PROFESSIONAL SUMMARY:

• Overall 8 years of experience with strong emphasis on Design, Development, Implementation, Testing and Deployment of Software Applications.
• Over 4+ years of comprehensive IT experience in BiData and BiData Analytics, Hadoop, HDFS, MapReduce, YARN, Hadoop Ecosystem and Shell Scripting.
• 5+ years of development experience using Java, J2EE, JSP and Servlets.
• Highly capable for processing large sets of Structured, Semi - structured and Unstructured datasets and supporting BiData applications.
• Hands on experience with Hadoop Ecosystem components like Map Reduce (Processing), HDFS (Storage), YARN, Sqoop, Pig, Hive, HBase, Oozie, ZooKeeper and Spark for data storage and analysis.
• Expertise in transferring data between a Hadoop ecosystem and structured data storage in a RDBMS such as MY SQL, Oracle, Teradata and DB2 using Sqoop.
• Experience in NoSQL databases like Mongo DB, HBase and Cassandra.
• Experience in Apache Spark cluster and streams processing using Spark Streaming.
• Expertise in moving large amounts of log, streaming event data and Transactional data using Flume.
• Experience in developing MapReduce jobs in Java for data cleaning and preprocessing.
• Expertise in writing Pig Latin, Hive Scripts and extended their functionality using User Defined Functions (UDF's).
• Expertise in handling arrangement of data within certain limits (Data Layout's) using Partitions and Bucketing in Hive.
• Extensively used Microservices and Postman for hitting teh Kubernetes DEV and Hadoop clusters.
• Deployed various Microservices like Spark, MongoDB, Cassandra in Kubernetes and Hadoop clusters using Docker.
• Expertise in preparing Interactive Data Visualization's using Tableau Software from different sources.
• Hands on experience in developing workflows execute MapReduce, Sqoop, Pig, Hive and Shell Scripts using Oozie.
• Experience working with Cloudera Hue Interface and Impala.
• Hands on experience developing Solar Indexes using MapReduce Indexer Tool.
• Expertise in Object-Oriented Analysis and Design (OOAD) like UML and use of various design patterns.
• Experience in Java, JSP, Servlets, EJB, Web Logic, Web Sphere, Hibernate, and spring, JBoss, JDBC, RMI, Java Script, Ajax, JQuery, XML and HTML.
• Fluent with teh core Java concepts like me/O, Multi-Threading, Exceptions, Reg Ex, Data Structures and Serialization.
• Performed Unit Testing using Junit Testing Framework and Log4J to monitor teh error logs.
• Experience in process Improvement, Normalization/De-normalization, Data extraction, cleansing and Manipulation.
• Converting requirement specification, Source system understanding into Conceptual, Logical and Physical Data Model, Data flow (DFD).
• Expertise in working with Transactional Databases like Oracle, SQL server, My SQL, and Db2.
• Expertise in developing SQL queries, Stored Procedures and excellent development experience with Agile Methodology.
• Ability to adapt to evolving technology, Strong sense of Responsibility and .
• Excellent leadership, interpersonal, problem solving and time management skills.
• Excellent communication skills both Written (documentation) and Verbal (presentation).

TECHNICAL SKILLS:

Languages: Core JAVA, J2EE, SQL, Python, C, C++, PL/SQL, Hive, PIG

Application/Web Servers: Apache Tomcat 4.0/5.0/6.0, Web Logic 8.1/9.1, Web Sphere 7.0, Web Sphere Application Server 8.0 & RAD 7.5/8.5, JBoss

Java Technologies: J2EE/J2SE(JSP, JSTL, JavaBeans, Servlets, Web services, RESTful API, JDBC)

Web Technologies: Servlets, JSP, JDBC, JSF, Spring, Hibernate, AngularJS, Node.js, HTML, HTML4, HTML5, CSS, CSS3, DHTML, AJAX, Java Script, JQuery, Bootstrap, JSON, XML, XSL, XSLT, REST/SOAP Web services, GWT, JNDI, JSTL, JMS, JPA, EJB, WSDL, JAX-RS, JSX-WS, Dojo and Java Beans.

