SUMMARY

• Over 7 + years of IT Experience with Informatica workflow, ETL, Oracle, Data Mapping, and Transformation and loading in a complex, high - volume environment, full cycle implementation experience as Techno-Functional Consultant.
• Expertise in Oracle, PL/SQL, UNIX Shell, QA testing and ETL tools. Extensive Application Development using Visual Basic, VBScript, UNIX shell scripting etc.
• Experience in using Informatica Client tools: Power Center Designer, Workflow Manager, Workflow Monitor, Repository Manager.
• Expertise in data modeling and OLAP for business analysis using Star & Snowflake schema modelling, Fact tables and Dimensional tables.
• Expert in designing Star Schema and well versed with UNIX shell wrappers, KSH and Oracle PL/SQL programming and stored procedures, functions, triggers and indexes.
• Involved in Performance Tuning of databases.
• Involved in High Level & Detail Design.
• Analysis on User Requirements and process flow.
• Experience in Creating Database Packages, Stored Procedures, functions, and triggers.
• Very strong in creating indexes, tuning SQL queries, and tuning indexes.
• Well versed with UNIX shell scripting with expertise in UNIX shell wrappers, KSH.
• Good programming knowledge in SQL, PL/SQL and stored procedures.
• Well versed with IMPORT/EXPORT/SQL * LOADER utilities, different kinds of joins and partition techniques of Oracle 10g/11g
• Developed SQL scripts and tuned the queries.
• Dimensional Data Modeling experience using Data modeling, Star Join Schema/Snowflake modeling, FACT & Dimensions tables, Physical & logical data modeling, ERWIN 3.5/3.x and Oracle Designer.
• Involved in providing production support to various Ab Initio ETL jobs and Oracle Database programs.
• Almost 2 years of experience in a dual role as Programming and Business Analyst.

TECHNICAL SKILLS

ETL: Informatica Power Center 9.1, 8.x, 7.x (Designer, Workflow Manager, Workflow Monitor, Repository Manager, Repository ServerOLAP: Business Objects Supervisor/Designer/BO 5.1.4/5.1.1 , Cognos

Databases: Teradata V2R4, Oracle 11g/10g/9i/8i/8/7.3, SQL Server 7.0, UDB DB2

Programming: SQL, PL/SQL, T-SQL, UNIX Shell Scripting, C, C++

GUI Tools: Developer 2000 (Forms 6i/5/4.5 & Reports 6i/3/2.5), SQL*Loader

Operating System: Windows NT 4.0, MS-DOS, Sun Solaris 8.0, HP-UX, OS/400

PROFESSIONAL EXPERIENCE

Confidential, Stamford, CT

IT/ SUPPORT ANALYST- SQL/ETL DEVELOPER

Responsibilities:

• Involved in complete understanding of business requirement and involved in analyzing the sources to load in Oracle warehouse.
• Interacting directly with client and business Users for understanding the issues and resolving the MR (Maintains Request) and SR (Services Request)
• Provides Support for Informatica implementation
• Provides Support for Informatica Cloud implementation
• Driving big offshore team
• Communicating between Businesses, various project team and application support team
• Responsible to manage Development, QA and Production environments and making sure that code is sync in all the three environments.
• Monitoring the loads (workflows) whether the loads are scheduled to respective timings
• Recovery or Re-start in loads in case of any failures.
• Identifying the tardiness in loading process in case of any sessions are in hung status
• Designed Sources to Targets mappings from SQL Server, Excel/Flat files to Oracle using Informatica Power Centre.
• Responsible for working with DBA and Data Modellers for project coordination.
• Responsible for Detail design of each interface.
• Responsible for developing complex Informatica mappings using different types of transformations like UNION transformation, Connected and Unconnected LOOKUP transformations, Router, Filter, Aggregator, Expression and Update strategy transformations for Large volumes of Data.
• Implemented slowly changing dimension Type 1 and Type 2 for Change data capture using Version control.
• Responsible for creating Workflows and sessions using Informatica workflow manager and monitor the workflow run and statistic properties on Informatica Workflow Monitor.
• Responsible for Defining Mapping parameters and variables and Session parameters according to the requirements and performance related issues.
• Created various tasks like Event wait, Event Raise and E-mail etc
• Created Shell scripts for Automating of Worklets, batch processes and Session schedule using PMCMD
• Tuning the Informatica mappings to increase the performance.
• Wrote test plans and executed it Confidential UNIT testing and also supported for system testing, volume testing and User testing. Also provided production support by monitoring the processes running daily
• Extracted Data from FACETS Database.

