PROFESSIONAL SUMMARY:

• Over 6+ years of extensive IT experience as Java/J2EE developer in all phases of Software Development Life Cycle (SDLC) which includes development, design, analysis, testing and Integration of various web based and client/server applications in multi - platform environments with JAVA/J2EE technologies.
• Experience in developing applications using SDLC methodologies like Waterfall, RUP, Agile (TDD, SCRUM) and Test-Driven Development.
• Proficiency in multiple databases like MongoDB, Cassandra, MySQL, ORACLE and MS SQL Server.
• Developed Service Oriented Architecture (SOA) and Micro Service Architecture based J2EE applications.
• Utilized Java 1.8 features like Lambda expressions and Stream API for Bulk data operations on Collections which would increase the performance of the Application.
• Experience in developing and deploying applications on Cloud Platforms like Amazon Web Services.
• Managed Amazon Web Services like EC2, S3 bucket, ELB, Auto-Scaling, SNS, SQS, AMI, IAM, Dynamo DB, Elastic search, Virtual Private Cloud (VPC) through AWS Console and API Integration.
• Excellent in deploying the applications in AWS as EC2 instances and created snapshots for the data that had to be stored in AWS S3.
• Excellent knowledge on CQL (Cassandra Query Language), for retrieving the data present in Cassandra cluster by running queries in CQL.
• Excellent Knowledge of Cassandra Architecture, Cassandra data modelling & Monitoring Cassandra using Opscenter.
• Developed enhancements to MongoDB architecture to improve performance and scalability.
• Familiar with MongoDB clusters, Java scripting to load unstructured data into sharding environment.
• Very good implementation experience of Object Oriented concepts, Multithreading and Java/Scala
• Defined AWS Security Groups which acted as virtual firewalls that controlled the traffic allowed reaching one or more EC2 instances.
• Experience in applying best practice Design Patterns and Strategies to enterprise applications to reduce tight coupling, maximize performance and reduce maintenance/extensibility risks.
• Expert in Core Java and implementing concepts like Multithreading, Concurrency, Exception Handling, File handling, IO, Generics and Java collections in various projects.
• Used Core Java 6, Java 8, J2EE, JSP, JDBC, RDBMS, Java Script, JQuery, Ajax, XML and Oracle 11g, PostgreSQL as database J2EE platforms on Windows, UNIX.
• Expertise in implementing design patterns like Singleton, Factory, Prototype, Business Delegate, Session Facade, Service locator, Visitor, Observer, Decorator, Front Controller and DAO pattern.
• Expertise in developing web pages using HTML5, CSS3, Bootstrap, JavaScript, jQuery, Ajax and Angular JS with webpage cross browser compatibility and responsive web design and have knowledge on Server scripting language like Node JS.
• Experienced in developing web-based applications using Java/J2EE, Servlets, Struts (Struts, Tag Libraries and Struts custom validation rules, Tiles), Spring IOC, Spring MVC, Spring AOP, Spring Security, Spring Boot, Spring Web Flow, Spring Data, JDBC, Web Services (SOAP & Restful services) and ORM frameworks like Hibernate, iBatis.
• Excellent in developing REST and SOAP based Web Services using JAX-RS, JAX-WS, WSDL, JAX-B, Apache Axis, Apache CXF and Jersey frameworks.
• Experienced in implementation of JMS to exchange information over reliable channel in an asynchronous way by using Active MQ, Rabbit MQ, and Kafka as message queue.
• Experience using Hibernate for mapping Java classes with database and using Criteria API and Hibernate Query Language (HQL).
• Proficient in developing RESTFUL web services in Python using XML, JSON.
• Good Knowledge of Data Access Object (DAO) pattern to introduce an abstraction layer between the Business logic tier (Business object) and the Persistent storage tier (data source).
• Worked with SQL databases like Oracle, My SQL, IBM DB2 and Hands on Experience in working with NoSQL Database like MongoDB, Cassandra to manage extremely large data sets.
• Proficient in writing SQL queries, PL/SQL stored procedures, Triggers and creating business tables.
• Hands on experience in working with JUnit, Mockito, Selenium, Groovy Spock and TestNG.
• Experienced with deploying applications on to production servers, configuring various parameters of servers like Apache Tomcat, JBOSS, BEA Web logic, IBM Web Sphere.
• Skilled in using collections in Python for manipulating and looping through different user defined objects.
• Good Knowledge in using Dojo Components and integrating back-end applications with AJAX driven web 2.0 front-end using OO JavaScript framework.
• Extensive experience in Core Java 8, Spring Boot, Spring, Hibernate, Web Services, Kubernetes, Swagger, Docker
• Creation of custom components, client libraries, OSGI services, deployments frameworks, querying and connecting to DB using OSGI bundles.
• Portable deployment of applications as a single object using Docker.
• Actively involved in the DevOps streamlining process through Jenkins CI and CD Release Automation.
• Used version controller tools like Tortoise Subversion (SVN), CVS and Git.
• Experience with and solid understanding of Micro Services.
• Created and consumed Micro Services based on Web API.
• Implemented a Continuous Delivery pipeline with Docker, Jenkins and GitHub and AWS AMI’s.
• Experience in working with IDE’S like Eclipse, Spring Tool Suite (STS), RAD and Intellij.
• Have extensive experience working on Windows, Linux and UNIX Operating Systems.
• Ability to work effectively in cross-functional team environments and experience of providing to business users.
• Good understanding of Business workflow, Business logic and Business methods for further implementation of user requirement in a distributed application environment.