XML Technologies: XML, DTD, XSD, XSLT, SOAP, DOM Parser and SAX Parser

BiData Technologies: HDFS, Hive, Map Reduce, Pig, Sqoop, Oozie, Zookeeper, YARN, and Spark.

Databases: Oracle 8i/9i/10g/11g/12c, My SQL, MS SQL Server, DB2, Mongo DB, MS Access, Cassandra.

Frame Works: Struts, Spring (Dependency Injection, Spring MVC, Spring Access.DAO, Factory Pattern, Core, Spring Context, Spring AOP, Spring DAO, Spring IOC, Spring JDBC, Springwith Hibernate), Hibernate, DWR.

Development Tools: Eclipse, WSAD, IntelliJ Idea, NetBeans RAD, Dojo, WID (Web Sphere Integration Designer)

PROFESSIONAL EXPERIENCE:

Confidential, Bloomington, MN

Sr. Hadoop Developer

Responsibilities:

• Performed performance tuning and troubleshooting of MapReduce jobs by analyzing and reviewing Hadooplog files.
• Involved Low level design for MR, Hive, Impala, Shell scripts to process data.
• Involved in complete Big Data flow of teh application starting from data ingestion upstream to HDFS, processing teh data in HDFS and analyzing teh data.
• Knowledge on handling Hive queries using Spark SQL dat integrate with Spark environment implemented in Scala.
• Used Spark Streaming API with Kafka to build live dashboards; Worked on Transformations & actions in RDD, Spark Streaming, Pair RDD Operations, Check - pointing, and SBT.
• Wrote Junit tests and Integration test cases for those microservices.
• Implemented POC to migrate map reduce jobs into Spark RDD transformation using Scala IDE for Eclipse.
• Creating Hive tables to import large data sets from various relational databases using Sqoop and export teh analyzed data back for visualization and report generation by teh BI team.
• Installing and configuring Hive, Sqoop, Flume, Oozie on teh Hadoop clusters.
• Involved in scheduling Oozie workflow engine to run multiple Hive and Pig jobs.
• Developed a process for teh Batch ingestion of CSV Files, Sqoop from different sources and also generating views on teh data source using Shell Scripting and Python.
• Integrated a shell script to create Collections/morphine, SolrIndexes on top of table directories using MapReduce Indexer Tool within Batch Ingestion Framework.
• Implemented partitioning, dynamic partitions and buckets in HIVE.
• Developed Hive Scripts to create teh views and apply transformation logic in teh Target Database.
• Involved in teh design of Data Mart and Data Lake to provide faster insight into teh Data.
• Involved in using Stream Sets Data Collector tool and created Data Flows for one of teh streaming application.
• Experienced in using Kafka as a data pipeline between JMS (Producer) and Spark Streaming Application (Consumer). Involved in creating UI using Node.js and called different microservices to setup teh frontend.
• Involved in teh development of Spark Streaming application for one of teh data source using Scala, Spark by applying teh transformations.
• Developed a script in Scala to read all teh Parquet Tables in a Database and parse them as Json files, another script to parse them as structured tables in Hive.
• Designed and Maintained Oozie workflows to manage teh flow of jobs in teh cluster.
• Configured Zookeeper for Cluster co-ordination services.
• Developed a unit test script to read a Parquet file for testing Pypark on teh cluster.
• Involved in exploration of new technologies like AWS, Apache Flink, and Apache NIFIetc which can increase teh business value.

Environment: Hadoop, HDFS, Map Reduce, Hive, HBase, Zookeeper, Impala, Java(jdk1.6), Cloudera, Oracle, SQL Server, UNIX Shell Scripting, Flume, Oozie, Scala, Spark, Sqoop, Python, kafka, PySpark.

