Data Java Developer
Resume:
Sukumar Balla
************@*****.***
SUMMARY
Over 7+ years of professional IT experience with 3+ Years of Big Data Hadoop Ecosystems experience in ingestion, storage, querying, processing and analysis of big data.
Excellent understanding / knowledge of Hadoop architecture and various components such as HDFS, Job Tracker, Task Tracker, NameNode, Data Node and MapReduce programming paradigm.
Proficient in Installation, Configuration and migrating and upgrading of data from Hadoop MapReduce, HIVE, HDFS, HBase, Sqoop, Oozie, Pig, Cloudera, Zookeeper, Spark, Scala, Flume and Cassandra, Netezza NZsql.
Experience in installation, configuration, supporting and managing - CloudEra's Hadoop platform along with CDH3&4 clusters.
Experience with leveraging Hadoop ecosystem components including Pig and Hive for data analysis, Sqoop for data migration, Oozie for scheduling and HBase as a NoSQL data store.
Good Exposure on Apache Hadoop Map Reduce programming, PIG Scripting and Distribute Application and HDFS.
Experience in NoSQL database MongoDB and Cassandra.
Responsible for performing ETL using PIG & Spark and ingest data into Elastic Search.
Experience in importing and exporting data using Sqoop from HDFS to Relational Database Systems and vice-versa.
Experienced in deployment of Hadoop Cluster using Puppet tool.
Experience in Hadoop Shell Programming, writing MapReduce Programs, verifying managing and reviewing Hadoop Log files.
Proficient in configuring Zookeeper, Cassandra & Flume to the existing Hadoop cluster.
In depth knowledge of Job Tracker, Task Tracker, NameNode, Data Nodes and MapReduce concepts.
Experience in understanding the security requirements for Hadoop and integrate with Kerberos authentication and authorization infrastructure.
Experience in scheduling Cron jobs on EMR, Kafka, Spark using Clover Server.
Experience in Big Data analysis using PIG and HIVE and understanding of SQOOP and Puppet.
Good understanding of HDFS Designs, Daemons, federation and HDFS high availability (HA).
Experienced in developing MapReduce programs using Apache Hadoop for working with Big Data.
Experience in developing customized UDF’s in java to extend Hive and Pig Latin functionality.
Good experience in implementing and setting up standards and processes for Hadoop based application design and implementation.
Experience in importing and exporting data using Sqoop from HDFS to Relational Database Systems and vice-versa.
Experience using middleware architecture using Sun Java technologies like J2EE, JSP, Servlets, and application servers like Web Sphere and Web logic.
Familiarity working with popular frameworks likes Struts, Hibernate, Spring MVC and AJAX.
Experience in Object Oriented language like Java and Core Java.
Experience in creating web-based applications using JSP and Servlets.
Experience in managing Hadoop clusters using Cloudera Manager Tool.
Very good experience in complete project life cycle (design, development, testing and implementation in AWS ) 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.
Hands on experience in application development using Java, RDBMS, and Linux shell scripting.
Ability to adapt to evolving technology, strong sense of responsibility and accomplishment.
Educational Qualifications:
Masters in Computer Science, California University of Management and Sciences, Anaheim, California
Bachelor of Engineering in Computer Science, Hitam College- Jawaharlal Nehru Technological University (JNTU), Hyderabad, India
Technical Skills:
Hadoop/Big Data
HDFS, MapReduce, HBase, Pig, Hive, Sqoop, Oozie, Spark
Languages
Java, SQL, XML, C++, C, WSDL, XHTML, HTML, CSS, Java Script, AJAX, PLSQL.
Java Technologies
Java, J2EE, Hibernate, JDBC, Servlets, JSP, JSTL, JavaBeans, JQuery and EJB.
Frame Works
Struts and Spring.
ETL Tools
Informatica, Pentaho
Design and Modeling
UML and Rational Rose.
Web Services
SOAP, WSDL, UDDI.
Scripting languages
Java Script, Shell Script
XML technologies
DTD,XSD,XML, XSL, XSLT, SAX, DOM, JAXP
Version Control
CVS, Clear case, SVN
Databases
Oracle 10g/9i/8i, SQL Server,DB2, MS-Access
Environments
UNIX, Red Hat Linux, Windows 2000/ server 2008/2007, Windows XP.
