PROFESSIONAL SUMMARY:

• Over 7+ year’s Extensive experience in using ETL methodologies for supporting Data Extraction, Data Migration, Data Transformation and developing Master Data using Informatica Power Center/IDQ.
• Created mappings in mapping Designer to load data from various sources using transformations like Transaction Control, Lookup (Connected and Un - connected), Router, Filter, Expression, Aggregator, Joiner and Update Strategy, SQL, Stored Procedure and more.
• Extensively worked with Teradata utilities like BTEQ, Fast Export, Fast Load, Multi Load to export and load data to/from different source systems including flat files.
• Hands on experience using query tools like TOAD, SQL Developer, PLSQL developer, Teradata SQL Assistant and Query man.
• Experience in handling initial/full and incremental loads.
• Expertise in writing large/complex queries using SQL.
• Worked on Informatica Data Quality 9.1(IDQ) tool kit and performed data profiling, cleansing and matching and imported data quality files as reference tables.
• Excellent Knowledge on Slowly Changing Dimensions (SCD Type1, SCD Type 2, SCD Type 3), Change Data Capture, Dimensional Data Modeling, Ralph Kimball Approach, Star/Snowflake Modeling, Data Marts, OLAP and FACT and Dimensions tables, Physical and Logical data modeling.
• Involved in the Analysis, Design, Development, Testing and Implementation of business application systems for Health care, Pharmaceutical, Financial, Telecom and Manufacturing Sectors.
• Excellent in designing ETL procedures and strategies to extract data from different heterogeneous source systems like oracle 11g/10g, SQL Server 2008/2005, DB2 10, Flat files, XML, SAP R/3 etc.
• Solid relationship databases knowledge, database programming and development working experience in multiple databases including Oracle, DB2 UDB, SQL Server, Teradata. And UNIX/LINUX, Windows operating systems, plus strong skills in shell scripting in UNIX/LINUX, and batch file scripting in Windows.
• Extensive ETL experience using Informatica Power Center (Designer, Workflow Manager, Workflow Monitor and Server Manager) Teradata and Business Objects.
• Experience in designing and Developing Complex Mappings using Informatica Power Center with Transformations such as Lookup, Filter, Expression, Router, Joiner, Update Strategy, Aggregator, XML generator, XML parser, Stored Procedure, Sorter and Sequence Generator.
• Created database materialized views to consume data from different source using DB Links.
• Working experience using Informatica Workflow Manager to create Sessions, Batches and schedule workflows and Worklets, Re-usable Tasks, Monitoring Sessions.
• Load and Extract from multiple cloud applications and Legacy applications.
• Experience in debugging mappings, identified bugs in existing mappings by analyzing the data flow and evaluating transformations.
• Experienced in Performance tuning of Informatica and tuning the SQL queries.
• Good knowledge on data quality measurement using IDQ and IDE.
• Proficient with Informatica Data Quality (IDQ) for cleanup and massaging at staging area.
• Performed the data profiling and analysis making use of Informatica Data Explorer (IDE) and Informatica Data Quality (IDQ).
• Designed and Developed IDQ mappings for address validation / cleansing, doctor master data matching, data conversion, exception handling, and report exception data.
• Use Incremental loading method to load the source system data into BW.
• DB2 BMC Tools for Unload/Reload/ Reorg, Performance Monitoring.
• Handle the error handling process to capture the reject rows.
• Develop the test cases and performed the unit testing, integration testing etc. for the data quality.
• Worked on lookup file for material attribute and vendor attribute for proper categorization of data.
• Specialized in very large amount data migration and conversion, databases conversion, operating system conversion, and ETL tool migrations Including repository database migration and conversion.
• Performed extensive raw data analysis, cleansing, and staging.
• Performed end to end Data validation to maintain accuracy of data sets.
• Provided ad-hoc data analysis and support to business functions.
• Expertise in scheduling workflows Windows scheduler, Unix and scheduling tools like CRTL-M & Autosys.
• Worked with Business Managers, Analysts, Development, and end users to correlate Business Logic and Specifications for ETL Development.
• Experience in support and knowledge transfer to the production team.
• Excellent Verbal and Written Communication Skills. Have proven to be highly effective in interfacing across business and technical groups.

TECHNICAL EXPERTISE:

ETL Tools: Informatica Power Center 10.x/9.5.x/9.1/8.6.x/8.5. x., Informatica Power Exchange 9.x, Informatica Data Quality (IDQ), SSIS.

Data Modeling: Star Schema, Snowflake Schema, Erwin 4.0, Dimension Data Modeling.

Databases: Oracle11g/10g/9i, SQL Server2008/2005, TOAD, Teradata 13.1/V2R5, V2R6, Sybase, MS Access, DB2.

