Nikhil

Sr. Java Developer

E-Mail: ac4x7u@r.postjobfree.com

Ph: 412 - 533 - 4203

Summary:

Over 5 years of IT experience in Java/J2EE enterprise web application design, development, maintenance & support, involving all SDLC activities like requirements analysis, design, implementation, reviews, unit testing, integration testing, UAT and production deployments.

Good understanding in business processes retail, E-commerce, Insurance, Health care and Banking domains.

Experience in developing applications based on Object Oriented Programming (OOPS) concepts, Java and web-technologies including Core Java, Multithreading / Concurrency, Collections, JDBC & Connection pooling, Spring Core, Spring DI, Spring MVC, Spring web flow, Spring IOC, Spring DAO, Spring Boot, Micro Services, Struts Framework1.2, Hibernate, Ajax, Java, HTML5, CSS, JSP, JSF, Wicket, GWT, JavaScript, JQuery, Angular JS, Bootstrap, J2EE, EJB, JPA, XML, XSD, JSON, JAXB, ANT, Maven, Drools, Log4j, Putty, JUnit,Grunt, Jasmine,Mockito, SOAP and RESTful Web services, SQL, PL/SQL, JDBC, Tomcat, Message Driven bean, JMS, Active MQ, JBoss 4.2 and WebSphere.

Extensive knowledge and experience with Hibernate ORM and JPA implementation.

Experienced with Java Multithreaded programming to develop multithreaded modules and applications.

Experience with Data structures & AlgorithmslikeStack, Queue, Linked List, Linear-search, bubble-sort, and binary-search algorithms etc.

Experience with the various spring modules like Spring Core (IOC), Spring AOP, Spring DAO, Spring Batch, Spring Security, Spring Boot, Spring ORM, Spring JPA Spring Integration, Spring MVC etc.

Experience in spring technologies like MVC, AOP, JDBC, ORM, and Web Services using Eclipse and integration with Hibernate as well as Struts.

Experience in HTML, DHTML, XHTML and JavaScript.

Experience in JVM Performance Tuning: GC and Heap Analysis, Thread dumps, Heap dumps, Memory Leaks, Connection Leaks, Core Dump, Profiling, Refactoring.

Extensive knowledge in front-end technologies like HTML5, CSS3, JSPs, JSTL, JQuery, AngularJS and JavaScript for Client side validations.

Experience with AngularJS as the development framework to build a single-page application.

Experience in working on MVC pattern using AngularJS, creating user interface and single page web application.

Experience writing automated tests using tools like Selenium.

Experience with web services and SOA related standards like RESTful/Oath/JSON/XML and SOAP/WSDL

Hands-on experience in using message brokers such as ActiveMQ and RabbitMQ.

Experience in implementing SOAP &RestfulWeb Services using JAX-WS, JAX-RS

Experience with Java API for XML-Based RPC (JAX-RPC) is an implementation of Remote Procedure Call (RPC) technology in the Java language.

Expertise in web application design using MVC frameworks like Struts and spring.

Extensive knowledge in database transactions management for database related changes by integrating JDBC, Hibernate with spring, also having good knowledge on Apache Camel.

Experience with XML schema documents.

Working experience on SQL, Oracle PL/SQL, Performance tuning and Oracle Stored Procedures.

Experience in database such as DB2, MYSQL, SQL Server and Oracle.

Integration, deployment and automation of application servers Tomcat, WebLogic across Linux platforms.

Good knowledge and experience in writing Junit test cases with EasyMock, Mockito and Power Mock.

Knowledge on Google Cloud Platform, deployment of apps on App Engine.

Experience in developing application using TDD (Test Driven Development) & Unit testing process.

Used Docker hub for creating Docker images and handling multiple images primarily for middleware installations and domain configurations.

Used Spring Boot to create stand-alone spring applications.

Experience with Migration of onpremise to cloud.

Experience in using Jenkins for Continuous Integration and Sonar jobs for java code quality.

Knowledge in Bash Shell Scripting, Automation of cron Jobs.

Experienced in UNIX/Linux shell scripts and Perl for data-driven automatic processing.

Good experience in SCRUM process of Agile (Iterative) development methodology.

Experience with logging mechanisms like log4J & logbackframeworks.

Technical Skills:

Languages : Java, J2EE, C, C++, Python

Query Languages : SQL, PL/SQL, NoSQL.

Web Technologies : JSP, Servlet, CSS, XML, LDAP, XSD, JavaScript, JQuery& AJAX,

GWT

Frameworks : Hibernate (ORM), Spring3.0/4.0, AngularJS, Angular 2, JSF, JSTL,

Spring MVC, Spring Boot, Spring Security.

Scripting : Shell, bash and Perl

Web-Services : XML, JSON, XSLT, XSD, WSDL, JAXB, RESTful, SOAP(JAX-WS).

IDE’s & Tools : Eclipse, IBM RAD, Maven, SVN, and Git, MS Visio.

