The document provides details of 6 projects undertaken by Lekkala Sekhar as an ETL developer and Datastage and Teradata expert. The projects involved designing and developing ETL processes to extract, transform and load data from various source systems like flat files, Oracle and Teradata databases into target data warehouses. Technologies used include Datastage 7.5, 8.0, 8.5, 9.1 and 11.3 and Teradata V2R5, 12, 13 and 14.10. Responsibilities included requirement gathering, documentation, job development, testing, performance tuning and support.

1. LEKKALA SEKHARLEKKALA SEKHAR
TERADATA & DATASTAGE DEVELOPERTERADATA & DATASTAGE DEVELOPER
Email: Sekhar0423@gmail.com
Mobile: +91 76196 10744
Skills:
ETL Tools
Database
Languages
Data Warehousing
Platforms
Remote access
DataStage 7.5/7.5.1/8.0.1/9.1/11.3.
Teradata V2R5/12/13/14.10, Oracle 9i, SQL server
SQL, C, C#, ASP.
Ascential DataStage
Windows 98/NT/2000/ 2003, UNIX.
Citrix Metaframe, Remote Desktop, AT&T Client
Professional Summary:
• A competent IT professional with 8+ years of experience in the industry.
• Possess good working knowledge in Datastage ETL Design, Build and Testing.
• 6+ Years Hands on experience on Data Stage 11.3/9.1/8.7/8.5/8.1/7.5 Server as well as Parallel jobs.
• Used and having knowledge on various stage like Data stage 8.1/8.5/8.7 Parallel jobs.
• Knowledge on various partition Techniques
• Hands on Performance Tuning in ETL Jobs.
• Used Data stage Director to run, monitor.
• Good knowledge on Data Warehouse concepts like Slowly Changing Dimension phenomenon, Star
Schema, Snow Flake and Dimension tables in implementing Decision Support Systems.
• Knowledge of loading and maintaining Data Warehouses and Data marts using Data Stage ETL
processes.
• I have around 3.2 years of experience in design, development and support of Teradata projects.
Proven success in managing Teradata utilities (BTEQ, MLOAD, FLOAD, FEXPORT).
• Reviewing components that are to be delivered to the client.
• Interacting with the client and the onsite coordinator for issues and queries in the project.
• Key player in knowledge transfer sessions to the testing team.
• Gained knowledge working in the UNIX Operating System and shell scripting.
• Excellent customer facing skills.
• Good understanding of Retail and Automotive domain.
• Proven ability to quickly learn and apply new technologies and have creativity, innovation, and ability
to work in a paced environment.
• Ability to handle projects individually.
• Highly result oriented and driven for success.
Employment Experience:
Capgemini Mar 2011 – Till date
DataStage 7.5/8.0.1/8.5(Server/Parallel) & Teradata 13.10
Packetware India Pvt Ltd. Jun 2007 - Jul 2010
DataStage 7.5/8.0.1 & Teradata V2R5
Education:

2. Master of Computer Application 2004 - 2007
Sri Venkateswara University
Training/Certification:
Training Attended - Datastage V.7.5.2 and Teradata
Certifications - IBM Web Sphere Data Stage V.8.0.1 and V.9.1
Project Details:-
#1
Project: Home Shopping Network(HSN) Jan 2015 – Till Date
Client: HSN
Project type: Development
Role: Technical Lead
Description:
Home Shopping Network (HSN) is an American broadcast, basic cable and satellite television
network.
The business needed visibility to the assortment of items on their web site for analytical purposes. For
example, when analyzing off-air sales they seek to understand if off-air sales (halo or pure) are driven by
assortment. Furthermore, they need to understand the role of assortment and specific skus in driving traffic
vs. sales.
The solution for this would be to capture the active and inactive items from the view exposed by the
source.
• ETL Understanding requirements.
• Responsible for Offshore deliverables.
• Preparation of ETL specifications based on Functional Documents.
• Preparation of Mapping Document based on the Jobs.
• Involved in Extraction XML, Json data through web services using hierarchical Data stage to parse,
compose, and transform XML
• Involved in Extraction, Transformation and Loading of the data from different data source like Flat files
and oracle to the Data warehouse as netezza.
• Preparing Unit Test Plan and Unit Test Cases documents according to the code which meets
business requirement.
• Understand the business and development process and facilitate appropriate data and development
solutions.
• Utilized Ascential DataStage to move data from source systems to target system.
• Implemented a peer review on the business specifications that were created by the Business Analyst.
• Developed several ETL specifications documents (Programmer level specifications) and also
developed jobs using DataStage and other tools.
• Developed a DataStage job to load data from a flat file
• Tuned of SQL queries for better performance for processing business logic in the database.
• Used various stages in Data Stage Parallel jobs like transformer, Join, Lookup, Funnel, Dataset,
Change Capture, Filter, Sort etc..
• Preparing the Unit Test Cases and testing all the scenarios.
• I was responsible for conducting team meetings, Peer Review, Development and environment setup.
Environment & Data Warehousing Tools:
• Datastage 9.1/11.3
• Netezza
• Using Windows 2007.