TECHNICAL SKILLS:

Languages: C, C++, Java 1.8, J2EE, Python, SQL and PL/SQL

Mark-up/XML Technologies: HTML5, CSS3, Bootstrap, JavaScript, jQuery, AJAX, Angular JS 1.4, Node JS, XML, XSD, XSL/XSLT, SAX/DOM, DOJO and JSON.

Tools: & Framework: Struts, Spring, Hibernate, Spring MVC, Spring Web Flow, Spring IOC, Spring AOP, Spring Security, Spring Boot, JSF, JUnit, Apache CXF, SOAP UI, GWT, Jersey.

Build Automation: ANT, MAVEN, Jenkins, Gradle.

Web services: SOAP, RESTful, UDDI, WSDL, JAX-RPC, JAX-RS, JAX-WS, JAX-B, Micro services, Apache Axis and Apache CFX.

Cloud Technologies: Amazon Web Services (EC2, SQS, RDS, IAM, S3), Pivotal Cloud Foundry and Spring Cloud.

Web/App Servers: Web Sphere, Apache, Apache Tomcat, JBOSS EAP, Web Logic Server and Apache Camel

Databases: Oracle, SQL-Server 2005, MySQL server, MS SQL, IBM DB2, NoSQL DB like MongoDB and Cassandra.

IDE tools: Eclipse, Net Beans, Spring Tool Suite (STS) and IntelliJ IDEA, RAD, Adobe Dreamweaver.

Modeling/ CASE Tools: Rational Rose and MS Visio Professional.

Testing Tools/ Others: Selenium, TestNG, JUnit, TOAD, Soap UI, Putty, Rational Clear Quest, RTC, Load UI and Mockito.

Version Control: Tortoise SVN, CVS, Rational Clear case, Source Tree and GIT.

OS & Environment: Windows Vista/XP/2000/NT, Win 2k Server, Sun Solaris, UNIX

Design Patterns: Singleton, Factory, Prototype, Business Delegate, Session Facade, Service locator, Visitor, Observer, Decorator, Front Controller and DAO pattern.