J2EE Servers : Apache Tomcat, JBOSS, IBM WebSphere, WebLogic,Glassfish.

Utilities : Log4J, Logger, JUnit (Mockito), Ant, Maven.

Design Patterns : MVC, DAO, Singleton pattern & Factory pattern.

Methodologies : UML, Agile/scrum Methodology, Scrum.

Database / RDBMS : Oracle, PostgreSQLMySQL, Informix, DB2, Cassandra.

Cloud : AWS and GoogleCloud

Tools : SOAP UI, AUTOMIC (ARA), TOAD & SQL Developer,Selemium.

Professional Experience:

Trac Intermodal Princeton,NJ Aug 2016– Dec 2017

Sr. Java Developer

Responsibilities:

Involved in analysis, specification, design, and implementation and testing phases of Software Development Life Cycle (SDLC) and used agile methodology (SCRUM) for developing application

Involved in various Java/J2EE technologies including Core Java, J2EE (Servlets, JSP), Spring (IOC, MVC, AOP, DAO), Hibernate/JPA and Java Web Framework along with Web Services (SOAP, RESTful).

Experience in Integration of Amazon Web Services AWS with other applications infrastructure.

Extensively used core java concepts like Collections, Exception Handling, Generics and Java I/O during development of business logic.

Created an internal web framework similar in scope to Angular.js, but closer in design to Knockout.js

Implemented & consumed web services using WSDL/SOAP/XML/XSD/JAXB. Worked on the JAX-WS clients and WSDL generation to integrate the clients to call a web service.

Creating and Designing XML schemas, creating simple and complex types, global element references, attribute, transform the xml to Java objects using transformer objects.

Designed and deployed XML files for Dispatcher Servlets, Application Context and Controllers to implement the Inversion of Control (IOC) module in spring.

Experience in use of Angular2.0UI-Router for defining all application States (routes).

Hands on experience in a Linux environment with Apache Tomcat on Amazon AWS.

Integrated spring with Hibernate framework and created Hibernate mapping files for mapping an object oriented domain model to traditional relational database.

Generated JSON format data packets from middle-tire controller to front-end using Jackson JSON API.

Experienced in the development of web based multi-tier, SOA Java and Groovy applications using Spring MVC, Hibernate, myBatis, Struts, Tiles, JSF, JSP, J2EE, Camel, RabbitMQ, IBM MQ Series (using JMS & Camel), and various data base systems

Experience with JavaScript tools such as Backbone, Angular JS2.0, and React JS

Extensively implemented file processing techniques for processing delimited files.

Implemented Object-relation mapping in the persistence layer using hibernate (ORM) framework. Extensively used DAO patterns, including mapping DAO objects, configure file and classes to interact with database.

Used Hibernate Transaction Management, Hibernate Batch Transactions and Hibernate cache concepts.

Developing Web pages by using HTML5, CSS3with LESS, Angular 2.0 and Angular UI Bootstrap

Selecting the appropriate AWS service based on compute, data, or security requirements.

Experience in installing, configuring and deploying application on Web Logic Server.

JUnit/Mockito Frameworks were used for performing unit & integration testing by writing test cases.

Wrote a Perl program to generate configuration files from Oracle Database.

Written Shell Scripts for retrieving data from Oracle

Used Client side MVC frameworks like Angular 2.0 Single Page Application developments

Experience in Integration of Amazon Web Services AWS with other applications infrastructure.

Worked on Docker container snapshots, attaching to a running container, removing images, managing Directory structures and managing containers.

Built application using MAVEN and used Log4J to generate log files for the application.

Used Splunk to monitor logs.

Used JIRA for defect management and to keep track of bugs and issues.

Code coverage using SonarQube.

Environment: Java 1.7,Spring 4.0, Spring MVC, Spring Batch, Hibernate(ORM), Docker, JSP, JavaScript, XML, XSD, eclipse, Jenkins, Docker, RabbitMQ, Kubernetes JUnit/Mockito, Maven, JSON, SOAPUI 4.5, JIRA, Log4J, Sonar,Splunk, Tortoise SVN, SOAP/WSDL, HQL, SQL

Vistana Orlando, FL Aug 2015 – July 2016

Java Developer

Responsibilities:

Worked in Development of DRW a MySQL based MVC application used for generating nICE (configuration files for SIP and PRI), where SDPMs create customer accounts, design features and feed into actual devices.

Worked on SIMON an interactive design tool for BVE (Business voice edge) orders.

Developed RESTful web services (MicroServices) supporting both XML and JSON (Jackson) via Spring Rest Template.

Developed applications using latest technologies like EJB3.0, Spring2.0, Hibernate3.2 (using annotations), and REST based Webservices (axis2.0, JAX WS 2.0), Rule Engines (Drools4.1, ILOG, BLAZE), XML API and tools.

Extensively used Restful Web services using Spring (MVC) and JDBI.

Implemented Restful web services in Service Oriented Architecture (SOA) to retrieve data from the client side and made REST API calls from AngularJS and parsed data to client.

