SUMMARY

• Over 8+ years of professional IT experience which includes experience in Big data ecosystem and Java/J2EE related technologies.
• Almost 3 years of experience in Hadoop architecture and various components such as HDFS, Job Tracker, Task Tracker, NameNode, Data Node, YARN, Pig, hive, Imapala and MapReduce programming paradigm.
• Hands on experience in installing, configuring, and using Hadoop ecosystem components like Hadoop MapReduce, HDFS, HBase, Hive, Sqoop, Pig, Impala,Shark and Flume.
• Experience in working with ETL tools like Abinito, Talend.
• Experience in managing and reviewing Hadoop log files.
• Excellent understanding and knowledge of NOSQL databases like MongoDB, HBase, Cassandra.
• Experience in Hadoop administration activities such as installation and configuration of clusters using Apache, Cloudera and AWS.
• Implemented in setting up standards and processes for Hadoop based application design and implementation.
• Experience in importing and exporting data using Sqoop and writing custom shell scripts from HDFS to Relational Database Systems and vice - versa.
• Experience in Object Oriented Analysis, Design (OOAD) and development of software using UML Methodology, good knowledge of J2EE design patterns and Core Java design patterns.
• Very good experience in complete project life cycle (design, development, testing and implementation) of Client Server and Web applications.
• Extensive experience working in Oracle, DB2, SQL Server and My SQL database.
• Hands on experience in VPN, Putty, winSCP, VNCviewer, etc.
• Scripting to deploy monitors, checks and critical system admin functions automation.
• Good experience in ETL, Documentation, supporting, Testing, Data Mapping, Transformation and Loading between Source and Target Databases in a complex, high-volume environment to populate all development and testing schemas.
• Hands on experience in application development using Java, RDBMS, and Linux shell scripting.
• Experience in Java, JSP, Servlets, EJB, WebLogic, WebSphere, Hibernate, Spring, JBoss, JDBC, RMI, Java Script, Ajax, Jquery, XML, and HTML.
• Extensive experience in version control and source code management tools like GitHub, Rational Clearcase.
• Ability to adapt to evolving technology, strong sense of responsibility and accomplishment.
• Major strengths are familiarity with multiple software systems, ability to learn quickly new technologies, adapt to new environments, self-motivated, team player, focused adaptive and quick learner with excellent interpersonal, technical and communication skills.

TECHNICAL SKILLS

Big Data Ecosystem: HDFS, HBase, Hadoop MapReduce, Zookeeper, Hive, Pig, Sqoop, Flume, Oozie, Cassandra, Talend, Impala, Shark

RDBMS/ Database: SQL Server 2000/2005/2008 R2, MS-Access XP/2007, Sybase. ORACLE 10g/9i, PL/SQL, Hbase, Cassandra, Teradata

Data Analysis: Tableau, R

ETL: Talend, Abinito

Languages: Java, PHP, T-SQL, PL/SQL C#. NET, XML

IDE: Visual Studio, Eclipse

Web Design Tools: HTML, CSS, JSP, MVC, Ajax, Struts

Scripting Languages: Shell scripting, Python, Perl Scripting, Java Scripting

Operating Systems: MS-DOS, Windows, MAC, UNIX, LINUX

Data Modeling: Microsoft Vision 2000, Erwin 4.0/3.5

PROFESSIONAL EXPERIENCE

Confidential - Plano, TX

Hadoop Developer

Responsibilities:

• Did analysis for identifying the potential tables form source (Teradata, Oracle) for migrating them to Hadoop.
• Prepared custom shell scripts for connecting to Teradata and pulling the data from Teradata tables to HDFS.
• Used Sqoop for moving the data from the Oracle source tables to HDFS.
• Responsible for moving the data from source (Teradata, Oracle) to HDFS and Unit testing of the files moved.
• Involved in testing activities within QA environment which include doing smoke testing, System testing, Integration testing and writing test cases.
• Studied the Abintio transformations of the source tables to replicate them using Talend (Hadoop ETL).
• Implementation of Talend jobs to extract the data from different systems.
• Created hive tables for the moved files in HDFS.
• Developed python scripts for some use cases.
• Used Pig for transformations on the tables.
• Did comparative analysis of the Hive vs Impala.
• Managing and scheduling jobs on hadoop cluster using Oozie.
• Responsible for code promotion using Github.
• Used Solr for searching data in HDFS.
• Used R for analysis of the data.
• Responsible for preparing the File level and Column level metadata.
• Prepared the source target mapping of the files.
• Extensively used the Hue browser for interacting with hadoop components.
• Used cdh5.1 hadoop cluster with 24 nodes in development environment.
• Worked in Agile environment with team of 7 people.

