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7/28/2019 Saravanan Muthu
1/3
saravanan muthuETL Developer - Informatica
Chennai, Tamil Nadu - Email me on Indeed: indeed.com/r/saravanan-muthu/c74be719ed2100d7
More than 3+ years of ETL experience in software development, Database Design, administration andimplementation with vast experience in Data Warehousing, Business Intelligence.
Around 3 years of experience in Informatica and 1 year of experience in Abinitio ETL tools.
Worked with Informatica Mapping Designer, Workflow manager, Workflow monitor and transformation
developer and mapplets to define transformation process, runtime properties for mapping, monitor execution
of sessions.
Worked with Repository manager and metadata reporter for version control and Impact analysis for various
ETL end-to-end Projects.
Good knowledge in automating the complete life cycle of ODS and DSS Database, datamart instances using
Informatica.
Well hands on experience in Oracle 9i, 8i, 8.x and 7.x database and worked VLDB OLTP and OLAP
environment.
More than 2 years of experience in writing complex unix process to Automate OLAP ETL end-to-end process
and Performance tuning of high end servers.
Worked with writing complex wrapper scripts to automate ETL process using UNIX K-shell scripts.
Experience in designing the Logical and Physical Modeling for both Dimensional and E-R Model for both
OLAP and OLTP applications.
Expertise in performing data validation, cleansing, and data quality related issues using Informatica ETL tools
on UNIX environment.
Worked with Gap Analysis, Capacity planning and data validation process for Data migration and
enhancement projects
Worked on Database migration from Oracle to Teradata for VLDB data warehouse instances.
Worked for preventing performance crisis using Oracle performance monitoring and tuning techniques.
Provided 24x7 Production Support for ETL daily, weekly and monthly job schedule.
Excellent Communication skills and ability to think analytically and prosper either working individually or in
a team.
Worked with Oracle data warehouse and Data Mart OLAP Applications where it involves large-scale data
movement.
Worked with writing the complex query and tuning the SQL on both Oracle databases worked closely with
DBA to recommend any changes to Database setting.
Performed various level of testing for data validation, cleansing process to improve the data quality in hybrid
applications environment.
Worked closely with testing team to execute various test cases to improve the data quality and data validation.
WORK EXPERIENCE
ETL Developer - InformaticaFirstdata Corp - Omaha, NE - January 2010 to April 2013
Firstdata Corporation is the leading Credit card service provider. The Data Warehouse has three different data
sources DMS (Distributors Management System), ERS (Employee Repository system) . This DW provides
data of various distributors and resellers in US and worldwide, and employees information for decision making
reports.
http://www.indeed.com/r/saravanan-muthu/c74be719ed2100d7?sid=rex-download&kw=download-top&co=IN7/28/2019 Saravanan Muthu
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Responsibilities:
Responsible for replacing the existing legacy ETL processing with informatica ETL tools, worked closely
with Business Analysts and Powered users to implement new enhancement to Storage tech "One Warehouse
project".
* Designed and deployed the ETL process using Informatica for ODS and DSS instance by studying the
business requirement from the business users.
* Developed complex maps in normalizing the 3-D data in the Excel Spread Sheet into 2-D flat file. Later this
flat file was in to Oracle Data Marts.
* Responsible for cleansing the data from source systems using informatica components such as reformat
and filter by expression.
* Developed several partition based informatica maps for high volume data warehouse.
* Developed number of informatica maps based on business requirements using various Informatica
Transformations such as joiner, aggregator, source qualifier, router, update strategy, normalizer, lookup etc.
* configured informatica and setup the well tuned environment for Production, QA and development
environment. Involved in all phases of System Development Life Cycle Analysis, business modeling & Data
Modeling. Having experience in coordinating with offshore on development / maintenance projects.
* used the Informatica Repository manager to administrate the maps, files and datasets and examine the
dependencies among objects.
