Professional Summary

• Over 8 yearsof experience in Analysis Design Development Implementation Integration and testing of Application Software in web-based environments distributed n-tier products and Client/Server architectures.
• Experience in SDLC and Object Oriented Application Design and Programming.
• Experience in OO Design using IBM Rational Rose and UML.
• Extensive knowledge and programming skills in SCALA
• Extensive knowledge of Cassandra and Cassandra with Hadoop
• Strong programming skills in Core Java and J2EE technologies
• Strong programming skills in advanced frameworks like spring Struts and Hibernate.
• Strong experience with SOA and WebServices
• Strong hands on experience with Big Data Technologies including Hadoop HDFS MapReduce PIG HIVE HBASE ZOOKEEPER SQOOP
• Extensive knowledge in developing application in PYTHON language for multiple platforms design and maintain database using PYTHON
• Experience in creating complex SQL Queries and SQL tuning writing PL/SQL blockslike stored procedures Functions Cursors Index triggers and packages.
• Experience with databases like DB2 Oracle 9i Oracle 10g MySQL SQL Server and MS Access.
• Experience with advance technologies like MongoDB and advanced framework like Spring Roo.
• Extensive experience in creating Class Diagrams Activity Diagrams Sequence Diagrams using Unified Modeling Language UML
• Experienced in SDLC Agile SCRUM Methodology Iterative Waterfall Model
• Extensive experience in Software design methodologies. Proficient in web application development using J2EE components on JBoss Web Logic and Web Sphere Servlets JSP JSF JNDI RMI JDBC Apache Struts applying design patterns and Web Services
• Expertise in developing web based GUIs using Applets Swing Servlets JSP HTML XHTML JavaScript and CSS.
• Extensive experience in Java and J2EE technologies like Servlets JSP JSF JDBC RMI JNDI
• Expertise in creating XML DTD XML Schemas XSLT XPath DOM/SAX Parser and web designing using HTML CSS and JavaScript jQuery .
• Good knowledge in Web Services and Hibernate O/R Mapping tool
• Expertise in deploying applications in JBoss 3.0/4.0 Apache and Tomcat 4.0/5.0/5.5 WebSphere 6.0 Weblogic 8.1
• Strong hands on experience with Production Support
• Experience in developing ANT scripts to build and deploy Java web applications.
• Experience in developing test cases performing Unit Testing Integration Testing experience in QA with test methodologies and skills for manual/automated testing using tools like WinRunner JUnit.
• Experience with various version control systems Clear Case CVS PVCS and VSS SVN.
• Experience with Business Rules engines like JRules and Drools.
• Excellent communication skills team player quick learner organized resilient and self-motivated.

Technical Skills

• Big Data Ecosystem Hadoop 0.22.0 MapReduce HDFS HBase Zoo Keeper Hive Pig Sqoop Impala Kafka.
• Java/J2EE Java 6 Ajax Log4j JSP 2.1 Servlets 2.3 JDBC 2.0 XML Java Beans
• Methodologies Agile UML Design Patterns
• Frameworks Struts Hibernate Spring
• DataBase Oracle 10g PL/SQL MySQL
• Application Server Apache Tomcat 5.x 6.0 JBoss 4.0
• Web Tools HTML Java Script Scala XML XSL XSLT XPath DOM
• IDE/ Testing Tools NetBeans Eclipse
• Scripts Bash ANT SQL HiveQL Shell Scripting
• Testing API JUNIT

Professional Experience

Confidential

Hadoop Developer

Responsibilities

• Installed/Configured/Maintained Apache Hadoop clusters for application development and Hadoop tools like Hive Pig HBase Zookeeper and Sqoop.
• 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.
• Standalone Pseudo-distributed Fully Distributed
• Developed Pig Latin scripts to extract the data from the web server output files to load into HDFS
• Developed the Pig UDF S to pre-process the data for analysis
• Develop Hive queries for the analysts
• Developed workflow in Oozie to automate the tasks of loading the data into HDFS and pre-processing with Pig.
• Cluster co-ordination services through Zookeeper.
• Collected the logs data from web servers and integrated in to HDFS using Flume.
• Implemented Fair schedulers on the Job tracker to share the resources of the Cluster for the Map Reduce jobs given by the users.
• Managed and reviewed Hadoop log files

Environment Hadoop Hbase HDFS Hive Java jdk1.6 Pig Zookeeper Oozie Flume.

