PROFESSIONAL SUMMARY:

• Around 8+ years of professional Software Development experience which includes 6 years of experience in Java/J2EE Development and 3 years in Big Data Ecosystem
• Strong experience in building High performing Bigdata Hadoop distributed systems and Datawarehousing applications that manage the large volumes of variety of data.
• Strongexperience with Hadoop framework and its ecosystem components such as: HDFS, MapReduce, PIG, HIVE, IMPALA, SQOOP, FLUME and YARN.
• In depth understanding/knowledge of Hadoop Architecture and its components such as HDFS, Job Tracker, Task Tracker, Name Node, Data Node and MapReduce.
• Expertise in writing Hadoop Jobs for analyzing data using MapReduce, Hive and Pig.
• Strong understanding of OOPs concepts, excellent programming skills in Java and MapReduce.
• Experience in importing and exporting data using Sqoop from HDFS to Relational Database Systems and vice - versa.
• Experienced in extending Hive and Pig core functionality by writing custom UDF’s using Java.
• Experiencein working with large data sets using NoSQL database: HBase. Good knowledge in Cassandra.
• Experienced in job workflow scheduling and monitoring tools: Oozieand Zookeeper.
• Knowledge of administrative tasks such as installing Hadoop and its ecosystem components such as Hive and Pig.
• Good understanding of Spark architecture. Have done POC to process real time streaming data using Spark and Scala.
• Experience in developing solutions to analyze large data sets efficiently.
• Experience in Data Warehousing and ETL processesandStrong experience with ETL tool: Informatica power center andGood exposure with BI tools: OBIEE and Business Objects.
• Good understanding of Datawarehouse concepts: Star Schema Modeling, and Snowflake modeling, FACT and Dimensionstables, Summary tables and Slowly Changing dimensions.
• Experience with InformaticaPowerCenter Client tools - Designer, Repository manager, workflow manager/monitor and Server tools - Informatica Server, Repository Server manager.
• Expertise in implementing complex business rules by creatingmappings using various Informatica transformations, Sessions and Workflows.
• Good experience with UNIX Commands andShell scripting.
• Good experience in developing applications using Java/J2EE technologies like Core Java, JDBC, JSP, Servlets, EJB, Javascript, and HTML.
• Good experience with Hibernate,Struts, JSF and Web services. Good knowledge in MVCarchitecture and Various J2EE Design patterns.
• Strong Database skills. Good experience with Oracle (SQL, PL/SQL), SQL Server and DB2.Expertise in writing database objects like Stored Procedures, Triggers, SQL, PL/SQL packages, Functions and Cursors.
• Proficient in document management, able to prioritize and complete multiple tasks.
• Having strong technical skills, good problem research, trouble shooting and resolution skills.
• Confident possession of communication skills besides adaptability and quick learning.

TECHNICAL SKILLS:

Operating Systems: MS-DOS, WINDOWS, UNIX, HP-UX, AIX, LINUX, MVS, Z/OS

Hadoop Ecosystem: HDFS, MAP REDUCE, PIG, HIVE, HIVE QL, IMPALA, SQOOP, FLUME, YARN, SPARK, OOZIE, ZOOKEEPER

NOSQL Databases: HBASE, Neo4j, MangoDB, Couchbase, Cassandra

RDBMS Databases/Tools: Oracle (SQL, PL/SQL), SQL Server, DB2, Toad, SQL Navigator, SQL Server Management studio

DWH ETL Tools: Informatica Power Center 7.1/8.6/9.1, Oracle Warehouse Builder, Erwin (data modeling tool)

DWH Reporting Tools: Business Objects-XI, Cognos report net & 8BI, OBIEE, DAC

JAVA /J2EE /Web Technologies: Core Java, JDBC, JSP, Servlets, Javascript, AJAX, HTML, XML, XSLT, Struts, Hibernate, EJB, Spring, Webservices, SOAP, WSDL.

Other Tools/Software: UNIX Shell scripting, Putty, SecureFX, Secure CRT, WinSCP, HP-Reflection, Appworx, Autosys, FTP, MQ-Series, JMS, Maven, Ant, Junit, Websphere, UML, OOAD, Eclipse IDE, Netbeans, MS-Visio, MS-Office, Lotus Notes, Visual Source Safe (VSS),IBMClear case, TeamPrise Foundation Server (TFS), HP Quality Center, Admini Track, IBM Clear Quest, Remedy, HP OpenView Service desk, IBM-Mainframes, Cobol, Jcl, Ims-db, Vsam, Spufi and Tso/ispf.