Environment: Hadoop, HDFS, Hive, Impala, Spark, Talend, Teradata, Oracle, Flume, R, HBase, Sqoop, PIG, Java (JDK 1.6), Eclipse, Ubuntu, Zookeeper, Abintio, Github, Maven

Confidential - Atlanta, GA

Hadoop Developer

Responsibilities:

• Worked on analyzing Hadoop cluster and different big data analytic tools including Pig, Hive and Impala.
• Responsible for building scalable distributed data solutions using Hadoop.
• Installed and configured Flume, Hive, Pig, Sqoop, HBase on the Hadoop cluster.
• Managing and scheduling Jobs on a Hadoop cluster.
• Worked on installing cluster, commissioning & decommissioning of datanode, namenode recovery, capacity planning, and slots configuration.
• Resource management of HADOOP Cluster including adding/removing cluster nodes for maintenance and capacity needs.
• Automating the jobs using Oozie.
• Involved in loading data from UNIX file system to HDFS.
• Migration of ETL processes from Oracle to Hive to test the easy data manipulation.
• Developed Hive queries to process the data for visualizing.
• Created HBase tables to store variable data formats of PII data coming from different portfolios.
• Implemented best income logic using Pig scripts.
• Implemented test scripts to support test driven development and continuous integration.
• Responsible to manage data coming from different sources.
• Installed and configured Hive and also written Hive UDFs.
• Experienced on loading and transforming of large sets of structured, semi structured and unstructured data.
• Cluster coordination services through Zookeeper.
• Experience in managing and reviewing Hadoop log files.
• Exported the analysed data to the relational databases using Sqoop for visualization and to generate reports for the BI team.
• Analysed large amounts of data sets to determine optimal way to aggregate and report on it.
• Supported in setting up QA environment and updating configurations for implementing scripts with Pig and Sqoop.

Environment: Hadoop, HDFS, Hive, Flume, HBase, Sqoop, PIG, Java (JDK 1.6), Eclipse, Oracle, Impala, Zookeeper, Horton works

Confidential - Detroit MI

Hadoop Developer

Responsibilities:

• Installed and configured HadoopMapreduce, HDFS, Developed multiple MapReduce jobs in java for data cleaning and preprocessing.
• Installed and configured Pig and also written PigLatin scripts.
• Involved in managing and reviewing Hadoop log files.
• Imported data using Sqoop to load data from SQL server to HDFS on regular basis.
• Developing Scripts and Batch Job to schedule various Hadoop Program.
• Creating Hive tables and working on them using Hive QL.
• Written Hive queries for data analysis to meet the business requirements.
• Experienced in defining job flows.
• Setup and benchmarked Hadoop/HBase clusters for internal use.

Environment: Hadoop, MapReduce, HDFS, Hive, Java, Hadoop distribution of Horton Works, Cloudera, Pig, HBase, Linux, XML, SQL server, MySQL Workbench, Java 6, Eclipse, Oracle 10g, MangoDB.