Confidential

Hadoop Developer

Responsibilities

• Proactively monitored systems and services architecture design and implementation of Hadoop deployment configuration management backup and disaster recovery systems and procedures.
• Involved in analyzing system failures identifying root causes and recommended course of actions.
• Worked with systems engineering team to plan and deploy new Hadoop environments and expand existing Hadoop clusters.
• Monitored multiple Hadoop clusters environments using Ganglia and Nagios. Monitored workload job performance and capacity planning using Cloudera Manager.
• Installed and configured Flume Hive Pig Sqoop and Oozie on the Hadoop cluster.
• Used Flume to collect aggregate and store the web log data from different sources like web servers mobile and network devices and pushed to HDFS.
• Analyzed the web log data using the HiveQL to extract number of unique visitors per day page- views visit duration most purchased product on website.
• Exported the analyzed data to the relational databases using Sqoop for visualization and to generate reports for the BI team.
• Integrated Oozie with the rest of the Hadoop stack supporting several types of Hadoop jobs out of the box like Java MapReduce Pig Hive Sqoop as well as system specific jobs such as Java programs and shell scripts .
• Involved in installing and configuring Kerberos for the authentication of users and Hadoop daemons.

Environment CDH4 Flume Hive Sqoop Pig Oozie Cloudera Manager Java Linux CentOS

Confidential

Hadoop Developer

Responsibilities

• Developed self-contained micro-analytics on Search platform leveraging the content and prior capabilities associated with the MRL Search Pilot.
• Developed search/analytics product features and fixes following an Agile methodology.
• Applied Big Data tools e.g. Hadoop Accumulo Lucene Hive AWS-ec2 to enable search and analytics.
• Developed test cases for codebase using JMockit API.
• Wrote Hive queries for ingesting and indexing data from Merck Chemical Identifier Database MCIDB which is used by Merck scientists for performing research activities throughout the Drug Discovery phase.
• Developed custom UDFs in Hive for enhancing search capabilities by using Chemistry Development Kit CDK Library.
• Created cron jobs to ingest and index data periodically.
• Developed Puppet scripts to install Hive Sqoop etc on the nodes.
• Actively took part in daily scrum meetings bi-weekly sprint planning and closeout meetings.
• Worked with highly engaged Informatics Scientific Information Management and enterprise IT teams.

Environment Hadoop Hive Accumulo Lucene Sqoop AWS-EC2 Puppet

Confidential

Java Developer

Responsibilities

Involved in gathering system requirements for the application and worked with the business team to review the requirements and went through the Software Requirement Specification document and Architecture document.

Involved in designing UML Use case diagrams Class diagrams and Sequence diagrams using Rational Rose.

Created Functional specification documents FSD and JSON contracts

Developed the application using Spring Framework that uses Model View Controller MVC architecture with JSP as the view.

Developed presentation layer using JSP HTML and CSS and JQuery.

Developed JSP custom tags for front end.

Written Java script code for Input Validation.

Extensively used Spring IOC for Dependency Injection.

Developed J2EE components on Eclipse IDE.

Used Restful web services with JSON.

Used Apache CXF open source tool to generate java stubs form WSDL.

Used Oracle10g database for tables creation and involved in writing SQL queries using Joins and Stored Procedures.

Used Hibernate for Object-Relational Mapping and for database operations in Oracle database.

Developed Action classes and DAO classes to access the database.

Developed several POJO class to map table data into Java Object.

