Candidates About

Abhishek Gajapaga

 

Professional Summary

·         8 years of IT Experience in Analysis, Design, Development, Testing, Deployment and Implementation of Multi-Tier distributed applications using JAVA/J2EEArchitectural and Design patterns.

·         8 years of experience in Software Analysis, Design, Development, Implementation and Testing of Object-oriented Applications and WebbasedEnterprise Applications using JAVA/J2EE technologies.

·         Experience in Web Application Development, Client-Server based Enterprise Applications, System Analysis, Technical Design, B2B Implementation, Performance Tuning and Testing.

·         Expert level skills in developing applications using Core Java, J2EE, JSP, Servlets, Spring, Hibernate, Web Services (SOAP and REST), Collections, JDBC, XML, HTML, XHTML, HTML5, CSS, JSON, JavaScript, Ajax, Design Patterns, XSL/XSLT and JQuery.

·         Expertise in writing Micro services using Spring Boot.

·         Good exposure to the full software development lifecycle and Agile/Scrum methodology.

·         Used various Core Java concepts such as Multi-Threading, Exception Handling, Garbage Collection, Collection APIs to implement various features and enhancements.

·         Hands on experience in developing Single Page Applications (SPA) using Angular JS, backbone.js and Node.js.

·         Strong exposure working with J2EE design patterns like MVC, Front Controller, Data Accessor, Value Object, Singleton and Session Facade.

·         Experience in web application design using open source frameworks like Spring MVC, JSF and Struts Framework.

·         Strong hands on exposure to multiple Application Servers like JBoss, Apache Tomcat, WebSphere and BEA WebLogic.

·         Extensive experience in development and implementation of Restful Web Service as a Provider using messaging medium as JSON and have also implemented Soap based web services, WSDL and UDDI using XML over HTTP(s), SOAP, WSDL, Restful protocols.

·         Good experience with version controls like SVN, Clear case, CVS&GIT.

·         Experience in working with Relational Database (RDBMS) concepts, database designing, Normalization, PL/SQL, Stored Procedures, Triggers and extensively worked with SQL Server, Oracle 9i/10g/11g/12c, MONGODB2, MySQL and NOSQL.

·         Exposure to NoSQL databases like Apache Cassandra and Mongo DB.

·         Experienced in generating logging by Log4j to identify the errors in production test environment and experienced in Ant, Maven and Gradle tools building projects.

·         Hands on experience using Messaging Services like JMS, MQ Series, Active MQ.

·         Used Bamboo, Jenkins as a continuous integration and delivery tool that ties automated builds and tests.

·         Worked with JUnit for unit testing, Mockito for mock creation and verification.

·         Used JIRA, Stash, Confluence, Splunk, Git, Source tree to provide tier 1 support for developer and operations staff.

·         Hands on experience in setting up databases in AWS using RDS, storage using S3 bucket and configuring instance backups to S3 bucket to ensure fault tolerance and high availability.

·         Have worked Importing volumes, launching EC2, creating security groups, auto-scaling, load balancers (ELBs) in the defined virtual private connection.

·         Have Knowledge on Amazon Lambda, Code Commit, Code Deploy, Code Pipeline, Code Build.

·         Managed local deployments in Kubernetes, creating local cluster and deploying application containers.

·         Maintenance and monitoring of Docker in a cloud based service during production and setting up system for dynamically adding and removing web services from a server using Docker.

·         Good debugging skills, deep diving into technical issues, collaborating with cross-domain experts, handling clients with different priorities and mind sets, both onsite and remote.

·         Involved in guiding junior developers and review their code functionality before passing to Quality Assurance.

 

Education:

 

Bachelor’s Degree in Engineering.

Master’s Degree in Computer Science.      

 

 

Technical Skills:

Languages	Java, C++, SQL and PL-SQL.
J2EE Technologies	JDK, JDBC 2.0/3.0/4.0, EJB 2.0/3.0, Servlets 2.3/2.4/2.5/.1, JSP 1.2/2.02.3, JSTL, JSF, JMS, JNDI, JAF, JTA, JCA, JAAS, JAXR, JAXP, RMI, Applets (Swing, AWT), JavaBeans, iBATIS 2.2, DMR, Easy Mock, Java Mail API, Java Persistence API.
Databases	Oracle 8i/9i/10g/11g, SQL Server 2000/2005/2008, MySQL 4.x/5.x DB2
Database Tools	Toad 9/10, SQL Developer, PL/SQL Developer, MySQL workbench,  DB2Connect, Oracle 8i/9i/10g/11g,
Web Services	SOAP, RESTful, JAX-WS, JAX-RS, WSDL, JAX-RPC, JAXB, Metro, SAAJ
Web Technologies	XML, XSL, XSLT, SAX, Schema, XPath, DOM, HTML3/5, DHTML, XHTML, CSS3,  WML, JavaScript, JQuery, JSON, AJAX, Node JS, Angular JS, Twitter Bootstrap,  Word Press, GUI, iText, JBOSS SEAM, /Fuse, Adobe Flex, Apache POI, DTD
Platforms	Windows 98/2000/XP/Vista/7/8/10, UNIX, Oracle Solaris, Linux
Web/Application  Server	BEA WebLogic 8.1/9.2/10g/11g/12c, IBM WebSphere 5.x/6.0/7.0/8.x, Apache TomcatAS 4.0/4.2/5.1/6.0/7.0, JBoss EAP 4.2/4.3/5.0/6.0, Glass Fish, Tomcat 4.0/5.x/6.x, Apache HTTP Server, Microsoft IIS.
Framework	Spring 2.0/2.5/3.0/3.1/4.3/5.0, Hibernate 3.0 /3.2/4.0/5.0, Struts 1.x/2.0, ADF,  Castor Framework, Top Link, Maverick, My Faces.
IDEs	Eclipse, JBuilder, RAD, NetBeans, IntelliJ, Web logic Workshop,  IBM Rational Application Developer.
Version Control	CVS, VSS, SVN, Clear Case, Subversion, GitHub.
Methodologies	Agile, Scrum, Test Driven, Waterfall.
Other Libraries	Guava, Jackson.
Defect Tracking  Tools & Others	Jira, Bugzilla, IBM Rational Clear Quest, Trac, putty, WinSCP, Business Objects, Control M Scheduler, Site Minder, Vantage Analyzer, Twilio, HP ALM.

 

 

 

 

 

 

Work Experience:

 

Sr. Java/J2EE Developer

Description: ETS is a registered member service provider with MasterCard International and Visa International.ETS has emerged as a pioneer in PCI-compliant merchant processing solutions in the industry.ETS supports all forms of electronic processing like credit and debit card processing, POS check, electronic funds transfer (EFT), and ATM. Full integration and stand-alone capabilities. Membership billing, private label cards and loyalty solutions.

 

Responsibilities:

·         Implemented Agile (SCRUM) methodology and Test-Driven Development (TTD) for the software development process and to produce high quality application.

·         Analyze the Code and apply the fix solution for the Issues Identified based on the severity basis.

·         Created test plan, test strategy, test cases, scripts based on functional specification, prepared test data for testing.

·         Used Spring MVC to achieve Model View Controller design pattern.

·         Used Eclipse IDE for application Development and used Maven for build automation tool to compile and generate EAR, WAR, and JAR files.

·         Worked on HTML5 code and integrated CSS style sheets to it.

·         Created all the services to work with the various entities provided and rectify the services using REST APIs with JAX-RS.

·         Worked with cross browser issues for multiple browsers and OS.

·         Implemented JQUERY, Angular JS, and AJAX calling for the UI part.

·         Involved in Configuration of Apache Tomcat Server and deployment of application code.

·         Extensively used Hibernate in data access layer to access and update information in the Oracle 11gdatabase.

·         Worked on database connectivity using Oracle SQL Developer and pushing data back and forth from the database.

·          Experience in Importing data from various sources to the Cassandra cluster using Java API's. 

·         Experience in data modeling of Cassandra. 

·         Created documentation for benchmarking the Cassandra cluster for the designed tables. 

·         Used Java Message Service (JMS) for reliable and asynchronous exchange of information. 

·         Used Spring, Spring Integration framework to build applications& interact with multiple interfaces.

·         Troubleshoot the Web Services and Identify the issues based on the logs generated and fix the Issues.

·         Experience with UNIX shell scripting to automate database loads.

·         Used the Linux servers to view the application logs to trouble shoot the application issue.

·         Extensively worked on developing web pages using HTML5, CSS, JQuery and JavaScript.

·         Defects Identified in Production / Local order load environments and raise issues on Jira tracking Portal.

·         Provide technical assistance to resolve operating Issues and demonstrate appropriate solution to the end users.

·         Implemented manual and automated testing methods to perform functional, load, Integration, and regression testing using Selenium.

·         Prepared unit test cases with JUnit, Spring Test and Mockito framework.

·         Used GIT HUB as version control software to manage the source code and to keep track of changes to files which is fast and light weight system.

·         Used Log4j as the logging framework.

·         Design, build and manage the ELK (Elasticsearch, Log stash, Kibana) cluster for centralized logging and search functionalities for the Application.

·         We have tested our application in the Docker container provided by the AWSECS service.

·         Mentor the developers to understand the application and worked with them resolving critical issues.

·         Co-ordinate offshore team to assign & fix the application issues based on the priority.

 

Environment: Java, J2EE, Spring, Agile, Linux, Jdk1.6, JSP, JMS, Web Logic, Oracle, Oracle SQL Developer, JSR, Soap UI, Junit, Mockito, Spring Test, GitHub, Docker, Log4j, Cassandra 2.0/2.1, AEM 6.1, AWS PL/SQL, Windows7.

