Rajesh Reddy

Sr. Tableau/Hadoop Developer

TOOLS/METHODS

Tableau (Dev & Admin), HDFS,

MapReduce, Pig, Hive, Impala,

HBase, MarkLogic, Sqoop, Oozie,

Zookeeper, Flume, Core Java,

Eclipse, NetBeans, COBOL, Java,

KSH & Markup Languages,

GreenplumDB, PostgreSQL,

MySQL, Oracle

8i/9i/10g/11g/11i/r12, DB2, IMS,

Putty, WINSCP, EDI(Gentran),

Streamweaver, Compuset

RELEVANT EXPERIENCE

9+ years of overall IT experience in a variety of industries, which

includes hands on experience in Big Data technologies, Reporting and

Data Visualization tools.

SKILLS INVENTORY

  § 3+ years of comprehensive experience in Tableau (Dev & Admin)

and Big Data/Hadoop which includes MR (Mapreduce), PIG, HIVE,

Impala, Oozie, Flume, Zookeeper, NoSQL DB’s such as Hbase and

exposure to MarkLogic

  § Hands on experience working on Tableau Suite (8.x/7.x)( Desktop,

Server, Reader, Online, Public)

  § Experience in designing stunning

  § Experience

in Installation,

visualizations

using tableau software and publishing and presenting dashboards

on web and desktop platforms

Configuration

and

administration of Tableau Server in a multi-server and multitier

environment.

CLIENTS

GE Oil & Gas

REI Systems

Nationwide Insurance

Capital one

Wachovia Bank

Ingram Micro

ABN-AMRO

  § Designed and deployed reports with Drill Down, Drill Through and

Drop down menu option and Parameterized and Linked reports.

  § Very good understanding of Hadoop ecosystems like Sqoop2,

Spark and YARN.

  § Experience in Data Analysis, Data Validation, Data Verification,

Data Cleansing, Data Completeness and identifying data

mismatch.

  § Experience in working with MR, PIG scripts & HIVE query Language.

  § Experience in importing and exporting data using Sqoop from

HDFS to Relational Database Systems and vice-versa and

exposure to HVR and CDC

  § In depth understanding/knowledge of Hadoop Architecture and

various components such as HDFS, Job Tracker, Task Tracker,

Name Node, Data Node and MapReduce concepts

EDUCATION

Bachelor of Engineering, VIT,

India

  § Experience in analyzing data using Hive QL, Pig Latin, and custom

MapReduce programs in Java.

  § Extensive experience with SQL, PL/SQL, PostgreSQL and database

concepts

  § Knowledge of NoSQL databases such as HBase and Casandra

  § Knowledge of job workflow scheduling and monitoring tools like

Oozie and Zookeeper

  § An individual with excellent interpersonal and communication

skills, strong business acumen, creative problem solving skills,

technical competency, team-player spirit, and leadership skills

Rajesh Reddy

Sr. Tableau/Hadoop Developer

PROJECTS

GE Oil & Gas, Houston, TX

Role: Sr. Tableau/Hadoop Developer

GE oil and gas provides drilling equipment and subsea systems, to turbomachinery solutions and

downstream processing. IT sourcing has 23 different oracle SAP, Oracle DB and Flat File systems

which shall be combined into one huge Greenplum Cluster

Responsibilities:

  · Build front end Dashboards with stunning visualizations in Tableau for spend, supplier, P&L,

year to month analysis etc. based out of Oracle, Greenplum DB’s with Drill Down, Drill Through

and Drop down menu options with Parameters and hyperlinking reports.

  · Create views, dashboards in Tableau Desktop and published to Tableau Server for performing

analytics and customization using filters and actions for Business users and internal team.

  · Collaborate with Business users for requirement gathering for building Tableau reports as per

business needs.

Oct 2014 to Present

  · Creation of detailed reports (hyperlink with filters) for business users who work closely with

suppliers for first-hand information.

  · Responsible for providing demo to clients on regular basis and help business users on how to

navigate through Tableau dashboards.

  · Evaluate data connections for live connection or data extracts based on factors such as data

size, real-time reporting.

  · Handled Tableau admin activities such as site creation, adding site admins, users, schedules &

subscriptions, server maintenance, connectivity, backup etc.

  · Load, Clean, Enrich data in Greenplum DB using PIG

  · Responsible for preparing technical specifications, analyzing functional Specs, development

and maintenance of code.

  · Design and development of SQL/PostgreSQL queries/procedures for creation of data extracts

for PO/Receipt/Invoice spends

  · Use in depth features of Tableau like Data Blending from multiple data sources to attain better

data analysis.

  · Handled installation of additional worker nodes when data increase was anticipated.

  · Handle Informatica integration between warehouse and other teams for clean-up and

enrichment of data.