3. #2
Project: Tenneco Sales and Marketing Mar 2011 – Jan 2015
Client: Tenneco
Project type: Development and support
Role: Analyst
Description:
Illinois-based Tenneco Inc., one of the world's largest designers, manufacturers and marketers of
Emission control and Ride control products and systems for the global automotive original equipment market
and the aftermarket, to provide a range of applications management and development services.
AMDW application is data warehouse which generates daily, weekly and monthly reports which is used by
After Market sales people for North America region along with Canada and Mexico.
• ETL Understanding requirements.
• Working with different source systems like Lotus Notes, Cullinet, Teradata.
• Involved in constructing the Store Procedures.
• Designing ETL jobs using Datastage for loading data into CRDM and Performance Tuning.
• Used various stages in Data Stage Parallel jobs like transformer, Join, Lookup, Funnel, Dataset,
Change Capture, Filter, Sort etc..
• Created a set of generic jobs for preprocessing which involves update, unload and delete activities to
be run for each batch process and these are used across different modules.
• Preparing the Unit Test Cases and testing all the scenarios.
• I was responsible for conducting team meetings, Peer Review, Development and environment setup.
• Working with Ticketing System (Unicenter).
• Load the user requested data manually using KSH scripts in XShell.
• Unix Shell Scripting for data loading and automation process.
• Analysis, solving and validation of data issues and support of the same.
• Excellent Client interaction.
Environment & Data Warehousing Tools:
• Datastage 8.0.1
• Teradata 13 & 13.10
• Cognos.
• Using Windows 2007.
#3
Project: CARS-PHASE 1 Jul 2010 – Dec 2010
Client: Target Corporation India Pvt Ltd
Project type: Development and Maintenance
Role: ETL Developer
Description:
Campaign Adhoc Reporting Solutions (CARS) provides solution to support standard and customized
reporting across campaigns for the various marketing channels like direct, receipt and email. It helps to
analyze and conclude on the increase in sales along various marketing channels by promoting and providing
coupons to guests and analyzing the behavior of them in redeeming the coupon during various periods
through the consistent report definitions of metrics.
• Analyzed Functional requirements and involved in the preparation of functional Specification document.
• Involved in the preparation of test case document. Performed unit and system testing in the dev
environment. Maintain the Defect Log in spread sheet.
• Extensively used Essential DataStage to develop Jobs for extracting, transforming, loading data into Data
warehouse table.
• Used DataStage Director to run and monitor the DataStage jobs.
• Used Job Control and Job Sequencer to run the jobs by using parameters.

4. • Extracted data from sequential file and loaded into staging area
• Worked on DataStage – DataStage Designer, DataStage Director and DataStage Administrator. Involved
in the development of DataStage jobs.
• Schedule and Run the jobs through CONTROL –M in test and prod Environments.
Environment & Data Warehousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 8.0.1
• Worked on DB2 8.1, Teradata V2R5 Databases.
• Using Windows XP, Unix.
#4
Project: Sales Data Mart May 2009 – Jun 2010
Client: Nordstrom, Inc, USA
Role: ETL Developer
Description:
Nordstrom, Inc. is an upscale department store chain in the United States. This project deals with
the distribution of historical sales, financial and marketing data to brokers, customers and financial centers
on daily basis. The end users for analyzing the sales of the Nordstrom Company use the Data Mart. This
information is being used by a group of business analysts and senior managerial personnel. DataStage was
used as an ETL tool for extracting the Data from various sources running on Teradata, MS SQL Server
databases and load into Teradata Data Warehouse.
Responsibilities:
• Understanding the requirement specifications.
• Extracted data from sequential file and loaded into staging area using mload scripts in teradata.
• Extensively used Essential DataStage to develop Jobs for extracting, transforming, loading data into Data
warehouse table.
• Used DataStage Director to run and monitor the DataStage jobs.
• Used Job Sequencer to run the jobs by using parameters.
• Tuned DataStage jobs to obtain better performance.
• Extracted data from sequential file and loaded into staging area
• Used most of the stages such as the Transformer, Sequential File, Aggregator.
Environment & Data Warehousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 8.0.1
• Worked on Teradata V2R5 Database.
• Using Windows 2000
#5
Project: Rabobank, Netherlands. Oct 2008 - Apr 2009
Role: ETL Developer
Description:
Rabobank serves more than 9 million private individuals and corporate clients in the Netherlands
and a growing number abroad. This project involves development of compensation system which facilitates
Bank of America to capture different affinity artners, payment parameters, different business rules, payment
methods, payment details. This application (affinity compensation system) helps bank to maintain
compensation more effectively.
Responsibilities:
• Understanding the business functionality & Analysis of business requirements.
• Involved in the preparation of the Detailed Design documents.