PROFESSIONAL EXPERIENCE:

Confidential, Dover, NH

Java/J2EE Developer

Responsibilities:

• Created web services using WTP tool plugin to the Java IDE which is deployed as a separate application using Maven scripts.
• Responsible for development based on spring boot application for payment processing in the Micro Services Framework.
• Implemented RESTFUL web services API using HTTP and REST principles • Used bootstrap and angular.js in effective web design.
• Design, configure, create and support micro services in Spring to consume 4G and 5G router REST API's
• Used Angular-JS HTTP to retrieve data through Web API from entity frame work • Designed the workflow, system architecture, drawing sequence diagrams, activity diagrams, class diagrams, HTML pages, database schema and tables.
• Developer Restful API in JAVA on Micro-service Architecture using Spring Boot /Cloud
• Used Spring Core Annotations for Dependency Injection Spring DI and Spring MVC for REST API s and Spring Boot for micro-services.
• Developed Mean Stack from scratch including Mongo DB server (Mongoose Connector) setup and Express JS server development.
• Configured micro-service configuration on PSG
• Developed different modules using Java, Apache Camel, spring and Hibernate.
• Developed core Java programs for all business rules and workflows using spring framework.
• Designed and developed Restful service interface using Spring MVC to the underlying customer event API. Involved in building Restful Web services using JAX-RSAPI.
• Building RESTful services using Micro-services architecture with tools such as Spring-boot.
• Designed dynamic and browser compatible pages using HTML5, CSS3, JavaScript and AngularJS.
• Designed and created Single Page Application using AngularJS MVC framework using the TDD (Test Driven Development) methodology.
• Developed Http clients using Rest easy API to communicate between micro services.
• Hands on experience in creating AngularJS modules, directives and controllers to implement the project logic.
• Responsible for creating and maintaining architecture for Restful API using Spring Boot.
• Involved in creating Restful web services using JAX-RS and JERSY tool.
• Design, implement, test Restful Web application using Core Java, Spring, Spring security, Spring Boot, and SQL Server database
• Development RESTful APIs projects from scratch on RESTEasy framework
• Managed local team for creating and consuming RESTful API services for functionality like search, mail notification, file upload and download, etc.
• Designed and Implemented new applications and modules from scratch in Java/J2EE to create sophisticated backend applications

Confidential, Atlanta, Georgia

Java/J2EE Developer

Responsibilities:

• Involved in all phases of the Software development life cycle (SDLC) using Agile Methodology.
• Developed User Interface using JSP, JSTL, HTML, CSS, Java Script, jQuery and Angular JS.
• Used various jQuery UI controls and corresponding Event handlers.
• Used Spring MVC and Dependency Injection for handling presentation and business logic.
• To maintain loose coupling between layers published the business layer as services and injected necessary dependent components using Spring IOC and published cross cutting concerns like Logging, User Interface exceptions, Transactions using Spring AOP.
• Created Java API to transfer the XML data from user input to database.
• Integrated Spring DAO for data access using Hibernate.
• Used Spring Security for Authentication and Authorization of the application.
• Extensively used JSON to parse the data from server side to satisfy the business requirement.