Used spring (Dependency Injection), developed java beans with getter and setter properties to be configured by spring. Configured and implemented spring application context to instantiate all bean classes.

Worked on Hibernate ORM for mapping the user beans to tables.

Have extensive Knowledge in SIP and PRI protocols used to understand the Business.

Developed the UI Layer using Python 2.7, JavaScript, jQuery, AngularJS, Node.js.

Used NodeJS Application server for session information and permission levels.

Worked on MVC architecture where models are accessed through AJAX calls and managed by AngularJS.

Has very strong exposure on Performance using Load Runner Jakarta JMeter and Performance Center

Developed front-end code with Ajax call in AngularJS and jQuery to retrieve data as JSON Object from controllers in back-end RESTful Server, then display the well-organized result in web pages by writing AngularJS controller, directives, services, and route providers.

Exposure to Elastic Search (NoSQL) used for routing API queries through a proxy endpoint.

Used Elastic Search( NoSQL) by REST API for querying written by database Server

Developed and Maintained production-level cloud based architecture in AWS including creating machine images like AMI.

Worked on AWS, high availability practices and deploying backup/restore infrastructure.

Worked on integration of AWS with other applications and Monitoring applications like AppDynamics.

Checking, analyzing and resolving day to day problems in OSS faced by the performance.

Performed daily routine health check of the OSS, BSS Upload and integrated various network elements in OSS

Creation of performance scripts in Jmeter

Involved in creating, modifying and tuning SQL queries prepared statements and stored procedures used by application using MySQL as database.

Developed and executed unit test cases using jUnit framework by supporting TDD.

Used SiteMinder and LDAP authentication for access and token generation.

Used EJS in conjunction with the authorization NodeJS layer as a dependency.

Used AppDynamics for monitoring the NodeJS server and Ratboard for monitoring application.

Did production support for the application once the application in production. Used monitoring tools like appdynamics to continuously monitor application.

Developed automated unit testing using Junit and Mockito frameworks.

Used Rally Resolve the Service Requests raised and Jenkins for continuous integration.

Used Unix Shell Scripting for generating daily reports in Linux environment.

Worked in agile environment and used Apache Tomcat as application server.

Used Maven for project management and GitHub for version controlling.

Everyday tasks include agile, Rally, Jira, GitHub, stash.

Environment: CORE JAVA, Java 7, Python 2.7, MySQL, XML, JSON, OAuth, Spring SIP & PRI protocols, MVC, Jasper Reports, Log4j, GitHub, Jenkins, SOAP UI, RESTful Web Services (JAX-RS), Shell Script, AWS, Elastic Search, Drools, OSS, JDBI, Jira, Jmeter, Maven, Puppet, Webclient, HTML5, JavaScript, AngularJS, Node.js, Backbone.js.

Flarmp Technologies, Hyderabad, India Apr 2012 - June 2015

Java/J2EE Developer

Responsibilities:

Involved in gathering business requirements, analyzing the project and created UML diagrams such as Use Cases, Class Diagrams, Sequence Diagrams and flowcharts for the Optimization module using Microsoft Visio.

Implemented the AJAX, JSPs, and Servlets, in the MVC Struts Framework to effectively handle the workflow of the application.

Developed Action classes to handle HTTP client requests by using HTTP Servlet Request, HTTP Servlet Response, Action Mapping and Action Form objects.

Worked with Core Spring Framework for Dependency Injection, Spring Context to provide message sources.

Developed Spring Configuration file to define data source, beans and Hibernate properties.

Designed and developed the User Interface using JSP, JSF, HTML5, CSS and JavaScript.

Involved in developing XML, HTML, and JavaScript for client side presentation and, data validation on the client side with in the forms.

Implemented single portal application using Spring MVC, AngularJS, RESTful services and JSON.

Built dynamically generated dropdown lists using Ajax, jQuery UI and AngularJS

Solved problems using a combination of JavaScript, JSON, and JQUERY

Worked with spring web flow to represent UI flow.

Implemented Design Patterns like MVC, Session Facade and Data Transfer Objects.

Used Hibernate XDocket tags to generate hbm.xml files.

Worked with Hibernate for developing Persistence classes to interact with the database.

Implemented a ftp utility program for copying the contents of an entire directory recursively up to two levels from a remote location using Socket Programming.

Implemented Web Services for communicating one application to another application by using SOAP, WSDL and EJB Technology.

Successfully executed the entire test cases and fixed any bugs/issues identified during the test cycles.

Used Eclipse IDE, IBM RAD and Web Sphere application server in development.

Worked with Log4J for logging purpose in the project.

Environment: Java, J2EE,Socket Programming, Servlets, MVC Struts, Spring, SQL, HTML5, CSS, JavaScript, AngularJS, Web Sphere Application Server, Web Services, SOAP, RESTful, UML, MS Visio, Rational Unified Process (RUP), XML, Oracle, VSS, Log4j, Unix/Linux, Maven/Ant, Jenkins.

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