 

Sr. Java/J2EE Developer

Description: Cross Country Infotech Private Limited responds to the IT and software requirements of its parent company - Cross Country Healthcare, Inc. CCH are one of the largest healthcare staffing companies in the United States. The company has a varied client base and has thousands of contracts with hospitals and healthcare facilities, pharmaceutical and biotechnology customers and other healthcare organizations. The wide range of Web applications, Web portals, and Mobile applications allow HCPs to filter through assignments in real time and find the best opportunity to advance their careers. Services are completely client-focused so that all possible options for HCPs quickest career growth are made available.

 

Responsibilities:

·         Translate business requirements into technical document by Interacting with Business Analysts and Subject Matter Experts (SMEs) to carefully understand business requirements.

·         Involved in the requirement analysis, design and development of the application built in Java/J2EE using JavaScript, JSP, AJAX, JDBC and Web Services with JAX-WS

·         Contributed in design and development of Spring MVC web based application.

·         Designing and Developing Micro-services that are highly scalable, fault-tolerant using Spring Boot.

·         Designed and developed User Interface of application modules using HTML, CSS and JavaScript and AJAX.

·         Excellent understanding of java concepts like multi-threading and concurrency, Collection Framework, String, Exception handling.

·         Involved in writing JSP and JSF components. Used JSTL Tag library (Core, Logic, Nested, and Bean and Html tables) to create standard dynamic web pages.

·         Developed Web Service client interface with JAX-WS from WSDL files for invoking the methods using SOAP, and deployed the application using the Web Logic as application server.

·         Worked on client-server and web based technology using J2EE, XML Technologies and also involved in the Product Development.

·         Worked on Java, J2EE, Servlets, JSP, EJB’s, JDBC, HTML, XML, and other web based development tools. 

·         Unit testing code, reproducing, analysing and fixing defects identified during the Quality Assurance process.

·         Designed and developed Micro services business components using Spring Boot.

·         Used ANT build tool for building and deploying the application onto the production boxes.

·         Managed source repository using SVN for version control tool.

·         Used Jenkins to perform continuous integration and continuous deployment.

·         Provided Log4j support for the application for debugging the system

·         Used Object/Relational mapping Hibernate framework as the persistence layer for interacting with Oracle 10c.

·         Written complex SQL queries, stored procedures, functions and triggers in PL/SQL.

·         Used DB Solo and Squirrel for writing SQL scripts.

·         Effectively prepared for and organized technical inspections to review code and design models with peers and software architects.

·         Provided On-Call Support for various products and maintained them.

·         Good Knowledge and Understanding of Insurance Domain.

Environment: Java, J2EE, EJB, Servlets, JSP, Micro services, Web Services, Web Logic, HTML, CSS, Java Script, Spring boot, Log4j, SVN, PL/SQL, Jenkins, Squirrel, Hibernate, Oracle 10c, SQL, DB2, AJAX, JQuery, Ant.

 

 

Java/JEE Developer

Description: The main goal of this initiative is to improve different processes in the web self-service system. Some of these enhancements are to satisfy federal and state government.

• Reduce shopping path barriers.
• Configure shopping experience to the Core Categories like Signature Collection, Home Fragrance, Anti-bacterial, Classics etc.
• Enhance site functionality that connects the site experience with the brand.
• Improve overall customer satisfaction throughout the buying process. 

 

Responsibilities: 

 

• Interaction with client and designing Technical design document from Business Requirements for the development team.
• Involved in preparing High level and low-level design documents for the task involved in redesigning the BBW webstore.
• Used Agile Methodology and participated in Scrum meetings.
• Used Core Java concepts and other J2EEtechnologies during development phase.
• Used Spring Beans to encapsulate business logic and Implemented Application MVC Architecture using
•  framework.
• Worked on Spring Cache technique, Hibernate configuration and related module service class implementation.
• Used MS SQL Server 2012 as the database and Eclipse as the IDE.
• Used T-SQL to retrieve data using multiple SQL statements.
• Designed and developed front view components using JSP, HTML and CSS.
• Developed User Interface for Application and Purchase System using JavaScript and jQuery.
• Developed Web Services to communicate with other applications using SOAP.
• Developed the WSDL and Web Services in Apache Axis2 for different modules.
• Tested Web Services using SOAP UI toolkit locally.
• Created continuous integration builds using Maven and SVN control.
• Prepared Test Cases to perform Unit, Integration and System Testing. Tested the developed components using JUnit.
• Deployed web components, presentation components and business components in Apache Tomcat and WebLogic Application Server.
• Involved unit Testing, Interface Testing, System Testing and user acceptance testing of the workflow too.

 

Environment: JAVA /J2EE, Agile, Spring, JSP, Servlet, html, CSS, Web services, SOAP, Maven, SVN, Eclipse, JUnit, JQuery, Hibernate, WebLogic application server, Apache Tomcat, Apache Axis2 MS SQL, T-SQL.

 

 

Java Backend Developer

Description: This project is an application for Insurance agents. This is a client/server application consisting of three main modules: 'Query', 'Policy' and 'Rate Quote'. The 'Query' module is the interface with the insurance agent to query the data base and generate customizable reports. The 'Policy'