• Implemented persistence framework using Hibernate & Handled Transaction Management using the provided data source.
• Used Kubernetes Linux container for deploying and scaling containerized applications.
• Configured Kafka using Java API's. Agile/Scrum sprints updating and tracking through Jira.
• Responsible for designing Hibernate mapping files based on business logic and Object relationships.
• Integrated spring and hibernate together and worked on developing backend components and services using Hibernate and spring.
• Responsible for administration, maintenance, Performance analysis, and Capacity planning for MongoDB 2.x, 3.0.x and 3.2 versions.
• Worked with Docker and Kubernetes Micro services.
• Set and tune System Parameters for MongoDB.
• Install and run MongoDB with multiple instances on servers.
• Secure MongoDB using authentication.
• Configuring, implementing and supporting High Availability (Replication) with Load balancing (sharding) cluster of MongoDB having TB's of data.
• Backup and restore mongo databases using LVM snapshots and Ops manager backups.
• Optimizing MongoDB CRUD Operations.
• Disaster Recovery setup and best practices, including planning, testing, failover testing.
• Established Database Connectivity using JDBC, Hibernate O/R mapping with Spring ORM for DB2.
• Worked on Hibernate in Data Access Layer for mapping the java objects to relational database and SQL queries to fetch the data, insert and update the data from the database.
• Consumed Web Services to interact with other external interfaces to exchange the data in different forms by using Restful service.
• Created various Parser programs to extract data from Autosys, Tibco Business Objects, XML, Informatica, Java, and database views using Scala
• Using AWS, Docker and Kubernetes for deployments.
• Designed and developed the agent portal using framework AngularJS 2.0 along with HTML5, CSS3, and TypeScript.
• Implemented SOA architecture with Web Services using SOAP, WSDL and XML using Apache CXF framework and worked on parsing the XML files using DOM/SAX parsers.
• Extensively used Core Java such as Exceptions, Multithreading, Data Structures and Collections in this project along with Encapsulation, Abstraction, Java 8 new features like Lambdas, Method s.
• Created tables, triggers, PL/SQL Stored Procedures, SQL queries, Joins, and views for IBM DB2.
• Implemented Restful and SOAP based Web Services and used Soap UI for testing.
• Used Spring JMS module for lookup for the queues and MDBs for the listeners.
• Involved in Unit Testing of various modules by generating the Test Cases.
• Performed deployment of applications on JBOSS.
• Written LINUX shell scripts to identify user login information.
• Involved in day to day handling of JIRA issues (production issues at time) that involved data inconsistencies that required to be solved in very less time.
• Involved in designing various stages of migrating data from RDBMS to Cassandra.
• Developed micro services using Spring Boot and Pivotal cloud foundry, Java 8, Spring Security OAuth2 • Responsible for API Platform design on High Available & Scalable Micro Services Architecture.
• Involved in Bug fixing of various modules that were raised by the testing teams in the application during the Integration testing phase.
• Created & developed J2EE applications and Web Services with Java Servlets, Java Server Pages (JSP), JavaScript and Java API's. Client-Server development with REST and SOAP messages
• Participated in Code Reviews of other modules, documents, test cases.