PROFESSIONAL EXPERIENCE:

Confidential, Redwood city, CA

Hadoop Developer

Responsibilities:

• Involved in collecting the business requirements for the project.
• Attended business meetings to gather the requirements and wrote functional requirements document based on it.
• Participated in technical discussions and overall architecture as well as to communicate with the other integration teams.
• Design advanced systems by researching and evaluating complex business systems to develop detailed understanding of user needs;
• Work with users to define system requirements and create resolution;
• Work as a team member on large, highly complex technical/programming projects under minimal direction of senior staff and management;
• Regularly lead small to medium size projects, perform project management activities such as planning, sizing, configuration and scheduling activities;
• Develop solutions and make decisions that impact projects and staff members;
• Perform analysis, write program specifications and develop designs for medium to large size projects;
• Written Mapreduce, Hive Jobs to process the data as per business requirements to analyze further by data analytics.
• Load and transferred large complex sets of structured, semi-structured and unstructured data using Sqoop
• Used Hive partitioning and bucketing to improve the performance and to maintain historical data in tables in modular fashion.
• Written oozie workflows to schedule batch jobs
• Perform analysis, resolve problems and monitor to proactively prevent problems from occurring;
• Evaluate options for meeting user needs, and ensure that system requirements are identified, prioritized and incorporated in an effective, efficient manner;
• Troubleshoot complex development and production application problems and provide technical and production support on an on-call basis; and
• Work with project stakeholders to define system requirements for various projects.
• Used Apache Spark for large-scale data processing, handling real-time analytics and real streaming of data.
• Integrated Business Intelligence Reporting Solution like Tableau with various databases

Environment: Hortonworks Data Platform 2.1, Linux, HDFS, MapReduce, Yarn,Tableau, Spark, Hive, Sqoop, Oozie, Tez, Java, TeraData.

Confidential, San Rafael, CA

Hadoop Developer

Responsibilities:

• Worked with Business analysts and Converted Business requirements into Technical requirements.
• Received the large volumes of data from various sources into HDFS.
• Written Map Reduce code to preprocess the data.
• Created Hive external tables on top of the valid data sets.
• Developed complex business rules using Hive and Pig to transform and store the data in an efficient manner for Business Intelligence.
• Written Hive User defined functions (UDF’s) to accomplish critical logic.
• Used Informatica for ETL processing based on business needs and extensively used Oozie workflow engine to run multiple Hive and Pig jobs
• Provided NoSql solutions in MongoDB, Cassandra for data extraction and storing huge amount of data
• Used Sqoop to import/Export the data from RDBMS system into HDFS system.
• Very good experience with both MapReduce 1 (Job Tracker/Task Tracker) and MapReduce 2 (YARN)
• Wrote complex queries in SQL for performance tuning
• Worked closely with Business Stakeholders, UX Designers, Solution Architects and other team members to achieve results together
• Participated in business requirement analysis, solution design, detailed design, solution development, testing and deployment of various productsDelivered robust, flexible and scalablesolutions with a dedication to high quality that meet or exceed customer requirements and expectations

Environment: Java, Hadoop, Hive, Pig, Oozie, Sqoop, YARN, MongoDB, Cassandra, SQL, XML, Eclipse, Maven, JUnit, Linux, Windows, Subversion.

Confidential, Memphis, TN

Java Developer

Responsibilities:

• Involved in the designing of the project using UML.
• Followed J2EE Specifications in the project.
• Designed the user interface pages in JSP.
• Used XML and XSL for mapping the fields in database.
• Used JavaScript for client side validations.
• Created stored procedures and triggers that are required for project.
• Created functions and views in Oracle.
• Enhanced the performance of the whole application using the stored procedures and prepared statements.
• Responsible for updating database tables and designing SQL queries using PL/SQL.
• Created bean classes for communicating with database.
• Involved in documentation of the module and project.
• Prepared test cases and test scenarios as per business requirements.
• Involved in bug fixing.
• Prepared coded applications for unit testing using JUnit.

Environment: Java, JSP, Servlets, J2EE, EJB 3, Java Beans, Oracle, HTML, DHTML, XML, XSL, JavaScript, BEA WebLogic.

Confidential

Java Developer

Responsibilities:

• Understanding of System Requirements both functional as well as Technical.
• Involved in design and development of presentation layer using HTML, JSP.
• Developed beans, action classes, various business delegates, session facades and DAO
• Involved in designing the screens and client/Server side validations using JavaScript and validation frame work
• Participated in UAT and also incorporating the feedback/changes received from system users.
• Responsible for deployment of this application in test server
• Testing and debugging of the code.

Environment: Java1.4, JSP1.2, Servlets, Struts 1.3.1(Framework), Web logic, MySQL, JavaScript, Eclipse, Windows 2000.

Confidential

Java developer

Responsibilities:

• Involved in Full Life Cycle Development in Distributed Environment Using Java and J2EE framework.
• Responsible for developing and modifying the existing service layer based on the business requirements.
• Involved in designing & developing web-services using SOAP and WSDL.
• Involved in database design.
• Created tables, stored procedures in SQL for data manipulation and retrieval, Database Modification using SQL, PL/SQL, Stored procedures, triggers, Views in Oracle 9i.
• Created User Interface using JSF.
• Involved in integration testing the Business Logic layer and Data Access layer.
• Integrated JSF with JSP and used JSF Custom Tag Libraries to display the value of variables defined in configuration files.
• Used technologies like JSP, JSTL, JavaScript and Tiles for Presentation tier
• Involved in JUnit testing of the application using JUnit framework.
• Written Stored Procedures functions and views to retrieve the data.
• Used Maven build to wrap around Ant build scripts.
• CVS tool is used for version control of code and project documents.
• Responsible to mentor/work with team members to make sure the standards and guide lines are followed and delivery of tasks in time.

Environment: JQuery, JSP, Servlets, JSF, JDBC, HTML, JUnit, JavaScript, XML, SQL, Maven, Web Services, UML, WebLogic Workshop and CVS.