Environment: Tableau Desktop 8.1, Tableau Server 8.1, Oracle (11i & r12), Greenplum, HDFS,

Pig, Informatica, Talend

REI Systems, Sterling, VA

Role: Sr. Hadoop/Tableau Developer

REI works with different government sectors in the space of decision and data analytics, Dashboards,

business process etc.

Apr 2013 to Oct 2014

Rajesh Reddy

Sr. Tableau/Hadoop Developer

Responsibilities:

  · Worked with the Data Science team to gather requirements for various data mining projects

  · Distributing the work between team members and tracking the development progress.

  · Interaction with client regarding the progress of the project on regular basis.

  · Responsible for development of Pig (involving UDF’s) scripts & Map-Reduce programs for data

cleansing and application of business logic.

  · Involved in running Hadoop jobs for processing millions of records of text data.

  · Developed Simple to complex MapReduce Jobs using Pig and Hive

  · Developed chained MapReduce jobs in java for data cleaning and preprocessing

  · Strong understanding on MRV1 and MRV2 execution environments for MapReduce Jobs in

Hadoop.

  · Involved in the development of the Hive/Impala scripts for extraction, transformation and

loading of data into other data warehouses.

  · Involved in loading data from LINUX file system to HDFS

  · Responsible for managing data from multiple sources

  · Extracted files from Oracle through Sqoop and placed in HDFS.

  · Experienced in running Hadoop streaming jobs to process terabytes of xml format data.

  · Created views in Tableau Desktop that were published to internal team for review and further

data analysis and customization using filters and actions.

  · Upgradation of tableau server 7.0 to 8.1 on development, stage and production environments.

  · Handled admin activities such as site creation, adding site admins, users, schedules &

subscriptions, server maintenance, connectivity, backup etc.

  · Used Hue UI for viewing output of Hive queries.

  · Collection of Hadoop workflow jobs with several actions arranged in a control dependency

using Oozie.

  · Up gradation of tableau server 8.1 to 8.2 on development, stage and production environments

in a phased manner.

  · Created and maintained Technical documentation for launching HADOOP Clusters and for

executing Pig Scripts and Hive queries

  · Responsible for providing demo to client on regular basis Responsible for preparing technical

specifications, analyzing functional Specs, development and maintenance of code.

Environment: CDH4 (MRV1 and MRV2), HDFS, Pig, Hive, Impala, MapReduce, Sqoop, LINUX,

Hue, Tableau Desktop, Tableau Server

Nationwide Insurance Company, Columbus, OH

Role: Hadoop Developer

Feb 2012 to Apr 2013

Nationwide Mutual Insurance Company is a leading provider for Insurance and Financial services in

USA. Nationwide Mutual Insurance Company offers diverse and comprehensive products and

services that provide a strong and stable option for customers.

Responsibilities:

  · Worked on Hadoop cluster scaling from 4 nodes in development environment to 8 nodes in

pre-production stage and up to 24 nodes in production.

Rajesh Reddy

Sr. Tableau/Hadoop Developer

  · Involved in complete Implementation lifecycle, specialized in writing custom MapReduce, Pig

and Hive programs.

  · Exported the analyzed data to the relational databases using Sqoop for visualization and to

generate reports for the BI team.

  · Extensively used Hive/HQL or Hive queries to query or search for a particular string in Hive

tables in HDFS.

  · Did various performance optimizations like using distributed cache for small datasets, Partition,

Bucketing in hive and Map Side joins.

  · Experience in developing customized UDF's in java to extend Hive and Pig Latin functionality.

  · Created HBase tables to store various data formats of data coming from different portfolios.

  · Managing and scheduling Jobs to remove the duplicate log data files in HDFS using Oozie.

  · Used Flume extensively in gathering and moving log data files from Application Servers to a

central location in Hadoop Distributed File System (HDFS).

  · Implemented test scripts to support test driven development and continuous integration.

  · Responsible to manage data coming from different sources.

  · Experienced in Analyzing Cassandra database and compare it with other open-source NoSQL

databases to find which one of them better suites the current requirements.

  · Used File System check (FSCK) to check the health of files in HDFS.

  · Involved in creating dashboards by extracting data from different sources.

  · Created dashboard using parameters, sets, groups and calculations.

  · Involved in creating interactive dashboard and applied actions (filter, highlight and URL) to

dashboard.

  · Involved in creating calculated fields, mapping and hierarchies.

  · Created drill through reports in dashboard.

  · Developed the UNIX shell scripts for creating the reports from Hive data.

  · Experienced on loading and transforming of large sets of structured, semi structured and

unstructured data.

  · Analyzed large amounts of data sets to determine optimal way to aggregate and report on it.