Environment: Java, J2EE, HTML, CSS, JavaScript, jQuery, Angular JS, JSP, JSTL, JSF, Spring, Java8, Hibernate, AngularJS 2.0, XML, XSD, SOAP UI, Web Services, Restful, SOAP, WSDL, Kubernetes, Log4j, JUnit, DB2, JBOSS, Jenkins, SVN, Eclipse IDE, JIRA, Agile Methodology, Linux, Rational Rose and UML

Confidential, Denver, CO

Java Full Stack Developer

Responsibilities:

• Performed Requirement Gathering & Analysis by actively soliciting, analyzing and negotiating customer requirements and prepared the requirements specification document for the application using Microsoft Word.
• Involved in development of the applications using Spring Web MVC and other components of the Spring Framework, the controller being Spring Core (Dispatcher Servlet).
• Developed the UI using HTML, CSS, JSP and JavaScript for interactive cross browser functionality and complex user interface.
• Implemented service layer on top of Cassandra using core Java, Datastax Java API and Restful API.
• Developed Use Case diagrams, business flow diagrams, Activity/State diagrams.
• Adopted J2EE design patterns like Adapter, Factory and Singleton.
• Configuration of application using spring, Hibernate, DAO's, Actions Classes, Java Server Pages.
• Used the Inversion of Control module of spring framework.
• Configuring Hibernate and Tiles related XML files.
• Developed the application using Spring Framework that uses Model View Controller (MVC) architecture with JSP as the view.
• Integrating CI/CD tools for easy deployment such as Git, Jenkins, Docker, and Kubernetes
• Installing, configuring, monitoring Apache Cassandra Prod, Dev and Test clusters
• Implementing and maintaining a multi Datacenter Cluster.
• Involved in the process of adding a new Datacenter to existing Cassandra Cluster
• Involved in upgrading the Cassandra test clusters
• Add / remove replica and shard nodes in MongoDB Cluster as needed.
• Design & implement sharding and indexing strategies for huge data sets.
• Migrate mongoDB, sharded/replica cluster form one datacenter to another without downtime.
• Manage and Monitor large production MongoDB sharded cluster environments having terabytes of the data.
• Setting up MongoDB Profiling to get slow queries.
• Implemented all Apache Camel Integration framework modules i.e., Java DSL, Spring DSL, Scala DSL and Groovy DSL for service aggregation.
• Utilized JavaScript Frameworks AngularJS 2.0, NodeJS
• Jersey implementation of JAX-RS is utilized to develop RESTful service.
• Developed a RESTful service to provide all the CRUD capabilities.
• Developed presentation layer using JSP, HTML and CSS, JQuery.
• Extensively used Spring IOC for Dependency Injection.
• Developed Servlets and Java Server Pages (JSP), to route the submittals to the EJB components and render-retrieved information using Session Facade, Service Locator (design pattern).
• Developed J2EE components on Eclipse IDE.
• Used JDBC to invoke Stored Procedures and also used JDBC for database connectivity to SQL.
• Used Oracle11g database for tables creation and involved in writing SQL queries using Joins and Stored Procedures.
• Implemented modules using Core Java APIs, Java collection, Java 8(Streams), multi-threading and object-oriented designs.
• Set up Jenkins server and build jobs to provide continuous automated builds based on polling the Git source control system during the day and periodic scheduled builds overnight to support development needs using Git, and Maven.
• Providing service discovery for all Micro services using Spring Cloud Kubernetes project
• Deployed the application on to JBoss application server.
• Communicated with QA team members and Participated in regular QA Team meetings and discussions.
• Used JMS to publish message on to the Queue after the process.
• Wrote conversion scripts using SQL, stored procedures, functions and packages to migrate data from SQL server database to Oracle database.

Environment: - Java, JSP, Spring MVC, Hibernate, JAX-RS, JavaScript, Kubernetes, Oracle11g, JMS.

Confidential

Java Developer

Responsibilities:

• Developed the application based on MVC architecture.
• Captured all the functional and technical requirements of the Supply Chain Management System.
• Was involved in the preparation of the software requirements and design document (SRS).
• Adapted Java Design Patterns DAO, Value Objects and Session Facade to develop business components.
• Defined the detailed application and database design.
• Developed GUI using HTML, CSS and JSP, Java Servlets were used as the common gateway interface between the client and server.
• Java Beans were used to handle business logic as a Model and Servlets to control the flow of application as
• Controller.
• Developed Java API to interact with the Amazon SQS for sending bulk emails.
• Involved in collecting requirements from Business Users and Data Modeling, designing and developing Tools using J2EE, Java, Servlets, EJB, and JSP.
• Front end validations are written using JavaScript.
• Performed coding of Action classes, Business Layer and DAO, JDO and wired them using Spring Framework.
• Used Spring IOC for injecting dependencies into a bean and used annotations for injecting one dependency into another dependency.
• Used Spring ORM/Data module to integrate with Hibernate and developed persistence API to store relational data in to MySQL Database.
• Used Jenkins and pipelines to drive all micro services builds out to the Docker registry and then deployed to Kubernetes, Created Pods and managed using Kubernetes.
• Involved in writing Java API for Amazon Lambda to manage some of the AWS Services.
• Developed RESTFUL web services using JAX-RS implementation.
• Used spring framework, JAVA EE to develop REST Web Services which are deployable on Tomcat and WebSphere web containers.
• Extensively used Core Java API, Spring API in developing the business logic.
• Developed Restful web services for the Downstream Systems.
• Developed unit testing framework using JUnit test cases for continuous integration testing and used JTest Tool for performance testing.
• Worked with ANT to compile the code, packaging the binaries and deploying the binaries to the test server application.
• Provided a User Manual and User on the new system to ease them into the new system.

Environment: JDK, J2EE, HTML, CSS, JDBC, JavaScript, JSP, JavaScript, ANT, CSS, JUnit, JTest, Kubernetes, Spring, Hibernate, CVS, WebSphere, RESTful, MYSQL, Linux.