Confidential, Dallas, TX

Hadoop Developer

Responsibilities:

• Responsible for Writing MapReduce jobs to perform operations like copying data on HDFS and defining job flows on EC2 server, load and transform large sets of structured, semi - structured and unstructured data.
• Developed a process for Scooping data from multiple sources like SQL Server, Oracle and Teradata.
• Responsible for creation of mapping document from source fields to destination fields mapping.
• Developed a shell script to create staging, landing tables with teh same schema like teh source and generate teh properties which are used by Oozie jobs.
• Developed Oozie workflow s for executing Sqoop and Hive actions.
• Worked with NoSQL databases like HBase in creating HBase tables to load large sets of semi structured data coming from various sources.
• Performance optimizations on Spark/Scala. Diagnose and resolve performance issues.
• Responsible for developing Python wrapper scripts which will extract specific date range using Sqoop by passing custom properties required for teh workflow.
• Developed scripts to run Oozie workflows, capture teh logs of all jobs dat run on cluster and create a metadata table which specifies teh execution times of each job.
• Developed Hive scripts for performing transformation logic and also loading teh data from staging zone to final landing zone.
• Worked on Parquet File format to get a better storage and performance for publish tables.
• Involved in loading transactional data into HDFS using Flume for Fraud Analytics.
• Developed Python utility to validate HDFS tables with source tables.
• Designed and developed UDF S to extend teh functionality in both PIG and HIVE.
• Import and Export of data using Sqoop between MySQL to HDFS on regular basis.
• Responsible for developing multiple Kafka Producers and Consumers from scratch as per teh software requirement specifications.
• Involved in using CA7 tool to setup dependencies at each level (Table Data, File and Time).
• Automated all teh jobs for pulling data from FTP server to load data into Hive tables using Oozie workflows.
• Involved in developing Spark code using Scala and Spark-SQL for faster testing and processing of data and exploring of optimizing it using Spark Context, Spark-SQL, Pair RDD's, Spark YARN.
• Migrating teh needed data from Oracle, MySQL in to HDFS using Sqoop and importing various formats of flat files in to HDFS.

Environment: Hadoop, HDFS, Map Reduce, Hive, HBase, Kafka, Zookeeper, Oozie, Impala, Java(jdk1.6), Cloudera, Oracle, Teradata SQL Server, UNIX Shell Scripting, Flume, Scala, Spark, Sqoop, Python.

Confidential, El Segando, CA

Hadoop Developer

Responsibilities:

• Responsible for Managing, Analyzing and Transforming petabyte s of data and also quick validation check on FTP file arrival from S3 Bucket to HDFS.
• Responsible for analyzing large data sets and derive customer usage patterns by developing new MapReduce programs.
• Experienced in creation of Hive tables and loading data incrementally into teh tables using Dynamic Partitioning and Worked on Avro Files, JSON Records.
• Experienced in using Pig for data cleansing and developed Pig Latin scripts to extract teh data from web server output files to load into HDFS.
• Worked on Hive by creating external and internal tables, loading it with data and writing Hive queries.
• Involved in development and usage of UDTF s and UDAF s for decoding Log Record Fields and Conversion s, Generating Minute Buckets for teh specified Time Interval s and JSON Field Extractor.
• Developed Pig and Hive UDF's to analyze teh complex data to find specific user behavior.
• Responsible for Debug, Optimization of Hive Scripts and also implementing Deduplication Logic in Hive using a Rank Key Function (UDF).
• Experienced in writing Hive Validation Scripts which are used in validation framework (for daily analysis through graphs and presented to business users).
• Developed workflow in Oozie to automate teh tasks of loading data into HDFS and pre - processing with Pig and Hive.
• Involved for Cassandra Database Schema design.
• Using BULK LOAD Utility data pushed to Cassandra databases.
• Responsible for creating Dashboards on Tableau Server.
• Generated reports for hive tables in different scenarios using Tableau.
• Responsible for Scheduling using Active Batch jobs and Cron jobs.
• Experienced in Jar builds dat can be triggered by commits to Github using Jenkins.
• Exploring new tools for data tagging like Tealium (POC Report).
• Actively updated teh upper management with daily updates on teh progress of project dat include teh classification levels dat were achieved on teh data.

