SUMMARY

• Over 8+ years of experience in Object Oriented development, implementation and maintenance of web and distributed Enterprise applications using Java/J2EE technologies.
• Worked on Design and Analysis (OOAD) resulting in Use Case View (Use Cases & Actors) & Logical View (Class Diagram and Sequence Diagram) using UML.
• Expertise working with technologies: Core Java, Struts, Spring MVC, Spring Batch, Spring Boot, Spring JDBC, Spring Data JPA, Hibernate, Spring Cloud, Spring Security using JWT, oAuth 2.0.
• Experienced in using Spring cloud and NETFLIX technologies like Eureka, Ribbon, Zuul.
• Well versed with core Java concepts like collections, multithreading, serialization, Java beans.
• Proficient in Java/J2EE Design Patterns including Singleton, Command, Session Facade, Model View Controller (MVC), Data Access Object, Factory, Adapter, Observer and JMS components.
• 2+ years of experience on AWS platform and its dimensions of scalability including Amazon EC2, Amazon S3, AWS Lambda Serverless Computing Platform.
• Strong experience on DevOps essential tools like Docker, Kubernetes, Subversion, GIT, Jenkins.
• Hands - on expertise in front-end development utilizing JavaScript frameworks such as jQuery, React, Angular as well as front end technologies HTML 5, CSS 3, AJAX, and JSON.
• Extensive experience in developing Microservices using Spring Boot and followed domain driven design model
• Experience in handling messaging services using Apache Kafka and message brokers such as ActiveMQ, JMS.
• Having Good Experience in Object Oriented Concepts withJava.
• Well Versed Experience in database connectivity for databases like IBM DB2, Oracle, SQL Server, and MySQL and NoSQL databases like MongoDB and Cassandra.
• Experience with XML, XSD, JAXB, WSDL, SOAP technologies.
• Extensive knowledge of XML-based standards and protocols such as WSDL and SOAP, Service Oriented Architecture SOA, development of XSD schemas and implementing both SOAP and REST web services.
• Hands-on experience with JUnit in performing unit tests and Experience in testing web services like Postman, SOAP UI, Swagger UI and service level testing like Cucumber and Selenium for UI automation.
• Hands-on experience using Messaging Services like JMS, MQ Series.
• Experience in implementation of business applications using Web Sphere, JBoss and Tomcat.
• Experience in using Maven, Gradle, Jenkins, Log4j and JUnit.
• Extensive experience in using Java 8 features like functional interfaces, Lambda Expressions, streams.
• Experience in implementing the full life cycle of the software development process (SDLC).
• Extensive experience with design and development of J2EE based applications involving technologies such as Java Server Pages (JSP), Java Messaging Service (JMS), Java Database Connectivity (JDBC), Java Naming and Directory Interface (JNDI).
• Extensive knowledge of XML-based standards and protocols such as WSDL and SOAP, Service Oriented Architecture SOA, development of XSD schemas and implementing both SOAP and REST web services.
• Hands-on experience with JUnit in performing unit tests and Experience in testing web services like Postman, SOAP UI, Swagger UI and service level testing like Cucumber and Selenium for UI automation.
• Experience in Integrated Development Environment (IDE) such as Eclipse, Spring STS, IntelliJ IDEA, Oracle SQL Developer and Compass Isolated to connect through Mongo Client
• Used version controller tools like Subversion, GitHub, CVS.
• Experience with test-driven development using various unit testing frameworks such as JUnit 4.x and knowledge of Log4j tools.
• Solid understanding of networking protocols and topologies.
• Experience in Database Design, Creation and Management of Schemas, writing Stored Procedures, Functions, SQL queries.
• Extensive Experience in working with various databases like Oracle (SQL, PL/SQL), DB2, MySQL, NoSQL.
• Install, configure, test, monitor, upgrade, and tune new and existing PostgreSQL databases.
• Good Knowledge in the functional usage and deployment of applications in Apache Tomcat.
• Building and Deployment of EAR, WAR, JAR files on test, stage and production servers.
• Experience in implementing full life cycle of software development process (SDLC)
• Experience working with Agile SCRUM methodology.
• Good at Documenting and Understanding User requirements and System Specifications.

TECHNICAL SKILLS

Languages/Utilities: Java, PL/SQL, XML and UML.

JAVA Technologies: Core Java, Multithreading, JDBC, JNDI, Java beans, J2EE, Junit, MavenMockito, Ant, Log4j.

Frameworks: Spring 4.x, Spring Boot, Spring Batch, Struts 2.0/1.x, JSF and HibernateSpring Data JPA, RX Java.

Design Patterns: JSTL, Singleton, MVC, Business Delegate, DAO, DTO, Session Façade.

Web Services: SOAP & REST.

