We provide IT Staff Augmentation Services!

Hadoop Developer Resume



  • Over 7+ years of IT experience with 4+ years of Big Data experience.
  • Experience in installing, configuring and troubleshooting Hadoop ecosystem components like Map Reduce, HDFS, Sqoop, Impala, Pig, Flume, Hive, HBase, Zoo Keeper
  • Experience on Hadoop CDH3 and CDH4,CDH5
  • Experience in upgrading the existing Hadoop cluster to latest releases.
  • Experienced in using NFS (network file systems) for Name node metadata backup.
  • Experience in using Cloudera Manager 4.0, 5.0 for installation and management of Hadoop cluster.
  • Experience in supporting data analysis projects using Elastic Map Reduce on the Amazon Web Services (AWS) cloud.
  • Exporting and importing data into S3.
  • ConfiguredName node HA on the existingHadoopcluster using Zookeeper quorum
  • Expertise in writing Shell scripting in UNIX using ksh and bash
  • Experienced in developing and implementing Map Reduce jobs using java to process and perform various analytics on large datasets
  • Good experience in writing Pig Latin scripts and Hive queries
  • Good understanding of Data Structure and Algorithms
  • Good experience on developing of ETL Scripts for Data cleansing and Transformation
  • Experience in Data migration from existing data stores and mainframe NDM (Network Data mover) to Hadoop.
  • Experience in designing both time driven and data driven automated workflows using Oozie.
  • Experience in supporting analysts by administering and configuring HIVE.
  • Hands - on programming experience in various technologies like JAVA, JSP, Servlets, SQL, JDBC, HTML, XML, REST, Eclipse, Visual Studio on Windows.
  • Experience writing SQL queries and working with Oracle and My SQL.
  • Expertise in Object-oriented analysis and programming(OOAD) like UML and use of various design patterns
  • Have dealt with end users in requirement gathering, user experience and issues
  • Experience in preparing deployment packages and deploying to Dev and QA environments and prepare deployment instructions to Production Deployment Team
  • Team player with excellent analytical, communication and project documentation skills
  • Agile Methodology and Iterative development


Programming Languages: Java, C, C++, SQL

Hadoop Ecosystems: HDFS, Hive, Pig, Flume, Impala, Oozie, Zookeeper, HBASE and Sqoop.

Operating System: Linux, Windows XP, Server 2003, Server 2008.

Databases: Oracle, MySQL and SQL Server.

Web Technologies: Applets, JavaScript, CSS, HTML and XHTML

Tools: Ant, Maven, TOAD, AgroUML, WinSCP, Putty

Version Control: VSS, SVN and CVS


Confidential, MD

Hadoop Developer


  • Gathered the business requirements from the Business Partners and Subject Matter Experts.
  • Involved in installing Hadoop Ecosystem components on 50 nodes production.
  • Installed and configured the Hadoop name node ha service using Zookeeper.
  • Installed and configured Hadoop security and access controls using Kerberos, Active Directory
  • Responsible to manage data coming from different sources into hdfs through Sqoop, Flume
  • Troubleshooting and monitoring Hadoop services using Cloudera manager.
  • Monitoring and tuning Map Reduce Programs running on the cluster.
  • Involved in HDFS maintenance and loading of structured and unstructured data.
  • Developed several Map Reduce Programs for data preprocessing
  • Imported data using Sqoop to load data from MySQL to HDFS on regular basis.
  • Wrote Hive queries for data analysis to meet the business requirements.
  • Exporting data from RDBMS to HIVE, HDFS and HIVE, HDFS to RDBMS by using SQOOP.
  • Prepared System Design document with all functional implementations.
  • Involved in Data model sessions to develop models for HIVE tables.
  • Understanding the existing Enterprise data warehouse set up and provided design and architecture suggestion converting to Hadoop using MapReduce, HIVE, SQOOP and Pig Latin.
  • Converting ETL logic to Hadoop mappings.
  • Extensive hands on experience in Hadoop file system commands for file handling operations.
  • Worked on Sequence files, RC files, Map side joins, bucketing, partitioning for hive performance enhancement and storage improvement.
  • Worked with parsing XML files using Map reduce to extract sales related attributed and store it in HDFS.
  • Involved in building TBUILD scripts to import data from Teradata using Teradata Parallel transport APIs.