Environment: Informatica Power Center 9.1/8.6, Oracle 11g, Sybase, Mainframe, Erwin, Unix, Rapid SQL

Confidential, Herndon, VA

IT/ SUPPORT ANALYST- SQL/ETL DEVELOPER

Responsibilities:

• Involved in complete understanding of business requirement and involved in analyzing the sources to load in Oracle warehouse.
• Designed Sources to Targets mappings from SQL Server, Excel/Flat files to Oracle using Informatica Power Centre.
• Responsible for working with DBA and Data Modellers for project coordination.
• Responsible for Detail design of each interface.
• Responsible for developing complex Informatica mappings using different types of transformations like UNION transformation, Connected and Unconnected LOOKUP transformations, Router, Filter, Aggregator, Expression and Update strategy transformations for Large volumes of Data.
• Developed SDE mappings to load large amount of data from different sources to staging area, SID mappings for load the data from staging area to target system
• Implemented slowly changing dimension Type 1 and Type 2 for Change data capture using Version control.
• Responsible for creating Workflows and sessions using Informatica workflow manager and monitor the workflow run and statistic properties on Informatica Workflow Monitor.
• Responsible for Defining Mapping parameters and variables and Session parameters according to the requirements and performance related issues.
• Created various tasks like Event wait, Event Raise and E-mail etc
• Created Shell scripts for Automating of Worklets, batch processes and Session schedule using PMCMD
• Created various Oracle database SQL, PL/SQL objects like Indexes, stored procedures, views and functions for Data Import/Export. tuning the Informatica mappings to increase the performance.
• Wrote test plans and executed it Confidential UNIT testing and also supported for system testing, volume testing and User testing. Also provided production support by monitoring the processes running daily
• Extracted Data from FACETS Database.
• Worked on creating HIPAA files from SQL Server database.

Environment: Informatica Power Center 9.1/8.6, MS SQL server 2005, Oracle 10g, Data quality, Toad, PL/SQL (Stored Procedures, Triggers, Packages), Erwin, MS Visio, Windows XP

Confidential, Edison, NJ

ETL Analyst/ETL Developer

Responsibilities:

• Involved in Requirement Analysis, ETL Design and Development for extracting the data which is stored in different sources like Oracle, SQL Server, Sybase, and DB2.
• Analyzed, designed and developed an environment that would facilitate the use of Informatica to transform data coming from Igrasp oltp into Adim datamarts.
• Developed complex Informatica Mappings with transformations like lookup, router, aggregator, expression, update strategy, joiner and etc.
• Created Connected, Unconnected and Dynamic Lookup transformations for better performance.
• Created sessions, worklets, workflows for the mapping to run daily, biweekly based on the business requirements.
• Extensively used Parameter files, mapping variables in the process of development of the mappings for all the dimension tables.
• Implemented Slowly Changing Dimension type2 methodology in Informatica.
• Worked on handling performance issues of Informatica Mappings, evaluating current logic for tuning possibilities.
• Tuned SQL, PL/SQL Queries in Source qualifier Transformation for better performance.
• Created and executed unit test cases for various scenarios for all the mappings, workflows and scripts.
• Involved in unit testing and fixing the bugs identified, provided data to the reporting team for their daily, weekly and monthly reports.
• Worked on modification of UNIX shell scripts.
• Involved in team weekly and by monthly status meetings.

Environment: Informatica PowerCenter8.5, Oracle10g, Toad, SQL, PL/SQL (Stored Procedure, Trigger, Packages), Erwin, MS Visio, Windows 2000, UNIX.

Confidential

Informatica Developer

Responsibilities:

• Developed Logical and physical database designs for the transaction system.
• Extract the XML file from source transform it with multiple transformation including XML Transformation.
• Performance tuning on sources, targets, mappings and SQL queries in the transformations.
• Used PL/SQL Views, Triggers, Procedures and Functions.
• Designed and developed complex ETL mappings making use of transformations like Source
• Qualifier, Expression, Joiner, Update Strategy, Connected Lookup and unconnected Lookup, Rank, Router, Filter, Aggregator and Sequence Generator transformations.
• Created reusable transformations and mapplets based on the business rules to ease the development.
• Developed mappings to implement type 2 slowly changing dimensions.
• Developed and implemented the Unix shell script for the start and stop procedures of the sessions.
• Used various Informatica Error handling technique to debug failed session.
• Developed workflow tasks like reusable Email, Event wait, Timer, Command, Decision Used various debugging techniques to debug the mappings.
• Created Test cases for Unit Test, System Integration Test and UAT to check the data quality.
• Created Materialized view for summary data to improve the query performance.

Environment: PowerCenter8.1, Oracle9i, SQL Server 2000, SQL,PL/SQL, shell scripts, MS Visio, ERWIN Data Modeling tool, Toad 8.0, Windows 2000,XML,UNIX

Confidential, Cincinnati, OH

Informatica Developer

Responsibilities:

• Extensively used Informatica client tools - Source Analyzer, Warehouse designer, Mapping designer, Mapplet Designer, Transformation Developer.
• Developed complex mapping using Source qualifier, Aggregators, Connected & unconnected lookups, Filters & Update strategy.
• Used Lookup Transformation to access data from tables, which are not the source for mapping and also used Unconnected Lookup to improve performance
• Developed reusable Mapplets and Transformations.
• Good knowledge on fixed income Derivatives and foreign exchanges also.
• Responsible for transport the data to Target Warehouse Oracle tables on the server, Schedule, Run Extraction and Load process and Monitor sessions by using Informatica workflow manager and workflow monitor
• Create and Administer Repositories using Repository manager of Informatica.
• Worked on creating HIPAA files from SQL Server database.
• Also involved in moving the mappings from Test Repository to Production after duly testing all transformations.
• Calculated the Cache requirements for Lookup, Joiner and Aggregator transformations and increased the memory on Informatica server to avoid the paging to the disc.

Environment: Informatica Power Center 7.1, Oracle 9i, UNIX, Sybase, MS SQL Server 2004, Windows 2000