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Sr. Hadoop Developer Resume

Wilmington, DE


  • 8+ years of professional experience in Requirements Analysis, Design, Development and Implementation of Java, J2EE and Big Data technologies.
  • 4+ years of exclusive experience in Big Data technologies and Hadoop ecosystem components like Spark, MapReduce, Hive, Pig, YARN, HDFS, Sqoop, Flume, Kafka and NoSQL systems like HBase, Cassandra.
  • Strong Knowledge on Architecture of Distributed systems and Parallel processing, In - depth understanding of MapReduce Framework and Spark execution framework.
  • Expertise in writing end to end Data Processing Jobs to analyze data using MapReduce, Spark and Hive.
  • Extensive experience in working with structured data using Hive QL, join operations, writing custom UDF’s and experienced in optimizing Hive Queries.
  • Experience using various Hadoop Distributions (Cloudera, Hortonworks, Amazon AWS) to fully implement and leverage new Hadoop features.
  • Proficient in using Cloudera Manager, an end-to-end tool to manage Hadoop operations in Cloudera Cluster.
  • Experience in Apache Flume and Kafka for collecting, aggregating and moving huge chunks of data from various sources such as web server, telnet sources etc.
  • Extensive experience in writing Pig scripts to transform raw data from several data sources into forming baseline data.
  • Extensive experience in importing/exporting data from/to RDBMS the Hadoop Ecosystem using Apache Sqoop.
  • Worked on Java HBase API for ingestion processed data to HBase tables
  • Strong experience in working with UNIX/LINUX environments, writing shell scripts.
  • Good knowledge and experience of Real time streaming technologies Spark and Kafka.
  • Experience in optimization of MapReduce algorithm using Combiners and Partitioners to deliver the best results.
  • Very good understanding of Partitions, Bucketing concepts in Hive and designed both Managed and External tables in Hive to optimize performance.
  • Extensive experiences in working with semi/unstructured data by implementing complex MapReduce programs using design patterns.
  • Sound knowledge of J2EE architecture, design patterns, objects modeling using various J2EE technologies and frameworks.
  • Adept at creating Unified Modeling Language (UML) diagrams such as Use Case diagrams, Activity diagrams, Class diagrams and Sequence diagrams using Rational Rose and Microsoft Visio.
  • Extensive experience in developing applications using Java, JSP, Servlets, JavaBeans, JSTL, JSP Custom Tag Libraries, JDBC, JNDI, SQL, AJAX, JavaScript and XML.
  • Experienced in using Agile methodologies including extreme programming, SCRUM and Test Driven Development (TDD).
  • Proficient in integrating and configuring the Object-Relation Mapping tool, Hibernate in J2EE applications and other open source frameworks like Struts and Spring.
  • Experience in building and deploying web applications in multiple applications servers and middleware platforms including Web logic, Web sphere, Apache Tomcat, JBoss.
  • Experience in writing test cases in Java Environment using JUnit.
  • Hands on experience in development of logging standards and mechanism based on Log4j.
  • Experience in building, deploying and integrating applications with ANT, Maven.
  • Good knowledge in Web Services, SOAP programming, WSDL, and XML parsers like SAX, DOM, AngularJS, Responsive design/Bootstrap.
  • Demonstrated technical expertise, organization and client service skills in various projects undertaken.
  • Strong commitment to organizational work ethics, value based decision-making and managerial skills.


Big Data Ecosystem: Hadoop, MapReduce, YARN, HDFS, HBase, Zookeeper, Hive, Hue, Pig, Sqoop, Cassandra, Spark, Oozie, Storm, Flume, Talend, Cloudera Manager, Amazon AWS, Hortonworks clusters.

Languages: C, Java, PL/SQL, Pig Latin, Python, HiveQL. Scala, SQL

Java/J2EE & Web Technologies: J2EE, EJB, JSF, Servlets, JSP, JSTL, CSS, HTML, XHTML, CSS, XML, Angular JS, AJAX.

Frame works: Struts, Spring 3.x, ORM (Hibernate), JPA, JDBC

Web Services: SOAP, RESTful, JAX-WS

Web Servers: Web Logic, Web Sphere, Apache Tomcat.

Scripting Languages: Shell Scripting, Java script.

Database: Oracle 9i/10g, Microsoft SQL Server, MySQL, DB2, Teradata SQL, RDBS, MongoDB, Cassandra, HBase

Design: UML, Rational Rose, E-R Modelling, Microsoft Visio

IDE & Build Tools: Eclipse, NetBeans, ANT and Maven.