5. • Review of the documents and ensure its prompt delivery to the Business for approval.
• Developed parallel jobs with collection of all source stages, target stages and processing stages like
Aggregator, Transformer, look-up, join etc.
• Viewing Log for the jobs and cleaning up the resources using Director.
• Running and monitor the jobs in Director.
• Used most of the stages such as the Transformer, Datasets, Sequential File, Aggregator, Peek, Funnel..
Environment & DataWareHousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 7.5
• Worked on Teradata V2R5 Database.
• Using Windows XP, Unix
#6
Project: Master Card Claims Processing System Aug 2007 – Oct 2008
Client: Cambridge Integrated Services Group Inc.
Role: ETL Trainee/Developer
Description:
This project deals with claims processing systems at Cambridge Integrated Services. It
serves as a single source for virtually every need and assists in delivering the bottom line results the clients
need. The Systems used DataStage and Oracle9i as the data ware tools. Span developed ETL modules that
extracted data from the OLTP database and transferred them as necessary before loading to the data
warehouse. DataStage tool is used to model and create the target warehouse, extract data from multiple
data sources, transform the data to make it accessible to business analysis and for loading multiple target
data marts.
Responsibilities:
• Using DataStage ETL Tool: Designer, we designed data source, transformations, target tables and
imported metadata definitions for the data warehouse.
• Worked on DataStage – DataStage Designer, DataStage Director, and DataStage Administrator. Involved
in the development of DataStage jobs.
• Worked on different client tools Source Analyzer, Warehouse designer, Mapping and Transformation
Developer.
• Created Mappings using transformations like Aggregator, joiner, expression and sequence generator to
load map into the target tables of data warehouse.
• Implemented slowly changing strategy to manage the data in the dimension tables.
Environment & DataWareHousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 7.5
• Worked on Teradata V2R5 Database.
• Using Windows 2000

6. • Review of the documents and ensure its prompt delivery to the Business for approval.
• Developed parallel jobs with collection of all source stages, target stages and processing stages like
Aggregator, Transformer, look-up, join etc.
• Viewing Log for the jobs and cleaning up the resources using Director.
• Running and monitor the jobs in Director.
• Used most of the stages such as the Transformer, Datasets, Sequential File, Aggregator, Peek, Funnel..
Environment & DataWareHousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 7.5
• Worked on Teradata V2R5 Database.
• Using Windows XP, Unix
#6
Project: Master Card Claims Processing System Aug 2007 – Oct 2008
Client: Cambridge Integrated Services Group Inc.
Role: ETL Trainee/Developer
Description:
This project deals with claims processing systems at Cambridge Integrated Services. It
serves as a single source for virtually every need and assists in delivering the bottom line results the clients
need. The Systems used DataStage and Oracle9i as the data ware tools. Span developed ETL modules that
extracted data from the OLTP database and transferred them as necessary before loading to the data
warehouse. DataStage tool is used to model and create the target warehouse, extract data from multiple
data sources, transform the data to make it accessible to business analysis and for loading multiple target
data marts.
Responsibilities:
• Using DataStage ETL Tool: Designer, we designed data source, transformations, target tables and
imported metadata definitions for the data warehouse.
• Worked on DataStage – DataStage Designer, DataStage Director, and DataStage Administrator. Involved
in the development of DataStage jobs.
• Worked on different client tools Source Analyzer, Warehouse designer, Mapping and Transformation
Developer.
• Created Mappings using transformations like Aggregator, joiner, expression and sequence generator to
load map into the target tables of data warehouse.
• Implemented slowly changing strategy to manage the data in the dimension tables.
Environment & DataWareHousing Tools:
• Worked on Data Warehousing Tools such as IBM Ascential DataStage 7.5
• Worked on Teradata V2R5 Database.
• Using Windows 2000