Confidential - NJ

Java Developer

Responsibilities:

• Participated in the creation of Use Cases, Class Diagrams, and Sequence Diagrams for analysis and design of application.
• Developing Intranet Web Application using J2EE architecture, using JSP to design the user interfaces.
• Used JSP, HTML, Java Script and CSS for content layout and presentation.
• Developed the application based on MVC architecture using Struts Framework, designed Action Classes, Form Beans.
• Created web application prototype using jQuery.
• Used Spring to implement the Business layer and Data Access layer.
• Used JQuery to make the frontend components interact with the JavaScript functions to add dynamism to the web pages at the client side.
• Involved in configuring hibernate to access database and retrieve data from the database.
• Developed several web pages using JSP, HTML, and XML.
• Used Java Script to perform checking and validations at Client's side.
• Involved in Sever side validation based on the Business rules.
• Developed Servlets and JSPs based on MVC pattern using Struts framework and Spring Framework.
• Worked on JQuery, AJAX, JASON and JSF for designing highly user interactive web pages.
• Developed Stored Procedures, Triggers and Packages in Oracle.
• Developed DAO pattern for Database connectivity.
• Used JDBC API to establish connection between Java and Database.
• Designed and developed the user interface screens, database design changes and changes to user access modules.
• Developed additional UI Components using JSF and implemented an asynchronous, AJAX (JQuery) based rich client to improve customer experience.
• Developed server-side common utilities for the application and the front-end dynamic web pages using JSP, Java Script and HTML/DHTML and CSS.
• Implemented test cases for Unit testing of modules using JUnit.

Environment: IBM Websphere, Spring, Java JDK, J2EE, JSP, Servlets, Hibernate, HTML, JavaScript, JDBC, Struts, XML, JUnit, RAD, Oracle 10g.

Confidential

Software Engineer

Responsibilities:

• Interacting business analysts for requirements gathering for system dependencies.
• Participated in peer reviews and walkthroughs of program, code & test specifications.
• Worked on Struts Framework components like struts-config.xml, validator-rules.xml, validation.xml, struts action classes, form-beans.
• Worked on creation of Hibernate configuration files and mapping files for persistence layer (JPA) and transaction management.
• Played typical role in application enhancement using Spring MVC framework.
• Implemented data access layer by Object Relational Mapping (ORM) tool - HIBERNATE with standard DAO pattern and HQL Queries.
• Worked on Service Oriented Architecture (SOA) using Web ServicesJAX-WS.
• Extensively used AJAX for validations with Direct Web Remoting (DWR).
• RAD6.0 was used as an IDE for developing the application.
• Written customized UNIX scripts (C& TC, Bourne Shell programming) and moved them to production environment after stress testing.
• Java IO API was used for reading and writing java objects.
• Ensured minimum count of Tickets in queue by fixing errors within time constraints.
• Designed and implemented exception handling strategies.
• Followed RUP methodologies during the project execution time.
• Wrote extensive SQL Queries for the purpose of data retrieval and data manipulation using JDBC and JNDI on Oracle.
• Setup Weblogic 8.1 during deployment and testing.
• IBM Rational Clear Case6.0 has been used for the purpose of version control.
• IBM Rational Clear Quest6.0 has been used for bug tracking.
• Developed JUnitTest classes for testing the application code.

Environment: Java, Jsp, DHTML, HTML, servlet, EJB, JDBC, JNDI, AJAX 1.5, XML, PL/SQL, Struts, Hibernate 2.0, Spring, SOA Web services (JAX-WS), JAX-RS, IBM Rational Clear Quest, IBM Rational Clear Case, Log4j, Maven Plug-in, RAD, Weblogic, Toad, Jboss, UNIX, Oracle 10g.

Confidential 

Junior Java Developer

Responsibilities:

• Involved in all phases of Software Development Life Cycle (SDLC).
• Developed SQL queries and stored procedures for the application.
• Worked with JDBC and modified SQL Queries for better performance.
• Worked with front end using JSP, JSTL, HTML, JavaScript and CSS.
• Involved in developing applications using Java, J2EE, EJB, Struts, JSP and Servlet.
• Created the UI validations using Struts validation framework.
• Used Eclipse IDE for the development of the application.
• Performed Unit testing and regression testing on the application.
• Involved in testing and fixing the defects.
• Developed database schema and SQL queries for querying Oracle database.
• Used Apache Tomcat Server for deploying various components of application.

Environment: Java, J2EE, JSP, HTML, Java Script, Oracle, SQL, JDBC, XML, Servlet, Apache Tomcat, Eclipse and Agile.