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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.

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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,