Web Technologies: Applets, JSP, HTML5/4, CSS3, JavaScript, JSON, AJAX and jQuery, Angular 8, React JS

Databases: MYSQL, Oracle, SQL server, MongoDB.

Middleware: Servlets, Java Beans, RMI, EJB, JMS.

IDEs and Tools: Eclipse, IntelliJ IDEA, Maven, Gradle, UML, Log4j.

Version Control Tools: Subversion, GitHub.

Web/Application Servers: Apache Tomcat, IBM WebSphere, JBoss.

Methodologies: Waterfall, Agile.

Operating Systems: Windows 7/8/XP, Linux, UNIX.

Cloud Technologies: AWS Cloud Components S3, EC2, Lambda, Elastic Beanstalk, ECS, RDS.

PROFESSIONAL EXPERIENCE

Confidential, Pittsburgh, PA

Senior Full Stack Java Developer

Responsibilities:

• Involved in various phases of Software Development Life Cycle (SDLC) of the application like requirement gathering, Design, Analysis and Code development.
• Worked in Agile framework as an individual contributor Responsibilities include - Interaction with Business team in story grooming, reviewing story/acceptance criteria.
• Used Java8 features like Streams and Lambda expressions and Maintained Interface compatibility and concurrency in the project using Java 8 new features like default, static methods and Concurrency API.
• Used Java 8 Method References feature to point to methods by their names.
• Used Microservice architecture with Spring Boot based services interacting through a combination of REST and Apache Kafka message brokers and worked with Kafka Cluster using Zookeeper.
• Closely worked with the Kafka Admin team to set up Kafka cluster setup on the QA and Production environments.
• Converted a Monolithic app to Microservices Architecture using Spring Boot 2.0 using 12-factor app methodology. Deployed, Scaled, Configured, wrote manifest file for various Microservices in Open shift/Kubernetes environment.
• Generated Metrics with method level granularity and Persistence using Spring AOP and Spring Actuator.
• Used REST and SOAP Web Services to acquire credit history information.
• Involved in consuming RESTful web services using AngularJS to render JSON data.
• Wrapper developed inPythonfor instantiating multi-threaded application and running with other applications.
• Developed batch processing applications using spring batch deployed on AWS.
• Worked on AWS Elastic Load Balancing, created EC2 instances and worked on autoscaling the instances.
• Used CFT templates for creating AWS stack, S3 buckets, Roles and Policies.
• Worked on CHEF scripts for automation and bootstrapping of applications on EC2 instances.
• Rewrite existing applications and migrated applications and the to the AWS cloud as part of modernization project.
• Designed and documented CI/CD tools configuration management.
• Experience with various MVC Java frameworks like Angular 8,Node.JS, Bootstrap etc.Responsible for developing the partner Homepages using HTML5, CSS3, JavaScript, React JS, Node JS and jQuery.
• Developed crypto rest services using NodeJS and integrated services.
• Developed web applications running on NodeJS using the Express framework,Vue.jsand Backbone.jswith Mustache.jsfor front end MVC/templating.
• Developed dynamic responsive Web Application by integrating Angular with Bootstrap which is further integrated with Web Services andVue.js.
• Developed user interface by using the React JS, Flux for SPA development.
• Worked in using React JS components, Forms, Events, Keys, Router, Animations and Flux concepts.
• Implemented the function to send and receive AMQP messages on RabbitMQ synchronously and asynchronously and send JMS messages to Apache ActiveMQ on the edge device.
• Used GIT as source code collaborator and GitHub for maintaining code and documentation.
• Migrated the Application from Spring MVC to Spring Boot.
• Experience in developing scalable solutions usingNoSQL databases CASSANDRA, MongoDB, DynamoDB.
• UsedNOSQLdatabase MongoDB to store data of reporting Application which is of unstructured data.
• Involved in capacity planning and requirements gathering for multi data center Cassandra cluster
• Used MongoDB document-oriented database to store data.
• Implement a production ready, load balanced, available and fault tolerant Kubernetes infrastructure.
• Worked with containerization tools, can implement transition to Docker and develop distributed cloud systems using Kubernetes and Helm package manager for Kubernetes.
• Migrate Data from Elasticsearch-1.4.3 Cluster to Elasticsearch-5.6.4 using Logstash, Kafka for all environments.
• Elasticsearch and Logstash performance and configuration tuning.
• Developed and deployed UI layer using JSP, XML, JavaScript, HTML5, Ajax, jQuery, React JS and CSS3.
• Used Spring Framework for DI/IOC and ORM components to support the Hibernate tool.
• Used Spring DAO for developing the data access layer.
• Integrated Hibernate 4.1 along with Spring Data Redis and used annotations for mapping ORM classes to DB.
• Developed Hibernate mapping file and the HQL queries for retrieving data from the Oracle database.
• Involved in Configuring web.xml and Spring-config.xml according to the Spring framework.
• Developed application based on the MVC Architecture using Spring MVC to define Dispatcher Servlet, Controller, model and View Resolver.
• Used Core Java classes to implement business logic.
• Responsible for configuring, integrating, and maintaining all Development, QA, Staging and Production PostgreSQL databases within the organization.
• Used Maven to build war and ear files to deploy on JBoss Application Server 7.
• Monitored and fixed the error logs using Log4J, configured log4j.xml.
• Followed Test Driven Development (TDD) and wrote server-side test cases using JUnit 4.12.
• Implemented agile development process on Software Development Life Cycle.
• Participated in Docker and AWS workshops to gain experience with the emerging technologies.
• Actively participated in the daily SCRUM meetings to produce quality deliverables within time.