Version Control System: CVS, SVN, GITHUB.


Confidential, Wilmington, DE

Sr. Hadoop Developer

  • Implemented best practices for the full software development life cycle including coding standards, code reviews, source control management and build processes.
  • Processed data ingested into HDFS using Sqoop, custom HDFS Adaptors and analyzed the data using Spark, Hive, MapReduce and produced summary results from Hadoop to downstream systems.
  • Create/Modify Shell scripts for scheduling data cleansing scripts and ETL loading process.
  • Developed Spark applications to perform all the data transformations on User behavioral data coming from multiple sources.
  • Configured Spark streaming to receive real time data from the Kafka and store the stream data to HDFS using Scala (Prototype).
  • Implemented Spark using Scala and SparkSQL for faster testing and processing of data.
  • Used Sqoop to import the data to Hadoop Distributed File System (HDFS) from RDBMS. 
  • Created components like Hive UDFs for missing functionality in HIVE for analytics.
  • Worked on various performance optimizations like using distributed cache for small datasets, Partition, Bucketing in Hive and Map Side joins.
  • Used Oozie and Oozie coordinators to deploy end to end data processing pipelines and scheduling the work flows.

Environment: HDFS, Hadoop 2.x, Pig, Hive, Sqoop, Flume, Spark, MapReduce, Scala, Oozie, Oracle 11g, YARN, UNIX Shell Scripting, Agile Methodology, JIRA, Cloudera 5.4,

Confidential, Herndon, VA

Sr. Hadoop Developer

  • Developed Big Data Solutions that enabled the business and technology teams to make data-driven decisions on the best ways to acquire customers and provide them business solutions.
  • Worked on automation of delta feeds from Teradata using Sqoop, also from FTP Servers to Hive.
  • Implemented Hive tables and HQL Queries for the reports. Written and used complex data type in Hive.
  • Developed Hive queries to analyze reducer output data.
  • Designed workflow by scheduling Hive processes for Log file data, which is streamed into HDFS using Flume.
  • Responsible for managing data coming from different sources.
  • Developed MapReduce (YARN) programs to cleanse the data in HDFS obtained from heterogeneous data sources to make it suitable for ingestion into Hive schema for analysis.
  • Designed and developed Map Reduce jobs to process data coming in different file formats like XML, CSV, JSON. 
  • Used Sqoop to import the data from RDBMS to Hadoop Distributed File System (HDFS) and later analyzed the imported data using Hadoop Components.
  • Involved in loading and transforming large sets of Structured, Semi-Structured and Unstructured data and analyzed them by running Hive queries and Pig scripts.
  • Implemented daily workflow for extraction, processing and analysis of data with Oozie.

Environments: Hadoop 2.x, Hive, HQL, HDFS, MapReduce, Sqoop, Flume, Oozie, Python, Java, Maven, Eclipse, Putty, Cloudera Manager 4 and CDH 4

Confidential, Boston, MA

Hadoop Developer

  • Understanding business needs, analyzing functional specifications and map those to develop and designing MapReduce programs and algorithms.
  • Created Hive Tables, loaded transactional data from Teradata using Sqoop.
  • Developed MapReduce jobs for cleaning, accessing and validating the data.
  • Implemented Hive Generic UDF’s to incorporate business logic into Hive Queries.
  • Analyzed the web log data using the HiveQL to extract number of unique visitors per day, page views, visit duration, most visited page on website.
  • Written Hive jobs to parse the logs and structure them in tabular format to facilitate effective querying on the log data.
  • Wrote Pig scripts to transform raw data from several data sources.
  • Monitored workload, job performance and capacity planning using Cloudera Manager.
  • Involved in build applications using Maven and integrated with Continuous Integration servers like Jenkins to build jobs.
  • Involved in End-to-End implementation of ETL logic.
  • Performing data migration from Legacy Databases RDBMS to HDFS using Sqoop.
  • Worked collaboratively with all levels of business stakeholders to architect, implement and test Big Data based analytical solution from disparate sources.
  • Involved in Agile methodologies, daily Scrum meetings, Sprint planning.

