Implemented Spring Boot Actuator for monitoring and tracing.Node.js Integration: Developed key services for authentication and authorization, initially using LDAP and later migrating to Ping Access SSO. Managed session maintenance and ensured secure API interaction.CI/CD & Deployment: Actively involved in CI/CD deployment, including configuring Jenkins pipelines and deploying on Kubernetes clusters. Integrated Dynatrace for performance monitoring.API & Microservices: Implemented API Gateway solutions using AWS API Gateway and developed microservices with Spring Boot. Integrated Spring Cloud-Netflix ZUUL for service communication and Apache Kafka for event streaming.Database & NoSQL: Managed data storage and retrieval with Java EE, JDBC, Hibernate, and NoSQL databases like CouchDB and DynamoDB. Deployed and maintained high-availability NoSQL databases in cloud environments.Testing & Quality Assurance: Wrote and executed test cases using Jasmine, Karma, JUnit, and Jenkins, maintaining high code coverage. Automated testing and CI processes for both Java and Node.js.Cloud & Infrastructure: Designed, configured, and deployed AWS infrastructure, utilizing services like EC2, S3, Lambda, and CloudWatch. Deployed Docker and OpenShift for scalable application management.

Microservices Development:Designed and developed business components using Spring Boot for microservices architecture.Implemented project structure based on Spring MVC pattern, using Spring Boot, and persisted data to MongoDB with Spring Data.Node.js and MongoDB Development:Implemented server-side code with Node.js and Express framework to interact with MongoDB, utilizing the Mongoose package.Worked extensively on MongoDB concepts and tools like locking, transactions, indexes, and MongoDB internal tools.React.js Development:Developed screens for the frontend using React.js, Redux architecture, and predefined components from NPM.Established RESTful APIs using Node.js and Express.js for the backend.OAuth 2.0 and Webpack:Implemented OAuth 2.0 authentication protocol and provided implementation guidelines for enterprise web API security.Utilized Webpack for bundling JavaScript applications and dependencies.Angular Development:Developed UI application initially using Angular 11.0 with customized components.Spring Boot and Java Development:Developed microservices-based APIs using Spring Boot and Spring Data.Stored high-volume transaction data in NoSQL databases using Spring Data.Docker Implementation:Designed and built large-scale global Docker Container-as-a-Service.Implemented Docker containerization for the enterprise build system.

Java Development:Worked extensively with Java 8 features such as Lambda Expressions, Functional Interfaces, Stream API, Time API, and improvements on Collection, Concurrency, and IO.Developed Restful Web APIs, exposing endpoints using HTTP methods like GET, PUT, POST, and DELETE.Multithreading and Concurrency:Utilized multithreading for real-time data processing from Zacks API, improving performance significantly.Employed concurrency package of collections to ensure thread safety.Testing and Integration:Used SOAPUI for testing send and receive XML data.Worked with JMS Queues for point-to-point mode communication.Database Development:Written complex SQL queries, Stored Procedures, and Functions in PL/SQL for data manipulation.Developed Servlets for server-side transactions and used AJAX for server-side processing without page refresh.Support and Maintenance:Provided 24x7 support to applications in pilot and production phases, including bug identification and fixing, investigating application behavior.Technology Migration:Led the migration from Angular 8.0 to Angular 10.0 to leverage upgraded features such as Angular Components and Angular Routers.Frontend Development:Created web user interfaces using HTML5, DHTML, CSS3, and JavaScript following W3C standards and ensuring browser compatibility.Utilized HTML5 wireframes with CSS for dynamic rendering and enhanced user experience.Framework and Tools:Developed applications using Spring JPA, Angular 8.0, Spring, and Hibernate.Used Maven for compiling and building code.Leveraged Jenkins as a Continuous Integration tool for deploying Spring Boot with Microservices to Pivotal Cloud Foundry (PCF).

Java Development:Utilized Java Message Queue (JMS) for messaging services and exchanging information.Developed SOAP web services (JAX-WS) for sending and retrieving data from different applications.Framework Experience:Designed and integrated full-scale solutions with Struts and Hibernate frameworks.Implemented the MVC architectural pattern using Struts Framework, including JSP, Servlets, and Action classes.Database Skills:Built and maintained SQL scripts, indexes, and complex queries for data analysis.Developed DAO pattern to retrieve data from databases and created stored procedures for report generation.Testing and Quality Assurance:Involved in unit testing using JUnit frameworks and coordinated with testing teams for bug fixing.Used JavaScript and jQuery for client-side validation and UI enhancement.Deployment and Configuration:Deployed applications on client Linux servers and worked with WebLogic Server for application deployment.Utilized ANT as a build tool and worked in an agile work environment.Logging and Monitoring:Used Log4j for logging errors, messages, and performance logs.

Java Development:Designed, coded, and tested key modules of projects using Java OOPS concepts.Developed intermediary methods to manage data exchange between objects.Implemented JDBC to establish connections to MySQL databases and retrieve necessary data.Software Development Methodologies:Experienced in software development using SDLC methodologies, Object-Oriented Technologies, UML, and Agile methodologies such as Extreme Programming (XP) and Scrum.Framework and Technology Experience:Played a key role in designing and developing applications using J2EE, Struts, and Spring technologies/frameworks.Consumed third-party web services APIs and implemented SOAP Web Services for data ordering information with external vendors.Utilized front-end editors like Dreamweaver, Sublime Text2, and Microsoft Expression Web.Testing and Deployment:Tested and deployed applications on the Tomcat Application Server.Used Log4J for error tracking and version control software like SVN for configuration management.