Scheduling Tools: Control-M, CA7 Schedule, Autosys, Informatica Scheduler.

Reporting Tools: Crystal Reports, OBIEE 11g R1 (11.1.5).

Programming: SQL, PL/SQL, Transact SQL, HTML, XML, C, C++, Korn Shell, Bash.

Operating Systems: Windows 7/XP/NT/95/98/2000, DOS, UNIX and LINUX

Other Tools: SQL*Plus, Toad, SQL Navigator, Putty, MS-Office, SQL Developer.

PROFESSIONAL EXPERIENCE:

Confidential, St. Louis, MO

ETL Informatica Developer

Responsibilities:

• Involved in requirements gathering and analysis for the entire application.
• Analyzed the functional specs provided by the data architect and created technical specs documents for all the mappings.
• Developed logical and physical data models that capture current state/future state data elements and data flows.
• Working on Informatica Power Center 8.6 for design and development.
• Used various transformations like Source Qualifier, Aggregators, lookups, Filters, Sequence Generators, Routers, Update strategy, Expression and Sorter etc.
• Extensively working on Informatica Designer, Workflow Manager and workflow Monitor.
• Working on Source Analyzer, Target designer, Mapping Designer & Mapplet Designer.
• Created mappings in Mapping Designer and reusable transformations in Transformation Developer.
• Extracted Data from Different Sources by using Informatica.
• Created mappings using slowly changing dimension Types.
• Involved in performance tuning of Sources, mappings, sessions and targets.
• Developed mappings using Informatica Power Center Designer to load data from various source systems to target database.
• Prepared the Unit Test Cases and executed them.
• Designed Logical and Physical Database (Star Schema) using Reverse Engineering principle with Erwin 4.0 Tool.
• Extensively used Informatica client tools Source Analyzer, Warehouse designer, Mapping designer, Mapplet Designer, Transformations.
• Cleanse the source data, Standardize the Vendors address, Extract and Transform data with business rules, and built Mapplets using Informatica Designer.
• Designed and developed complex Aggregate, expression, filter, join, Router, Lookup and Update transformation rules.
• Worked on Power Center Designer client tools like Source Analyzer, Warehouse Designer, Mapping Designer and Mapplet Designer.

Environment: Informatica Power Center 8.6, Workflow Manager, Windows XP, Erwin4.0, Oracle 10g, SQL server 2008, XML, Flat Files, Quality Center

Confidential, Houston, TX

Sr. Informatica ETL/MDM Developer

Responsibilities:

• Assisted Business Analyst with drafting the requirements, implementing design and development of various components of ETL for various applications.
• Developed Metrics, Filters, Prompts to achieve the functionality of the canned reports and created advanced objects like Derived Metrics, Compound Metrics.
• Worked closely with ETL Architect and QC team for finalizing ETL Specification document and test scenarios.
• Design, develop, test and review & optimize Informatica MDM and Informatica IDD Applications.
• Involved in match/merge and match rules to check the effectiveness of MDM process on data.
• Developed business rules for cleansing/validating/standardization of data.
• Developed User Exits for implementing custom business rules.
• Defined System Trust and Validation rules for the base object columns.
• Developed MDM Hub Match and Merge rule’s Batch jobs and Batch groups.
• Imported Mappings and rules into power center for scheduling using Tidal.
• Extracted data from oracle database and spreadsheets, CSV files and staged into a single place and applied business logic to load them in the central oracle database.
• Designed and developed Informatica Mappings and Sessions based on user requirements and business rules to load data from source flat files and RDBMS tables to target tables.
• Worked in implementation of Profiling, Score Card, Classifier models, Probabilistic models, Human task and Exception record management as part of IDQ process.
• Migration of code between the Environments and maintaining the code backups.
• Designed and Developed IDQ mappings for address validation / cleansing, doctor master data matching, data conversion, exception handling, and report exception data.
• Integration of various data sources like Oracle, SQL Server, Fixed Width & Delimited Flat Files, DB2.
• Involved in the Unit Testing and Integration testing of the workflows developed.
• Extensively worked with Korn-Shell scripts for parsing and moving files and even for re-creating parameter files in post-session command tasks.
• Imported Source/Target Tables from the respective databases and created reusable transformations like Joiner, Routers, Lookups, Filter, Expression and Aggregator and created new mappings using Designer module of Informatica.
• Used the Address Doctor to validate the address and performed exception handling, reporting and monitoring the system. Created different rules as mapplets, Logical Data Objects (LDO), workflows. Deployed the workflows as an application to run them. Tuned the mappings for better performance.
• Working with database connections, SQL joins, cardinalities, loops, aliases, views, aggregate conditions, parsing of objects and hierarchies.
• Developed shell scripts for running batch jobs and scheduling them.
• Manage multiples jobs to execute the packages and configuration files.
• Create multiples Store Procedures, Views and Functions.
• Deployment and testing the integration solutions.
• Handling User Acceptance Test & System Integration Test apart from Unit Testing with the help of Quality Center as bug logging tool. Created & Documented Unit Test Plan (UTP) for the code.
• Involved in Production Support.