Environment: Hadoop 1.x, HDFS MapReduce, Hive, Pig, HBase, Sqoop, Oozie, Maven, Shell Scripting, CDH3, Cloudera Manager

Confidential, Chicago, IL

Sr. Java Developer

  • Created the design documents with use case and sequence diagrams in conjunction to developing the project framework.
  • Used Core Java concepts like (Collections, Multithreading, Garbage Collection and OOPs concepts) and APIs to do encryption and compression of incoming request to provide security and save memory foot print.
  • Followed Scrum development cycle to streamline process with iterative and incremental development.
  • Developed JSP screens using Tiles, custom TagLibs, JSP templates and JSTL.
  • Implemented the associated business modules integration using Spring and Hibernate.
  • Developed various business components like Session Beans and managed database transactions.
  • Developed the service framework functionality following the design patterns.
  • Used JSF framework in developing user interfaces using JSF UI Components, Validator, Events.
  • Supported JSF components using enables AJAX functionalities and Facelets for templates.
  • Developed PL/SQL statements including stored procedures and triggers to perform the business.
  • Implemented Spring service layer with dependency wiring, transaction, DAO and annotations.
  • Performed code review, unit testing, functional testing, system testing and integration testing.
  • Implemented Log4j log framework and custom code for configuring logging levels.
  • Provided production support and troubleshoot the requests from end-users.
  • Involved in database design and coding SQL for Oracle.

Environment: J2EE, Hibernate 3.0, JSF, Facelets CSS, AJAX, JavaScript, Rational Rose, EJB2.0, Spring1.2, JSP 2.0, Servlet 2.3, XML, JDBC, JavaScript, UML, HTML, JNDI, IBM Clear Case, Log4J, JUnit, IBM WAS 6.0, RAD 7.0, Oracle 9i, PLSQL, Log4j, Linux, Windows XP


Sr. Java Application Developer

  • Implemented new features like creating highly preferment, multi-threaded transforms to process incoming messages into trading object model using Java, Struts 1.2.
  • Conducted client side validations using JavaScript.
  • Coded JDBC calls in the servlets to access the Oracle database tables. Also invoked EJB 2.1 Stateless Session beans for business service implementation.
  • Used Spring Batch for reading, validating and writing the daily batch files into the database
  • Developed user management screens using JSF framework, business components using Spring framework and DAO classes using Hibernate framework for persistence management and involved in integrating the frameworks for the project.
  • Implemented J2EE design patterns such as Session Facade, Factory, DAO, DTO, and MVC.
  • Designed & Developed persistence service using Hibernate framework.
  • Configured and Integrated JSF, Spring and Hibernate frameworks.
  • Responsible for writing Java code to convert HTML files to PDF file using Apache FOP.
  • Involved in the performance tuning of PL/SQL statements.
  • Developed database triggers and procedures to update the real-time cash balances.
  • Worked closely with the testing team in creating new test cases and also created the use cases for the module before the testing phase.
  • Wrote ANT build scripts to compile Java classes and create jar, performed unit testing and package them into ear files.
  • Coordinated work with DB team, QA team, Business Analysts and Client Reps to complete the client requirements efficiently.

Environment: Java/J2EE, JMS, JNDI, JSP, JSF, My Faces, Spring, Tiles, Hibernate 3.0, HTML, DHTML, CSS, Web Sphere 5.1.2, Ant, ClearQuest, Oracle 9i, AJAX, JSTL, Eclipse, Junit, JavaScript, CSS.


Java Application Developer

  • Assisted in designing and programming for the system, which includes development of Process Flow Diagram, Entity Relationship Diagram, Data Flow Diagram and Database Design.
  • Involved in Transactions, login and Reporting modules, and customized report generation using Controllers, Testing and debugging the whole project for proper functionality and documenting modules developed.
  • Designed front end components using JSF.
  • Involved in developing Java APIs, which communicates with the Java Beans.
  • Implemented MVC architecture using Java, Custom and JSTL tag libraries.
  • Involved in development of POJO classes and writing Hibernate query language (HQL) queries.
  • Implemented MVC architecture and DAO design pattern for maximum abstraction of the application and code reusability.
  • Created Stored Procedures using SQL/PL-SQL for data modification.
  • Used XML, XSL for Data presentation, Report generation and customer feedback documents.
  • Used Java Beans to automate the generation of Dynamic Reports and for customer transactions.
  • Developed JUnit test cases for regression testing and integrated with ANT build.
  • Implemented Logging framework using Log4J.
  • Involved in code review and documentation review of technical artifacts.

Environment: J2EE/Java, JSP, Servlets, JSF, Hibernate, Spring, JavaBeans, XML, XSL, HTML, DHTML, JavaScript, CVS, JDBC, Log4J, Oracle 9i, IBM WebSphere Application Server

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