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Sr. Hadoop Consultant Resume

Sunnyvale, CA


  • 8 Years of Professional IT experience in Big Data, Hadoop, Java /J2EE and Cloud technologies in Financial, Retail and HealthCare domains.
  • Over 4 years of experience in Big Data platform as both Developer and Administrator.
  • Experience in building high performance and scalable solutions using various Hadoop ecosystem tools like Pig, Hive, Sqoop, Impala, Spark, Solr and Kafka.
  • Responsible for designing and building a DataLake using Hadoop and its ecosystem components.
  • Handled Data Movement, data transformation, Analysis and visualization across teh lake by integrating it with various tools.
  • Defined extract - translate-load (ETL) and extract-load-translate (ELT) processes for teh Data Lake.
  • Experienced working with ETL tools like Talend and Inforamtica.
  • Extensively worked on Spark and its components like Sparksql, SparkR and Spark streaming for data manipulation preparation and cleansing.
  • Good knowledge on analysing streaming data and defined real time data streaming solutions across teh cluster using Spark Streaming, Apache Storm, Kafka, Nifi and Flume.
  • Experienced in writing Spark SQL scripts and implementing Spark transformations and actions usingPython.
  • Very good understanding and Working Knowledge of Object Oriented Programming (OOPS) and Python.
  • Good Expertise in Planning, Installing and Configuring Hadoop Cluster based on teh business needs.
  • Installed and configured multiple Hadoop clusters of different sizes and with ecosystem components like Pig, Hive, Sqoop, Flume, HBase, Oozie and Zookeeper.
  • Worked on all major distributions of Hadoop Cloudera (CDH4, CDH5), Hortonworks (HDP 2.2, 2.4) and MapR.
  • Experience in implementing Failover mechanisms for Namenode, Resource Manager and Hive.
  • Configured AWSEC2 instances, S3Buckets, Cloud services and architected teh flow of data to and from AWS.
  • Transformed and aggregated data for analysis by implementing work flow management of Sqoop, Hive and Pig scripts.
  • Experience working on different file formats like Avro, Parquet, ORC, Sequence and Compression techniques like Gzip, Lzo, snappy in Hadoop.
  • In-Depth knowledge of Scala and Experience building Spark applications using Scala.
  • Good experience working on Tableau and Spotfire and enabled teh Jdbc/Odbc data connectivity from those to Hive tables.
  • Well versed with SQL/PL SQL and Oracle database in writing queries, stored procedures, triggers and functions.
  • Experience in developing Applications using Java, J2EE, JSP, MVC, Servlets, Struts, Hibernate, JDBC, JSF, EJB, XML, AJAX and web based development tools.
  • Expertise in web Technologies like HTML, CSS, PHP, XML.
  • Worked on various Tools and IDEs like Eclipse, IBM Rational, Apache Ant-Build Tool, MS-Office, PLSQL Developer, SQL*Plus.
  • Highly motivated with teh ability to work independently or as an integral part of a team and Committed to highest levels of profession.


Big Data / Hadoop: HDFS, MapReduce, HBase, Kafka, PIG, HIVE, Sqoop, Impala and Flume, Talend

Real time/Stream Processing: Apache Storm, Apache Spark

Cloud Technologies: Amazon web services, EC2, S3, EMR, Redshift

Operating Systems: Windows, Unix and Linux

Programming Language: C, Java, J2EE, SQL

Data Base: Oracle 9i/10g, SQL Server, MS Access

Web Technologies: HTML, XML, JavaScript

IDE Development Tools: Eclipse, NetBeans

Methodologies: Agile, Scrum and Waterfall


Confidential, Sunnyvale, CA

Sr. Hadoop Consultant


  • Installing, configuring and testing Hadoop ecosystem components like MapReduce, HDFS, Pig, Hive, Sqoop, Flume, Oozie, Hue and HBase.
  • Imported data from various sources into HDFS and Hive using Sqoop.
  • Involved in writing custom MapReduce, Pig and Hive programs.
  • Experience in writing customized UDF's in java to extend Hive and Pig Latin functionality.
  • Created Partitions and Buckets in Hive for both Managed and External tables for optimizing performance.
  • Worked on several PoC's involving No SQL Databases like HBase, MongoDB and Cassandra.
  • Configured Tez as execution engine for Hive queries to improve teh performance.
  • Developed a data pipeline using Kafka and Storm to store data into HDFS and performed teh real time analytics on teh incoming data.
  • Hands on experience in Spark and Spark Streaming creating RDD's, Applying operations -Transformation and Actions on it.
  • Developed Spark code using Pythonand Spark-SQL for faster data processing.
  • Configured Spark streaming to receive real time data from teh Kafka and store teh stream data to HDFS using Scala.
  • In-depth knowledge of Scala and experienced in building teh Spark applications using Scala.
  • Configured Flume to stream data into HDFS and Hive using HDFS Sinks and Hive sinks.
  • Collecting and aggregating large amounts of log data using Apache Flume and staging data in HDFS for further analysis.
  • Involved in scheduling Oozie workflow engine to run multiple Hive, Pig and Spark jobs.
  • Worked with application teams to install operating system, Hadoop updates, patches, version upgrades as required.
  • Experience in Commissioning, Decommissioning, Balancing, and Managing Nodes and tuning server for optimal performance of teh cluster.