Environment: Informatica Power Center 9.6, Informatica Data Quality (IDQ) 9.5, Informatica MDM 9.6, Natezza, Oracle 11g, SQL Server, PL/SQL, Unix.

Confidential, Phoenix, AZ

Sr. Informatica ETL Developer

Responsibilities:

• Develop complex mappings by efficiently using various transformations, Mapplets, Mapping Parameters/Variables, Mapplet Parameters in Designer. The mappings involved extensive use of Aggregator, Filter, Router, Expression, Joiner, Union, Normalizer, Sequence generator, SQL and Web Service transformations.
• Demonstrated the ETL process Design with Business Analyst and Data Warehousing Architect.
• Assisted in building the ETL source to Target specification documents
• Built the Physical Data Objects and developed various mapping, mapplets/rules using the Informatica Data Quality (IDQ) based on requirements to profile, validate and cleanse the data. Identified and eliminated duplicate datasets and performed Columns, Primary Key, Foreign Key profiling using IDQ 9.5.1.
• Worked on Agile Methodology, participated in daily/weekly team meetings, guided two groups of seven developers in Informatica PowerCenter/Data Quality (IDQ), peer reviewed their development works and provided the technical solutions. Proposed ETL strategies based on requirements.
• Work on SQL coding for overriding for generated SQL query in Informatica.
• Prepared low level technical design document and participated in build/review of the BTEQ Scripts, FastExports, Multiloads and Fast Load scripts, Reviewed Unit Test Plans&System Test cases.
• Involve in Unit testing for the validity of the data from different data sources.
• Design and develop PL/SQL packages, stored procedure, tables, views, indexes and functions. Experience dealing with partitioned tables and automating the process of partition drop and create in oracle database.
• Performed tuning and optimization of complex SQL queries using Teradata.
• Responsible for Collect Statics on FACT tables.
• Design and development of the complete Decision Support System using Business Objects.
• Perform data validation in the target tables using complex SQLs to make sure all the modules are integrated correctly.
• Perform Data Conversion/Data migration using Informatica PowerCenter.
• Involve in performance tuning for better data migration process.
• Analyze Session log files to resolve error in mapping and identified bottlenecks and tuned them for optimal performance.
• Used Data Transformation Studio to transform unstructured to structured forms.
• Create UNIX shell scripts for Informatica pre/post session operations.
• Automated the jobs using CA7 Scheduler.
• Document and present the production/support documents for the components developed, when handing-over the application to the production support team.
• Created Data Model for the Data Marts.
• Used materialized views to create snapshots of history of main tables and for reporting puspose.
• Coordinating with users for migrating code from Informatica 8.6 to Informatica 9.5.
• Monitored day to day Loads, Addressed & resolved Production issues in an abrupt & timely manner and provided support for the ETL jobs running in Production in order to meet the SLA's
• Used various transformations like Source Qualifier, Expression, Aggregator, Joiner, Filter, Lookup, Update Strategy Designing and optimizing the Mapping.
• Prepared SQL Queries to validate the data in both source and target databases.

Environment: Informatica 9.5/8.6, Informatica Data Quality (IDQ) 9.5, Oracle 11g, B2B,SQL server 2008 R2, SQL, T-SQL, PL/SQL, Toad 10.6, SQL Loader, OBIEE, Unix, Flat files, Teradata.

Confidential, Detroit, MI

ETL Informatica Developer

Responsibilities:

• Logical and Physical data modeling was done using Erwin for data warehouse database in STAR SCHEMA.
• Worked on Agile Methodology, participated in daily/weekly team meetings, guided two groups of seven developers in Informatica PowerCenter/Data Quality (IDQ), peer reviewed their development works and provided the technical solutions. Proposed ETL strategies based on requirements.
• Worked with health payer related data such as customers, policy, policy transactions, claims.
• Generated weekly and monthly report status for the number of incidents handled by the support team.
• Designed and developed complex mappings by using Lookup, Expression, Update, Sequence generator, Aggregator, Router, Stored Procedure, etc., transformations to implement complex ETL logics
• Worked with Informatica power center Designer, Workflow Manager, Workflow Monitor and Repository Manager.
• Used Source Analyzer and Warehouse designer to import the source and target database schemas, and the Mapping Informatica Designer to create complex mappings from Business requirements.
• Created various transformations like filter, router, lookups, stored procedure, joiner, update strategy, expressions and aggregator to pipeline data to Data Warehouse/Data Marts and monitored the Daily and Weekly Loads.
• Designed and developed various complex SCD Type1/Type2 mappings in different layers, migrated the codes from Dev to Test to Prod environment. Wrote down the techno-functional documentations along with different test cases to smooth transfer of project and to maintain SDLC.
• Experience in using Stored Procedures, TOAD, Explain Plan, Ref Cursors, Constraints, Triggers, Indexes-B-tree Index, Bitmap Index, Views, Inline Views, Materialized Views, Database Links, Export/Import Utilities.
• Developed and maintained ETL (Extract, Transformation and Loading) mappings to extract the data from multiple source systems like Oracle, SQL server and Flat files and loaded into Oracle.
• Developed Informatica Workflows and sessions for mappings using Workflow Manager.
• Deployed the Informatica code and worked on code merge between two different development teams.
• Identified the bottlenecks in the sources, targets, mappings, sessions and resolved the problems.
• Created Pre-& Post-Sessions UNIX Scripts to merge the flat files and to create, delete temporary files, change the file name to reflect the file generated date etc.

Environment: Informatica Power Center Designer 9.5/8.6, Informatica Repository Manager, Oracle10g/9i,DB2 6.1, Erwin, TOAD, Unix- SunOS, PL/SQL,SQL Developer, Teradata

Confidential

ETL Informatica Developer

Responsibilities:

• Involved in business analysis and technical design sessions with business and technical staff to develop requirements document and ETL specifications.
• Involved in designing dimensional modeling and data modeling using Erwin tool.
• Created high-level Technical Design Document and Unit Test Plans.
• Developed mapping logic using various transformations like Expression, Lookups (Connected and Unconnected), Joiner, Filter, Sorter, Update strategy and Sequence generator.
• Wrote complex SQL override scripts at source qualifier level to avoid Informatica joiners and Look-ups to improve the performance as the volume of the data was heavy.
• Responsible for creating workflows. Created Session, Event, Command, and Control Decision and Email tasks in Workflow Manager
• Prepared user requirement documentation for mapping and additional functionality.
• Extensively used ETL to load data using Power Center from source systems like Flat Files into staging tables and load the data into the target database Oracle. Analysed the existing systems and made a Feasibility Study.
• Analysed current system and programs and prepared gap analysis documents
• Experience in Performance tuning & Optimization of SQL statements SQL trace
• Involved in Unit, System integration, User Acceptance Testing of Mapping.
• Supported the process steps under development, test and production environment
• Participated in the technical design along with customer team, preparing design specifications, functional specifications and other documents.
• Used Transformation Developer to create the reusable Transformations.
• Used Informatica Power Center Workflow manager to create sessions, batches to run with the logic embedded in the mappings.
• Wrote SQL Scripts for the reporting requirements and to meet the Unit Test Requirements.
• Validated the Mappings, Sessions & Workflows, Generated & Loaded the Data into the target database.
• Used Informatica’ s features to implement Type I, II changes in slowly changing dimension tables and also developed complex mappings to facilitate daily, weekly and monthly loading of data.
• Extensively worked on Oracle SQL's for Data Analysis and debugging.
• Handled scripts for pre-validating the source File structures before loading into the Staging by comparing the source file headers against the base lined header
• Worked on Teradata Utilities (Multiplied, fast Load, and Export/Import) to improve performance.
• Wrote shell scripts and control files to load data into staging tables and then into Oracle base tables using SQL*Loader.
• Used PMCMD command to automate the Power Center sessions and workflows through UNIX.
• Validated the Mappings, Sessions & Workflows, Generated & Loaded the Data into the target database.
• Involved in troubleshooting existing ETL bugs.

Environment: Informatica Power Center 8.6, ETL, Flat files, Oracle 10g, MS SQL Server 2008, PL/SQL, Shell Programming, TIBCO, SQL * Loader, Toad, Excel and Unix scripting, Sun Solaris, Windows 2002.

Confidential

ETL Informatica Developer

Responsibilities:

• Involved in implementation of the Test cases and Test Scripts.
• Tested the data and data integrity among various sources and targets.
• Tested to verify that all data were synchronized after the data is troubleshoot, and also used SQL to verify/validate test cases.
• Written Test Cases for ETL to compare Source and Target database systems and check all the transformation rules.
• Defects identified in testing environment where communicated to the developers using defect tracking tool HP Quality Center
• Performed Verification, Validation, and Transformations on the Input data
• Tested the messages published by INFORMATICA and data loaded into various databases
• Written Test Cases for ETL to compare Source and Target database systems and check all the transformation rules.

Environment: Informatica Power Center 8.6.1, Erwin 4.5, Windows XP, Oracle 10g/9i, Sybase 4.5, SQL*Loader, SQL Navigator, SQL, PL/SQL.