Environment: Java 1.8,11, Design Patterns, Servlet, JSP, Spring MVC 3.2, Spring Boot, hibernate 4.1, Web services - SOAP & Restful, WSDL, Oracle 11g,Maven, JBoss 7, EJB 3.0, JMS, XML, SVN, Log4J,Eclipse 4.0, HTML5, Java script, AJAX, jQuery, React JS, JUnit 4.12, Agile Methodology, SCRUM.

Confidential, Pittsburgh, PA

Full Stack Java Developer

Responsibilities:

• Involved in analyzing a request, design, development, unit testing and implementation.
• Participated in requirement gathering and designed applications using UML. Elaborated on the Use Cases based on business requirements and was responsible for creation of Class Diagrams, Sequence, Collaboration and Activity Diagrams.
• Responsibilities included development of new modules of the application such as Web using J2EE technologies and Spring Framework.
• Implemented service layer using Spring IOC and annotations and Controllers using Spring MVC.
• Implemented DAOs, entities using Hibernate API and Hibernate QL.
• All the functionality is implemented using Spring IO / Spring Boot and Hibernate ORM. Implemented Java EE components using Spring MVC, Spring IOC, spring transactions and spring security modules.
• Developed Hibernate mapping file and the HQL queries and Criteria API for retrieving data from databases.
• Created automated pipelines in AWS pipeline to deployDockercontainers in AWSECSusing serviceslikeCloudFormation,CodeBuild,CodeDeploy,S3andpuppet.
• Built S3 buckets and managed policies forS3buckets and used S3 bucket and Glacier forstorageandbackupon AWS.
• Configured AWS Multi Factor AuthenticationinIAMto implement 2 step authentication of user's access using Google Authenticator and AWS Virtual MFA.
• Development ofPythonAPIs to dump the array structures in the Processor at the failure point for debugging
• Worked with the team to develop POJO’s using spring framework for dependency injection and integrating it with Hibernate and Spring Data JPA.
• Extensively worked on N-Tier architecture systems with application system development using Java8, J2EE, JSP, Servlets, Struts, JMS, EJB, JDBC and Multithreading.
• Developed Session Bean/Entity Beans for MPI.
• Responsible for creating efficient design and developing User Interaction screens using HTML, CSS3, Bootstrap, JavaScript, Angular 6 and Node JS.
• Enhanced application performance by Angular 6 Component based development in view of future Angular framework transitions.
• Created documentation for all the components which is included in the React-Bootstrap page.
• With the concept of React JS Worked on usage metrics and also end to end events tracing for analysis purpose.
• BuildingLinux servers (web-logic application, apache, DB servers etc)in large quantity as per EDC and Non-EDC production requirement as well as App/Dev requirement.
• Developed DAO layer exposing access to MongoDB.
• Worked with containerization tools, can implement transition to Docker and develop distributed cloud systems using Kubernetes and Helm package manager for Kubernetes.
• Design, build and manage the ELK (Elasticsearch, Logstash, and Kibana) cluster for centralized logging and search functionalities for the App.
• Written and Maintained Automated Salt scripts for Elasticsearch.
• Excellent Knowledge of Cassandra Architecture, Cassandra data modeling & Monitoring Cassandra using OpsCenter.
• Can handle commissioning and decommissioning nodes along with monitoring of Cassandra Cluster.
• Have Knowledge on Apache Spark with Cassandra.
• Closely worked with the Kafka Admin team to set up Kafka cluster setup on the QA and Production environments.
• Used Spring Kafka API calls to process the messages smoothly on Kafka Cluster setup.
• Used AJAX, JSON to send requests to the server to check the functionality of the websites and for storing and exchanging information between browsers and servers.
• Developed User Interface using Struts, JSP, Java Script, Ajax and JSON.
• Expertise with web-based GUI architecture and development using HTML, CSS, DHTML, AJAX, JavaScript XML and Tag libraries (JSTL).
• Developed build scripts to generate the EAR file with Maven.
• Developed REST web services using JAX-RS API to send data from Oracle Database in JSON Format
• Developed soap web services using cuff to interact with MPI Services.
• Implemented REST Microservices using spring boot.
• Used Soap UI for testing Web Service.
• Used CVS tool to maintain version control.