Environment: Hadoop, MapReduce, HDFS, Pig, Hive, Sqoop, AWS, LINUX, Spark, Kafka, Hbase, Solr and UNIX

Confidential, Atlanta, GA

Sr. Hadoop Developer


  • Installed, Configured and Maintained Apache Hadoop clusters for application development and Hadoop tools like Hive, Pig, Hbase and HDFS.
  • Designing and implementing semi-structured data analytics platform leveraging Hadoop.
  • Worked on performance analysis and improvements for Hive and Pig scripts at MapReduce job tuning level.
  • Used Sqoop to load data from RDBMS into HDFS.
  • Worked on implementing several POCs to validate and fit teh several Hadoop eco system tools on CDH and Hortonworks distributions
  • Involved in Hadoop cluster task like Adding and Removing Nodes without any TEMPeffect to running jobs and data.
  • Designed and Implemented Error-Free Data Warehouse-ETL and Hadoop Integration.
  • Proficient in data modelling with Hive partitioning, bucketing, and other optimization techniques in Hive
  • Developed Pythonscripts to automate and provide Control flow to Pig scripts for extracting teh data and load into HDFS.
  • Developed workflow in Oozie to automate teh tasks of loading teh data into HDFS and pre-processing with Pig.
  • Worked in Spark streaming to get ongoing information from theKafkaand store teh stream information to HDFS.
  • Set up standards and processes for Hadoop based application design and implementation.
  • Wrote Shell scripts for several day-to-day processes and worked on its automation.
  • Collected teh logs data from web servers and integrated in to HDFS using Flume.
  • Implemented Fair Schedulers on teh Job tracker to share teh resources of teh Cluster for teh Map Reduce jobs given by teh users.
  • Worked on establishing connectivity between Tableau and Spotfire.

Environment: Hadoop, HDFS, Map Reduce, Spark, Java, HIVE, PIG, HBase, Sqoop, Flume, Linux, UNIX.

Confidential, King of Prussia, PA

Hadoop Developer


  • Responsible for building scalable distributed data solutions usingHadoop.
  • Collection and Downloading of data generated by sensors from teh Patients body activities to HDFS.
  • Performed necessary transformations and aggregation to build teh common learner data model in NoSQL store (Hbase).
  • Used Pig, Hive and MapReduce for analyzing teh Health insurance data and patient information.
  • Developed workflow in Oozie to orchestrate a series of Pig scripts to remove, merge and compress files using pig pipelines in teh data preparation stage.
  • Used Pig UDF's in Python, Java code and used sampling of large data sets.
  • Moving all log files generated from various sources to HDFS for further processing through Flume.
  • Extensively used PIG to communicate with Hive and Hbase using Hcatalog and Handlers.
  • Involved in transforming data from legacy tables to HDFS, and Hbase tables using Sqoop.
  • Implemented test scripts to support test driven development and continuous integration.
  • Exported analyzed data to relational databases using Sqoop for visualization and generate reports for teh BI team.
  • Good understanding of ETL tools and their application to Big Data environment.

Environment: Hadoop, Map Reduce, HDFS, Hive, Pig, Oozie, Java, Hbase, Flume, Oracle 10g, UNIX Shell Scripting.

