SUMMARY

• Around 7 years of extensive experience in IT including two years of Big Data Ecosystem related technologies.
• Good understanding/knowledge of installation, configuration, management and deployment of Big Data solutions and the underlying infrastructure of Hadoop Cluster.
• In depth understanding knowledge of Hadoop Architecture and various components such as HDFS, Job Tracker, Task Tracker, Name Node, Data Node and MapReduce concepts
• Hands - on experience on MapReduce Programming/HDFS Frame work including Hive, HBase, HBase-Hive Integration, PIG and knowledge of Sqoop.
• Set up standards and processes for Hadoop based application design and implementation.
• Experience in analyzing data using HIVEQL, PIG Latin and custom MapReduce programs in JAVA. Extending HIVE and PIG core functionality by using custom UDF’s.
• Experience in Designing, developing and implementing connectivity products that allow efficient exchange of data between our core database engine and Hadoop ecosystem.
• Knowledge of HBase.
• Experience in importing and exporting the data using Sqoop from HDFS to Relational Database systems/mainframe and vice-versa.
• Responsible for building scalable distributed data solutions using Hadoop.
• Hands on experience in application development using Java, RDBMS, and Linux shell scripting.
• Diverse experience utilizing Java tools in business, Web, and client-server environments including Java Platform, J2EE, EJB, JSP, Java Servlets, Struts, and Java database Connectivity (JDBC) technologies.
• Solid background in Object-Oriented analysis (OOAD) and design. Very good at various Design Patterns, UML and Enterprise Application Integration EAI.

TECHNICAL SKILLS

Big data/Hadoop: HDFS, Map Reduce, HIVE, PIG, HBase, Sqoop.

Java Technologies: Core Java, I8N, JFC, Swing, Beans, Log4j, Reflection.

J2EE Technologies: Servlets, JSP, JDBC

Methodologies: Agile, UML, Design Patterns (Core Java and J2EE).

Web Design Tools: HTML, DHTML, AJAX, JavaScript.

Frameworks: Struts 1.1/2.0, Spring 2.5, Hibernate 3.0.

Database: Oracle 11g/10g/9i, MySQL, DB2, MS-SQL Server.

Programming Languages: C,C++, Java, Linux shell scripts.

Web Servers: WebLogic, WebSphere, Apache Tomcat.

Network Protocols: TCP/IP, UDP, HTTP, DNS, DHCP.

PROFESSIONAL EXPERIENCE

Confidential - Austin, TX

Hadoop Developer

Responsibilities:

• Responsible for building scalable distributed data solutions using Hadoop.
• Wrote the shell scripts to monitor the health check of Hadoop daemon services and respond accordingly to any warning or failure conditions.
• Managing and scheduling Jobs on a Hadoop cluster.
• Deployed Hadoop Cluster in the following modes.
• Developed Pig Latin scripts to extract the data from the web server output files to load into HDFS.
• Wrote MapReduce jobs using Java API.
• Developed Scripts and Batch Job to schedule various Hadoop Program.
• Installed and maintained Apache Hadoop clusters for application development and Hadoop tools like Hive, Pig, HBase and Sqoop.
• Installed and configured Pig and also written PigLatin scripts.
• Developed the Pig UDF’S to pre-process the data for analysis.
• Develop Hive queries for the analysts.
• Wrote Hive queries for data analysis to meet the business requirements.
• Developed workflow in Oozie to automate the tasks of loading the data into HDFS and pre-processing with Pig.
• Implemented Fair schedulers on the Job tracker to share the resources of the Cluster for the Map Reduce jobs given by the users.
• Took part in monitoring, troubleshooting and managing Hadoop log files.

Environment: Apache Hadoop, Java (jdk1.6), DataStax, Flat files, Oracle 11g/10g, MySQL, Toad 9.6, Windows NT, UNIX, Sqoop, Hive, Oozie.