Used SQL developer database tool to build edit and format database queries as well as eliminate performance issues in the code.

Used tortoise SVN tool to keep track of all work and all changes in source code.

Used JUnit for testing the application and Maven for building Projects

Deployed the applications on Web sphere Application Server.

Environment Java 6 JDK 1.6 JEE Spring 3.1 framework Spring Model View Controller MVC Java Server Pages JSP 2.0 Servlets 3.0 JDBC4.0 AJAX Web services Rest full JSON Java Beans JQuery JavaScript Oracle 10g IBM RAD Web sphere Agile Methodology Design Patterns SVN Apache Maven JUnit HTML Unit XSLT HTML/DHTML.

Confidential

Java Developer

Responsibilities

• Responsible to write UNIX shell scripts to automate the Build process.
• Written shell script files to update the configuration and application data corrections.
• Developed client modules for the SOA Integration.
• Used Java/J2EE Design Patterns like Session Fa ade DAO Pattern and MVC Pattern.
• Developed user interface using JSF Primefaces with Java Beans MDB s Custom Tag Libraries and AJAX to speed the application.
• Involvement with full cycle development of software which include Requirement Gathering Design and Develop Applications.
• Actively participated in Project Designing using JSF Framework and SDLC phases of the MTM-Project.
• Implemented controllers services part.
• Used web services concepts like SOAP WSDL JAXB and JAXP to interact with other projects for sharing information.
• Involved in initial designing and creating Usecase diagrams sequence diagrams and class diagrams using STAR-UML tool.
• Used SVN for software configuration management and version control.
• Implemented Spring Dependency Injection.
• Implemented springsecurity features to different modules of the Project.
• Implemented POJO based domain model integrated with Hibernate ORM for persistence.
• Added and modified existing Business JRules based on continuously changing business requirements and performed Unit testing to ensure system stability and consistency.
• Implemented Routing Rule Engine using IBM ILOG JRules.
• Wrote JUnit Test Cases to test workflow.
• Monitored logs by using LOG4J.

Environment JDK1.6 Core Java EJB 3.0 Eclipse Helios SQL-Server Servlets 2.5 Spring DI Spring Security JSF Prime Faces 3.2 IBM-DB2 IBM-Data Studio Hibernate Web services Restful JUnit 4.8 UNIX Windows XP IBM ILOG JRules 7.2 SVN Maven and Log4J.

Confidential

Java Developer

Responsibilities

• Analyzed Business Requirements and Identified mapping documents required for system and functional testing efforts for all test scenarios.
• Performed Requirement Gathering Analysis by actively soliciting analyzing and negotiating customer requirements and prepared the requirements specification document for the application using Microsoft Word.
• Developed Use Case diagrams business flow diagrams Activity/State diagrams.
• Adopted J2EE design patterns like Service Locator Session Facade and Singleton.
• Configuration of application using spring Hibernate DAO s Actions Classes Java Server Pages.
• Configuring Hibernate and Tiles related XML files.
• Developed presentation layer using JavaServer Faces JSF MVC framework.
• UsedJSP HTML and CSS JQueryas view components in MVC.
• Extensively used Spring IOC for Dependency Injection and worked on Custom MVC Frameworks loosely based on Struts.
• 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.
• Deployed the applications on WebsphereApplication Server
• Developed Web servicesusing Restful and JSON.
• Used Oracle11g database for tables creation and involved in writing SQL queries using Joins and Stored Procedures.
• Used Toad database tool to develop oracle quires.
• Writing complex SQL queries and reviewing SQL queries for the other team members.
• Developed JUnit Test Cases for Code unit test.
• Worked with configuration management groups for providing various deployment environments set up including System Integration testing Quality Control testing etc.

Environment J2EE Hibernate RAD RSA SQL Developer Oracle 11g Rational Clear Case Rational Clear Quest Rational Requisite Pro UML MS Visio MS Office.