Environment: Java 8, J2EE, Spring, Hibernate, Spring Data JPA, Web Services, PowerShell, WebLogic Portal, JMS, EJB, AJAX, Struts, JSP, Java beans, Web Services, Apache Kafka, WebLogic Application Server, SOAP, XML, JAXP, JNDI, UML, CSS, DHTML, Oracle, Java Script, Cassandra, HTML.

Confidential, Plano, TX

Java Developer

Roles & Responsibilities:

• Involved in design, development, testing, and production deployment phases of the project using Agile methodology.
• Involved in Analysis and design of the project which is based on OOAD and Design patterns.
• Developed the MVC architecture using Struts Framework.
• Wrapper developed inPythonfor instantiating multi-threaded application and running with other applications.
• Development of test framework using thePython.
• Extensively worked on the Spring JDBC and Implemented a Module called Quote Service.
• Implemented the Business Logic in the Quote Module to insert the Data in the Tables.
• Used Spring JDBC to implement SQL Queries to insert, modify or delete the records in the database.
• Responsible for pagination for the application by integrating Spring framework with AngularJS.
• Involved in the application development using Spring MVC module and responsible for developing DAO layer.
• Used EJB 3.0 Stateless beans to generate pick lists and to run Asynchronous Batch Jobs.
• Implemented Log4j and logger for Debugging.
• Apache CXF is used along with Maven to generate WSDL and JAXB Objects.
• Used Hibernate to develop an application to manage reference data to store/retrieve data out of the database.
• Used IBM WebSphere as the Application server to load the application.
• Worked with SOA to integrate the Backend with the application.
• Used Soap UI for testing Web Service.
• Utilized Windows PowerShell to create a master table of contents page for the desktop support knowledge base, allowing for expedited troubleshooting and research of recurring desk side issues.
• Created build and deployment scripts usingMaven.
• Implemented the view layer using JSP and JavaScript, HTML, CSS.
• Used Struts Validator Framework to do server-side validations.
• Worked with Design Patterns like Session Façade, Front Controller, and DTO and DAO pattern.
• Designed and developed Servlets, JSP’s to implement business logic and deployed them on the Web Logic Server.
• Developed Restful web services that managed the multiple parallel client access scenarios.
• Involved in the unit testing using JUnit test cases.

Environment: Java 1.7, HTML, CSS, JavaScript, Ajax, AngularJS, Spring MVC, Spring JDBC, AOP, Hibernate 3.0, SOA (SOAP, WSDL, REST, Web Services), PowerShell AngularJS, EJB 3.1, JMS 1.1, Agile Methodology, web sphere 7.5/8.x, JUnit, Soap UI, Maven, Jenkins, Jira.

Confidential

Java Developer

Responsibilities:

• Implementing project using Agile SCRUM methodology, involved in daily standup meetings and sprint showcase and sprint retrospective.
• Developed the web tier using JSP, Spring MVC.
• Used Spring Framework for the Implementation of the Application.
• Integrated Spring Dependency Injection (IoC) among different layers of an application.
• Used Hibernate for object Relational Mapping and used JPA for annotations.
• Implemented REST web services using Apache-CXF framework.
• Involved in creating various Data Access Objects (DAO) for addition, modification and deletion of records using various specification files.
• Implemented interface subclasses using lambda expressions.
• Worked on developing the user interface for internal users with Spring MVC, Ajax, jQuery, AngularJS and JSON.
• Implemented design patterns like Singleton, MVC, DAO Pattern and Value Objects/Data Transfer Objects (DTO) to transfer data between different tiers of the application to decrease the network traffic when invoking remote objects.
• Involved in writing the web service code to interact with other applications.
• Integration of spring modules with AWS modules in order to consume third party services.
• Deployed the Application in the WebSphere server.
• Designed and developed persistence layer using spring JDBC template.
• Involved in Unit Testing of various modules in generating the Test Cases.
• Used SVN and GitHub as version control tool, Maven for build and management
• Extensively involved in Test-Driven Development (TDD).
• Converted the HTML Pages to JSF Tag Specific Pages.
• Developed JSPs and managed beans using JSF.

Environment: Spring framework, Spring MVC, Spring JDBC, Hibernate, J2EE, JSP, Ajax, XML, Log4j Maven, JavaScript, HTML, CSS, jQuery, SVN, GitHub, WebSphere, Agile, JAX-WS, Apache-CXF, JSF.