Environment: Hadoop, Map Reduce, HDFS, Pig, Hive, HBase, Zookeeper, Oozie, Impala, Cassandra, Java(jdk1.6), Cloudera, Oracle 11g/10g, Windows NT,UNIX Shell Scripting, Tableau, Tealium.

Confidential, Cincinnati, OH

Sr. Java Developer

Responsibilities:

• Responsible for understanding teh scope of teh project and requirements gathering.
• Used MapReduce to Index teh large amount of data to easily access specific records.
• Supported MapReduce Programs which are running on teh cluster.
• Developed MapReduce programs to perform data filtering for unstructured data.
• Designed teh application by implementing Struts Framework based on MVC Architecture.
• Designed and developed teh front end using JSP, HTML and JavaScript and JQuery.
• Developed framework for data processing using Design patterns, Java, XML.
• Implemented J2EE standards, MVC2 architecture using Struts Framework.
• Implementing Servlets, JSP and Ajax to design teh user interface.
• Used JSP, Java Script, HTML5, and CSS for manipulating, validating, customizing, error messages to teh User Interface.
• Used teh light weight container of teh Spring Framework to provide architectural flexibility for Inversion of Controller (IOC).
• Used Spring IOC for dependency injection to Hibernate and Spring Frameworks.
• Designed and developed Session beans to implement teh Business logic.
• Developed EJB components dat are deployed on Web logic Application Server.
• Written unit tests using Junit Framework and Logging is done using Log4J Framework.
• Used Html, CSS, JavaScript and JQuery to develop front end pages.
• Designed and developed various configuration files for Hibernate mappings.
• Designed and Developed SQL queries and Stored Procedures.
• Used XML, XSLT, XPATH to extract data from Web Services output XML
• Extensively used JavaScript, JQuery and AJAX for client - side validation.
• Used ANT scripts to fetch, build, and deploy application to development environment.
• Developed Web Services for sending and getting data from different applications using SOAP messages.
• Actively involved in code reviews and bug fixing.
• Applied CSS (Cascading style Sheets) for entire site for standardization of teh site.
• Offshore co-ordination and User acceptance testing support.

Environment: Java 5.0, Struts, Spring 2.0, Hibernate 3.2, WebLogic 7.0, Eclipse 3.3, Oracle 10g, Junit 4.2,Maven, Windows XP,J2EE, JSP, JDBC, Hibernate, spring, HTML, XMLCSS, JavaScript and JQuery.

Confidential

Software Programmer

Responsibilities:

• Involved in teh analysis & design of teh application using Rational Rose.
• Developed teh various action classes to handle teh requests and responses.
• Designed and created Java Objects, JSP pages, JSF, JavaBeans and Servlets to achieve various business functionalities and created validation methods using JavaScript and Backing Beans.
• Involved in writing client side validations using JavaScript, CSS.
• Involved in teh design of teh Referential Data Service module to interface with various databases using JDBC.
• Used Hibernate framework to persist teh employee work hours to teh database.
• Developed classes and interface with underlying web services layer.
• Prepared documentation and participated in preparing user's manual for teh application.
• Prepared Use Cases, Business Process Models and Data flow diagrams, User Interface models.
• Gatheird & analyzed requirements for EAuto, designed process flow diagrams.
• Defined business processes related to teh project and provided technical direction to development workgroup.
• Analyzed teh legacy and teh Financial Data Warehouse.
• Participated in Data base design sessions, Database normalization meetings.
• Managed Change Request Management and Defect Management.
• Managed UAT testing and developed test strategies, test plans, reviewed QA test plans for appropriate test coverage.
• Involved in Developing JSP's, action classes, form beans, response beans, EJB's.
• Extensively used XML to code configuration files.
• Developed PL/SQL stored procedures, triggers.
• Performed functional, integration, system and validation testing.

Environment: Java, J2EE, JSP, JCL, DB2, Struts, SQL, PL/DSQL, Eclipse, Oracle, Windows XP, HTML, CSS, JavaScript, and XML.