• Developed multi-tier J2EE application using Spring Framework, including Spring IOC, AOP, Security, Boot, Batch, and ORM.• Implemented Microservice architecture with Spring Boot services communicating through REST and Apache Kafka.• Developed frontend and backend modules using Python on Django framework, incorporating technologies like Angular.js, Backbone.js, Ember.js, and Celery.• Integrated Python with Big Data and Analytics using Hadoop, Spark, and No-SQL databases like HBase and MongoDB.• Utilized TDD, creating JUnit tests for every functionality before writing the code, with frameworks like Mocha and JSLint.Managed Hadoop log files, benchmarked clusters, and used Kubernetes for CI/CD runtime environment.• Implemented SSO with Spring Boot, Angular for third-party application redirection, and setup Continuous Integration with Jenkins.• Worked on AWS High Availability Practices, Kubernetes management, and data transformation with Camel for Kafka integration.• Developed security mechanism with Angular 12, OAuth2.0, Spring Boot, and JWT.• Expertise in JIRA software integration with Jenkins and GitHub for real-time bug tracking and issue management.• Hands-on experience with version control using Git and Docker image/container configuration.

Designed and developed RESTful APIs using Spring Framework and Java, migrating legacy applications to Spring Boot and Microservices.Implemented various features and applications using Django, HTML, and Python, including Behavior Driven Development (BDD).Deployed microservices as Docker containers on Amazon EC2 using AWS services and administered deployments via Jenkins.Developed single-page applications with ReactJS, Redux, Webpack, and Babel, focusing on modular, reusable components.Utilized Maven for build and dependency management, integrated with Jenkins for continuous integration.Managed deployments and monitored applications using AWS services like CloudWatch.Used Kafka for building real-time data and streaming applications, and developed APIs based on Swagger/WSDL files received from backend systems.Containerized services and APIs with Docker for deployment on AWS EC2 instances and managed version control with Git and GitHub.

Developed Business and Presentation tiers using Struts, JSP, and Servlets, with coding in HTML, CSS, JavaScript for validation.Implemented Core Java and Spring AOP concepts for logging, security, and error handling.Used Hibernate Query Language (HQL) for data management through Hibernate.Developed server-side utilities using J2EE technologies like Servlets, JSP, and JDBC, with IDE support from JDeveloper and Eclipse.Implemented database procedures, packages, triggers, and Joins using PL/SQL and SQL scripts.Developed Ruby/Python scripts for monitoring Mongo database health and performing ad-hoc backups.Designed and implemented Java-related portions of the application, including EJBs for business logic encapsulation.Utilized MVC design pattern with Struts framework for web interface development.Managed application builds and deployments using ANT tools.Developed request handlers, JSPs, and Data Objects in Core Java.

• Proficient in Core Java concepts such as OOP, Collections Framework, Exception Handling, I/O, Multi-Threading, JDBC, and Generics.• Created data models and SQL scripts for application development.• Utilized core Java features like Multithreading, Collections Framework, File I/O, and Concurrency extensively.• Developed user interfaces for the policy owner module using JSPs, Struts Tag Library, and Tiles framework.• Built applications using ANT tool and utilized Eclipse as the primary IDE.• Implemented JDBC classes to interact with the database and developed DAOs (Data Access Objects) for the policy owner module.• Conducted client-side and server-side validations using Struts validations, configuring Action Form beans, and Struts Validator.• Actively participated in testing, debugging, and deployment of the application on WebLogic Application Server, including developing test cases and performing unit testing using JUnit.