* Worked with both web based and command based script repository manager for ETL scripts migration. And
worked with monitoring and setup alert for ETL process.
* Involved in constructing conformed dimension, facts and aggregate tables using informatica jobs, worked
with implementing nearly real time updates.
* worked with performance tuning for complex database SQL to improve the performance of BI tools reports.
Environment: Informatica 8.6.x, Unix, Oracle9i/10g, ERWIN, Shell scripting, Windows NT/2000.
ETL Developer - AbinitioAmerican Express - Phoenix, AZ - January 2008 to September 2009
American express is one of the renowned financial institutions. It delivers various credit card products to serve
merchants and individuals. The card business was spread globally and has various branches in most of thecountries. The main datawarehouse unit is present in Phoenix which includes source to end development
processes like data profiling, data cleansing and data loading. The data warehouse has 5 different sources
CAS (card authorization system), ROC (record of charges), GRMS (Global risk management system), GNA
(Global Network acquisitions) . These data are present in form of reports to the users for making their decisions
based on DSS.
Responsibilities:
Working in an end to end environment such as pulling data from the mainframe, performing extraction,
transformation and loading and finally storing into the table.
* Performed data profiling for the new incoming data to the data repository.
* Configured abinitio software for VLDB data warehouse instance, and involved in setting up Sandbox, MFS
and Project frame work for development, testing and Production environment.* Implemented B2B Project (business to business) to improve US market productivity by calculating and
including exposure of international markets like Australia and New Zealand.
* Migrating the legacy airline charges mainframe feed to an abinitio ETL process which is cost effective, cost
savings of $50K/year plus elimination of maintenance effort.
* Worked in a Collection Strategy management information system project in which storing the everyday
cancelled accounts for the exposure calculation.
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* Participated in the System Development Life Cycle (SDLC) in all phases for Data warehouse and Data mart
application.
* Involved in configuration of DBC file to connect the ODS and DSS databases in order to load the data from
the heterogeneous database.
* Worked with debugging existing ETL process to enhance new functionality and improve the notification
process.
* Provided architecture to support the migration of databases from Oracle data marts to Teradata data
warehouse, as well as ETL framework to supply continuous engineering and manufacturing updates to the
data warehouse (Oracle, MQ Series, ODBC, HTTP and HTML)
* Created test plans for validating analysis results and extracted partial dataset from the Production data for
daily, weekly and monthly load test process.
* Worked closely with the testing team to perform various data validation, system test, Stress test or regression
tests process.
* Provided 24/7 production support on monthly and weekly basis.
Environment: Abinitio CO>OS 2.12, Abinitio GDE 1.14, Unix, Sybase IQ 12.6, UNIX shell Scripting, SQL
Advantage, Windows NT/2000.
EDUCATION
Master of Science in Computer ScienceIllinois institute of Technology
January 2005 to December 2007
Bachelor of Engineering in Computer ScienceMadurai Kamaraj University - Madurai, Tamil Nadu
June 1999 to June 2003
ADDITIONAL INFORMATION
Skills Summary
Languages: C, C++, SQL, PL/SQL, Transact SQL, UNIX Shell Scripting, Proc*C
Operating System: MS-DOS, UNIX (Sun Solaris, IBM Aix), And Windows 9x/2000/NT/Me/XP
Database: Oracle 9i/10g, Sybase IQ 12.6, DB2, SQL Server 7.0/2000, MS Access
ETL Tools: Informatica Power center 8.6.x, Abinitio CO>OS (2.12/2.11/2.10), Abinitio GDE (/1.14/1.13/1.12)
Reporting Tool: Oracle reports 2.5, Crystal Reports 7, Business Objects 5.1/4.x
Case Tools: SQL Advantage, ER-Win 3.5/4.0, SQL navigator, SQL assistant, Toad
Other Tools: Toad7.5, Developer 2000, Query man/SQL Assistant 6.1, Win Runner,