Confidential, St Petersburg, FL

Java Developer


  • Designed teh application in J2EE architecture and developed dynamic and browser compatible User Interfaces for on-line account management, order and payment processing.
  • Used Hibernate Object relational mapping (ORM) to achieve data persistence.
  • Developed Servlets and JSPs based on MVC pattern using Spring Framework.
  • Developed required helper classes following CoreJavamulti-threaded programming.
  • Developed teh presentation layer using JSP, Tag libraries, HTML, CSS and client validations using JavaScript.
  • Developed hibernate DAO Classes using Spring JDBC Template and Methods in teh DAO layer to persist teh POJOS in teh database.
  • Designed and developed Web services based on SOAP and WSDL for handling transaction history.
  • Involved in designing and developing teh JSON, XML Objects with MySQL.
  • Developed web applications using Spring MVC, jQuery and implemented Spring Dependency Injection mechanism.
  • Integrated user interface, server layer and persistence layer using Spring IOC, AOP and Spring MVC integration with OBPM and Hibernate.
  • Developed data access classes using JDBC and created SQL queries and used PL/SQL procedures with Oracle Database.
  • Used LOG4J & JUnit for debugging, testing and maintaining teh system state andtested teh website with older and latest versions/releases on multiple browsers.
  • Implemented test cases for Unit testing of modules using JUnit and used ANT for building teh project.
  • Provided production support for two of teh applications involving swing and struts framework.

Environment: JDK 1.6, JSP, HTML, JavaScript, JSON, XML, jQuery, Servlets, Spring MVC, Hibernate, Web Services, SOAP, NetBeans.

Confidential, Charlotte, NC

Java Developer


  • Worked with Business analysts and Product owners to analyse and understand teh requirements and giving teh estimates.
  • Implement J2EE design patterns such as Singleton, DAO, DTO and MVC.
  • Developed dis web application to store all system information in a central location using Spring MVC, JSP, Servlet and HTML.
  • Used SpringAOP module to handle transaction management services for objects in any Spring-based application.
  • Implemented Spring DI and Spring Transactions in business layer.
  • Developed data access components using JDBC, DAOs, and Beans for data manipulation.
  • Designed and developed database objects like Tables, Views, Stored Procedures, User Functions using PL/SQL, SQLDeveloperand used them in WEB components.
  • Used iBATIS for dynamically building SQL queries based on parameters.
  • Developed JavaScript and JQuery functions for all Client side Validations.
  • Developed Junit test cases for Unit Testing &Used Maven as build and configuration tool.
  • Used Shell scripting to create jobs to run on daily basis.
  • Debugged teh application using Firebug and traversed through teh nodes of teh tree using DOM functions.
  • Monitored teh error logs using log4jand fixed teh problems.
  • Used Eclipse IDE and deployed teh application on Web Logic server.
  • Responsible for configuring and deploying teh builds on Web Sphere App Server.

Environment: Java, J2EE,JavaScript, XML, JavaScript, JDBC, Spring Framework, Hibernate, Rest Full Web services, Web Logic Server, Log4j, JUnit, ANT, SoapUI, Oracle11g.

Confidential, Plano TX

Java Developer


  • Design and development of Java classes using Object Oriented Methodology.
  • Worked insystemusing Java, JSP and SERVLET.
  • Development of Java classes and methods for handling Data from database.
  • Created and modified web pages using HTML and CSS with JavaScript validation.
  • Used JDBC/Jconnect for Oracle.
  • Create SQL script to create/drop database objects like tables, views, indexes, constraints, sequences and synonyms.
  • Developed SQL*Loader scripts to load teh data from external files that is exported from SQL Server.
  • Creating complex PLSQL packages incorporating multi-org functionality with many modules merged together, by working with complex queries, complex Joins and conditions.
  • Developing efficient queries and views to produce customers delight.
  • Creating Servlets, JSP for administration module.
  • Creating Unix Shell Scripts for sequential execution of Java scripts including data extraction, loading and Oracle Stored Procedure execution.
  • Developing many KSH scripts for data file movement and scheduling.
  • Attended and Conducted User meetings for requirement analysis and project reporting.
  • Testing and bug fixing and providing support teh production.

Environment: Windows XP, Oracle 9i database, EJB 2.1, JSP, Struts Framework, BEA Web logic 8.1, HTML, JavaScript, and Eclipse.


Java Developer


  • Collecting and understanding teh User requirements and Functional specifications.
  • Development of GUI Using HTML, CSS, JSP and JavaScript.
  • Creating components for isolated business logic.
  • Deployment of application in J2EE Architecture.
  • Using Oracle 8i as teh Database Server.
  • Designing EJB 2.0 components with various design patterns like Service Locator and Business Delegate.
  • Finalize teh design specifications for teh new system.
  • Involvement in design, development and maintenance of teh application.
  • Performing Unit Integration and performance testing and continuous interaction with Quality Assurance group.
  • Provided on call support based on teh priority of teh issues.

Environment: Java, JSP, SQL, MS-Access, JavaScript, HTML.

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