PROFESSIONAL EXPERIENCE
Duration: Jan 2014 – Till Date
Role: Sr. Hadoop Developer & Big Data Analyst
Company: UHG, CT
Environment: Apache Hadoop, HDFS, Cassandra, Hive, Java, Sqoop, Cloudera CDH4, Oracle, MySQL, Tableau, Talend, Python.
Responsibilities:
Have setup the 64 node cluster and configured the entire Hadoop platform.
Migrating the needed data from Oracle, MySQL in to HDFS in using Sqoop and importing various formats of flat files in to HDFS.
Proposed an automated system using Shell script to sqoop the job.
Worked in Agile development approach.
Created the estimates and defined the sprint stages.
Developed a strategy for Full load and incremental load using Sqoop.
Mainly worked on Hive queries to categorize data of different claims.
Integrated the hive warehouse with HBase
Written customized Hive UDFs in Java where the functionality is too complex.
Implemented Partitioning, Dynamic Partitions, Buckets in HIVE.
Generate final reporting data using Tableau for testing by connecting to the corresponding Hive tables using Hive ODBC connector.
Maintained System integrity of all sub-components (primarily HDFS, MR, HBase, and Hive).
Monitored System health and logs and respond accordingly to any warning or failure conditions.
Presented data and dataflow using Talend for reusability.
Duration: Jul 2012 to Dec 2013
Role: Hadoop Developer
Company: HP, Houston, TX
Environment: Apache Hadoop, HDFS, Hive, Map Reduce, Java, Cloudera CDH4, Oozie, Oracle, MySQL, Amazon S3.
Responsibilities:
Acted as a lead resource and build the entire Hadoop platform from scratch.
Evaluated suitability of Hadoop and its ecosystem to the above project and implementing / validating with various proof of concept (POC) applications to eventually adopt them to benefit from the Big Data Hadoop initiative.
Estimated the Software & Hardware requirements for the Namenode and Datanodes in the cluster.
Extracted the needed data from the server into HDFS and BulkLoaded the cleaned data into HBase using MapReduce.
Responsible to migrate from Hadoop to Spark frameworks, in-memory distributed computing for real time fraud detection.
Written the Map Reduce programs, Hive UDFs in Java.
Used Map Reduce JUnit for unit testing.
Develop HIVE queries for the analysts.
Created an e-mail notification service upon completion of job for the particular team which requested for the data.
Defined job work flows as per their dependencies in Oozie.
Played a key role in productionizing the application after testing by BI analysts.
Maintain System integrity of all sub-components related to Hadoop.
Duration: Feb 2010 to June 2012
Role: Sr. Systems Engineer (ATG/Java Developer)
Company: Mastermind Information Systems, Bangalore, India
Environment: ATG, JAVA, JSP, Oracle 9i, 10g, Weblogic 10.3.5, SOAP, RESTFul, SVN, SQL Developer, UNIX, Eclipse. XML, HTML, CSS, JavaScript, AJAX, JQUERY.
Responsibilities:
Understanding and analyzing business requirements, High Level Design and Detailed Design
Involved in three releases of versions eShop 2.0.1, eShop 2.1 & eShop 2.2.
Provided high level systems design; this includes specifying the class diagrams, sequence diagrams and activity diagrams
Utilized Java/J2EE Design Patterns - MVC at various levels of the application and ATG Frameworks
Worked extensively on DCS (ATG Commerce Suite) using the commerce API to accomplish the Store Checkout.
Expertise in developing JSP’s, Servlets and good with web services (REST, SOAP)
Served as DB Administrator, creating and maintaining all schemas
Collaborated in design, development and maintenance of the Front-end for applications using JSP, JSTL, Custom Tags
Duration: Oct 2008 to Jan 2010
Role: Java Developer
Project: Global Insurance System
Company: Oriental Insurance, Bangalore, INDIA
Environment: JAVA, JSP 2.0, JavaScript, CSS, HTML, XML, Weblogic Application Server 8.1, Eclipse, Oracle 9i.
Responsibilities:
Involved in development, testing and maintenance process of the application
Used Struts framework to implement the MVC architecture
Created JSP, Form Beans for effective way of implementing Model View Controller architecture
Created Session Beans, Entity beans for transactions with the database using JDBC
Developed necessary SQL queries for database transactions
Developed and maintained the application configuration information in various properties files
Designed and developed HTML front screens and validated user input using JavaScript
Used Cascading Style Sheets (CSS) to give a better view to the web pages
Used Eclipse for code development along with CVS for managing the code
Performed testing and bug fixing
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