Environment: CDH, Hadoop, HDFS, MapReduce, Hive, Sqoop, Pig, XML, Cloudera Manager, Teradata

Confidential, MI

Hadoop Devops Consultant


  • Development and ETL Design in Hadoop
  • Developed Mapreduce Input format to read visa specific data format.
  • Performance tuning of Hive Queries written by data analysts.
  • Developing Hive queries and udf’s as per requirement.
  • Migrating existing Ab initio transformation logic to Hadoop Pig Latin and Udf's.
  • Used Sqoop to efficiently Transfer data from DB2 to HDFS, Oracle Exadata to HDFS
  • Designing ETL flow for several newly on boarding Hadoop Applications.
  • Worked on implementing Hadoop Streaming, Python mapreduce for visa analytics
  • Implemented NLine Input Format to split a single file into multiple small files
  • Designed and Developed oozie workflows, integration with Hcatalog/Pig.
  • Documented ETL Best Practices to be implemented with Hadoop
  • Monitoring and Debugging Hadoop jobs/Applications running in production.
  • Worked on Hadoop CDH upgrade from CDH4.x to CDH5.x.
  • Worked on Providing User support and application support on Hadoop Infrastructure.
  • Reviewing ETL application use cases before on boarding to Hadoop.
  • Worked on Evaluating, comparing different tools for test data management with Hadoop.
  • Helping testing team to get up to speed on Hadoop Application testing.
  • Worked on Integration of Hiveserver2 with Tableau.
  • Worked on impala performance tuning with different workloads and file formats.
  • Worked on Installing 20 node UAT Hadoop cluster
  • Worked on POC of Talend integration with hadoop

Technologies: Hadoop, HDFS, MapReduce, Hive, Sqoop, Pig, DB2, Oracle, XML, Cloudera Manager


Hadoop Developer


  • Worked on the Hadoop File System Java API to develop or Compute the Disk Usage Statistics.
  • Experience in Developing the Hive queries for the transformations, aggregations and Mappings on the Maps Data.
  • Developed map reduce programs for applying business rules on the data
  • Developed and executed Hive Queries for denormalizing the data.
  • Automated workflow using Shell Scripts.
  • Performance Tuning on Hive Queries.
  • Involved in migration of data from Hadoop Cluster to the Hadoop Cluster.
  • Worked on configuring multiple Map Reduce Pipelines, for the new Hadoop Cluster.
  • Worked on Configuring the New Hadoop Cluster.

Environment: Java, CDH, Hadoop, HDFS, Map Reduce, Hive and Sqoop


Java Developer


  • Developed the user interface screens using Swing for accepting various system inputs such as contractual terms, monthly data pertaining to production, inventory and transportation.
  • Involved in designing Database Connections using JDBC.
  • Involved in design and Development of UI using HTML, JavaScript and CSS.
  • Involved in creating tables, stored procedures in SQL for data manipulation and retrieval using SQL SERVER 2000, Database Modification using SQL, PL/SQL, Stored procedures, triggers, Views in Oracle.
  • Developed the business components (in core Java) used for the calculation module (calculating various entitlement attributes).
  • Involved in the logical and physical database design and implemented it by creating suitable tables, views and triggers.
  • Created the related procedures and functions used by JDBC calls in the above components.
  • Involved in fixing bugs and minor enhancements for the front-end modules.

Environment: Java, HTML, Java Script, CSS, Oracle, JDBC, Swing and Eclipse.

Hire Now