Environment: Hadoop, Java, UNIX, HDFS, Pig, Hive, MapReduce, Sqoop, NoSQL DB’s,

Cassandra, Hbase, LINUX, Flume, Oozie, Tableau Desktop

Capital One, Richmond, VA

UNIX, Composite, Hadoop Developer

Enterprise Fulfillment IT is a generation 2.5 platform sourcing engagement leveraging state-of-theart

document automation, batch processing and monitoring systems to serve the credit cards, bank

and mortgage portfolios of Old National Bank. It is a massive engine to process millions of events to

generate letters, statements, checks and other outgoing communication while also receiving checks,

remits, online and other forms of payment from customers. Built on UNIX AIX and mainframes, the

project includes aggregation, reconciliation and vendor interaction as well.

Responsibilities:

  · Implemented 60+ minor enhancements in the period covering customer management,

recoveries, fulfillment management, customer acquisitions, rewards, high yield accounts,

Oct 2009 to Feb 2012

Rajesh Reddy

Sr. Tableau/Hadoop Developer

money market accounts. Changes including creation of new communication methods not

limited to letters, statements and checks.

  · Represented platform in work identification, scoping, allocation and prioritization meetings

with business users, application owners, architects including VPs.

  · Identified several new business streams for the application including online presentation of

certain instruments, simplified handling of change requests, simplified content changes etc.

  · Built the application for the use of 40+ users from scratch identifying user requirements,

technology requirements, functional and non-functional specifications. Offer presentation was

handled using manual updates previously.

  · Identified application performance parameters using industry standard tools and documented

them for future applications built in the same space.

  · Automated all business processes related to message processing viz. offer submission, offer

review, artwork upload, text submission, rules coding, offer approval and final database

  · Identified as a major contributor to Customer Acquisitions for work in letters processing.

Worked extensively on Visual Compuset. Built several reusable styles for different needs.

  · Interacted with 4 external vendors to set up file transfer and reports. Setup new interfaces for

the application internally and externally. Worked in different transfer protocols including FTP,

SFTP and Connect Direct.

  · Acted as the enhancements lead managing 5 resources with work done in both waterfall and

periodically in Agile.

  · Loading of data into HDFS, processing of data using PIG scripts and loading of data into Hive.

Environment: UNIX (AIX), KSH, Compuset, Java, HDFS, PIG, Hive

Wachovia Bank (Now Wells Fargo), Hyderabad, India

COBOL and DB2 Developer

Sept 2008 – Oct 2009

Involves in handling of ACH payments gateway for Wachovia Bank. Project involves existing code

enhancements to support high volume of child payments.

Responsibilities:

  · Implementation of convenience check and ACH origination programs for payment processing.

  · Resolution of file formatting issues facilitating ACH origination.

  · Initiation of specifically formatted ACH addenda records to process high volume of child

support payments.

  · Developed materials in support of operations training relative to check processing, ACH

Environment: IBM Mainframe OS/390, COBOL, DB2

  · Delivered on request by client for rapid implementation adding high volume processing to ACH

origination process.

Rajesh Reddy

Sr. Tableau/Hadoop Developer

Ingram Micro, Bangalore, India

EDI Specialist

Dec 2006 – Aug 2008

Project involves maintaining and developing EDI Applications (Electronic Data Interchange) that are

continuously requested by internal business units within Ingram. Ingram Micro uses EDI for majority

of business communication with the customers. So EDI Applications form the critical part of the

Ingram IT system. Responsibilities include mostly production support activities, providing solutions to

business user/trading partner queries (Severity 3 and 4) and also mainframe job failures (Severity 1

and 2). The Execution methodology includes Trading Partner Communication, Trading Partner Profile

Setup in Gentran (Mapping).

Responsibilities:

  · New EDI implementations for EDI X12 documents such as (850, 855. 810, 856 etc), test case

Execution, Build deployment, Post production. Enhancing existing EDI documents based on

customer requirements.

  · Worked on JCL and COBOL component enhancements related to EDI implementations.

  · Support to Business, Customer representatives EDI related queries.

  · Worked on tickets and job failures raised by business users and clients. Responsible to find the

root cause and resolution for severity 3 and 4 problems. Most of the fixes include COBOL, IMS

and DB2 programs, JCL changes.

  · Performed Regression testing for purchase order program processing. This process makes sure

that changes to PO processing are not affected since it was considered very important to

business.

Environment: IBM Mainframe OS/390, COBOL, DB2 (Platinum, Inter-test etc), IMS, EDI Gentran

ABN-AMRO, Pune, India

Test Engineer

Oct 2005 – Nov 2006

The project is a Testing of the application built by TCS for ABN-AMRO Bank. The Knowledge transition

was done in 3 waves each wave consisting of different number of applications. Black box testing was

done on a front end system named HAAI. The screen flow of the system was tested with help of test

cases.

Responsibilities:

  · Understanding the business Requirements and Technical Requirements.

  · Preparing the Test Cases according to the requirements.

  · Test Cases were implemented.

Environment: Test Director