Confidential, Moline, IL

Sr. Java Developer

Responsibilities:

• Involved in the enhancements, re-designing the existing application. Actively participated in interacting and gathering the requirements from the client for the new enhancements.
• Developed the application using Struts Framework that leverages the classical Model-View-Controller (MVC) architecture.
• Actively involved in implementing Data Access Object, Session Facade and Data Transfer Object design patterns.
• Developed and implemented an Asynchronous, AJAX based rich client for improved customer experience.
• Developed few session Beans for the business logic at the middle tier level.
• Experience in using Hibernate as an ORM tool to maintain object relational persistence across front-end and Oracle Database, writing HQL queries and creating hibernate mapping (.hbm) files.
• Implemented DAO classes using Hibernate framework for the data connectivity and extraction of the data according to the business logic with Oracle database.
• Designed and developed re-usable web services and Java Utility classes to support XML, DOM, XML Schemas, XSL.
• Designed and developed modules using SAX for XML parsing and XML transformations using XSLT.
• Deployed, monitored and troubleshoot applications in JBOSS Dev environment.
• Developed JUnit test cases for all developed modules and performed Unit and Integration Testing.
• Used Log4J for message logging.

Environment: Java 1.4, JSP, JSF2.0, Struts 2.0, JBoss, Hibernate 2.0, Oracle 9i, JavaScript, AJAX, CSS, Web-services, XML, XSL/XSLT, Windows NT, JUnit, Log4J, UNIX, Rational Rose and Clear Case, clear Quest.

Confidential, Nashville, TN

Java Developer

Responsibilities:

• Responsible for the development & unit testing of Staffing Request module using Struts.
• Prepared architectural prototype to validate the architecture and baseline for the development.
• Involved in system design and development in Core Java using Collections, multithreading.
• Developed JUnit test cases and validated users input using regular expressions in JavaScript as well as in the server side.
• Used Hibernate Query Language for to store and retrieve data from the database.
• Configured the Queues and topics on the JMS of the JBOSS server.
• Used Struts tag libraries and custom tag libraries extensively while coding JSP pages.
• Interact with clients to understand their needs and propose design to the team to implement the requirement.
• Train team members to understand the system and how to use it.
• Developed PL/SQL objects like packages, procedures and functions.
• Always adhered on Quality processes during delivery on tasks to client.
• Provided Test Scripts and Templates with test results of each task delivered to the client team.
• Always used the best practices of Java/J2EE and minimize the unnecessary object creation, encourage proper garbage collections of un-used objects, always keep try to minimize the database call, always encourage to get all data in bulk from database to get best performance of application.

Environment: J2EE (JSP’s, Servlets, EJB), HTML, Struts, DB2, hibernate 3.0, Log4j, JUnit 3.8.1.,Eclipse 3.1.1, JBoss Plugins, JMS in JBoss, CVS, CSS and JS, SQL Server .

Confidential

Java Developer

Responsibilities:

• Coded end to end (i.e. from GUI on Client side to Middleware to database and Connecting the back end Systems) on a subset of sub modules belonging to the above modules.
• Worked extensively on Swing.
• Most of the business logic is provided in Session Beans and the database transactions are performed using Container Managed Entity Beans.
• Worked on Parsing of XML Using DOM and SAX.
• Implemented EJB Transactions.
• Used JMS for messaging with IBM MQ-Series.
• Written stored procedures.
• Developed the Presentation layer, which was built using Servlets and JSP and MVC architecture on Web sphere Studio Application Developer (WSAD).
• Mentoring other programmers.
• Studied the implementation of Struts
• Implemented the Security Access Control both on client and Server side. Applet signing including Jar signing.

Environment: Java, Java Swing JSP, Servlets, JDBC, Applets, Struts, JCE 1.2, RMI, EJB, XML/XSL, Visual Age java (VAJ).

Confidential

Java developer

Responsibilities:

• Involved in the analysis, design, implementation, and testing of the project.
• Implemented the presentation layer with HTML, XHTML and JavaScript.
• Developed web components using JSP, Servlets and JDBC.
• Implemented database using SQL Server.
• Designed tables and indexes.
• Wrote complex SQL and stored procedures.
• Involved in fixing bugs and unit testing with test cases using JUnit.
• Developed user and technical documentation.

Environment: JAVA, Java Script, HTML, XML, JDBC Drivers, Unix, Shell scripting, SQL Server.