SUMMARY:

• 6+ years of IT Experience in Data Warehousing, Database Design and ETL Processes in various business domains like finance, telecom, manufacturing and health care industries.
• Highly proficient in Development, Implementation, Administration and Support of ETL processes for Large - scale Data warehouses using Informatica Power Center.
• Worked extensively on ETL process using Informatica PowerCenter 9.x/8.x/7.x . Informatica Data Quality(IDQ) 9.6.1, Informatica MDM and Informatica B2B
• Extensively used ETL methodologies for supporting Data Extraction, Transformation and Loading process, in a corporate-wide-ETL solution using Informatica Power Center.
• Extensively worked on developing Informatica Designer, Workflow manager and Workflow monitor for data loads.
• Experience working with Cloud Computing on Platform Salesforce.com
• Extensive experience in using various Informatica Designer Tools such as Source Analyzer, Transformation Developer, Mapping Designer, Mapplet Designer.
• Experience in development and maintenance of SQL, PL/SQL, Stored procedures, functions, analytic functions, constraints, indexes and triggers.
• Experienced in IDQ (9X, 9.5.1) handing LDO’s PDO’s & some of the transformation to cleanse and profile the incoming data by using Standardizer, Labeler, Parser, Address Validator Transformations 8 years of experience in using different versions of Oracle database like 11g/10g/9i/8i.
• Excellent working knowledge of c shell scripting, job scheduling on multiple platforms, experience with UNIX command line and LINUX.
• Proficient with Informatica Data Quality (IDQ) for cleanup and massaging at staging area.
• Experience in creating batch scripts in DOS and Perl Scripting.
• Experience in ETL development process using Informatica for Data Warehousing, Data migration and Production support .
• Experience in both Waterfall and Agile SDLC methodologies.
• Sound knowledge of Relational and Dimensional modeling techniques of Data warehouse (EDS/Data marts) concepts and principles (Kimball/Inmon) - Star/Snowflake schema, SCD, Surrogate keys and Normalization/De-normalization.
• Data modeling experience in creating Conceptual, Logical and Physical Data Models using ERwin Data Modeler.
• Experience with TOAD, SQL Developer database tools to query, test, modify, analyze data, create indexes, and compare data from different schemas.
• Performed the data profiling and analysis making use of Informatica Data Explorer (IDE) and Informatica Data Quality (IDQ).
• Worked on Slowly Changing Dimensions (SCD's) Types -1, 2 and 3 to keep track of historical data.
• Knowledge in Data Analyzer tools like Informatica Power Exchange (Power Connect) to capture the changed data.
• Proficiency in data warehousing techniques for data cleansing, surrogate key assignment and Change data capture (CDC).
• Experience in integration of various data sources like Oracle, DB2, Flat Files and XML Files into ODS and good knowledge on Teradata 12.0/13.0, SQL Server 2000/2005/2008 and MS Access 2003/2007.
• Expertise in implementing complex business rules by creating re-usable transformations, Mapplets and Mappings.
• Involved in the designing of Landing, Staging and Base tables in Informatica MDM.
• Created MDM mapping and configured match and merge rules to integrate the data received from different sources.
• Optimized the Solution using various performance-tuning methods (SQL tuning, ETL tuning (i.e. optimal configuration of transformations, Targets, Sources, Mappings and Sessions), Database tuning using Indexes, partitioning, Materialized Views, Procedures and functions).
• Extensively used Autosys and Tidal for scheduling the UNIX shell scripts and Informatica workflows.

TECHNICAL SKILLS:

Operating System: UNIX, Linux, Windows

Programming and Scripting: C, C++, Java, Python,.Net, Perl Scripting, Shell Scripting, XSLT, PL/SQL, T-SQL.

Specialist Applications & Software: Informatica Power Center/ 10.1 10/9.6.1/9.5/9.1/8.6/8.1/7.1 , Informatica Power Exchange, Metadata Manager, Informatica Data Quality (IDQ), Informatica Data Explorer (IDE), MDM, SSIS, Salesforce, DataStage, etc.

Data Modeling (working knowledge): Relational Modeling, Dimensional Modeling (Star Schema, Snow-Flake, FACT, Dimensions), Physical, Logical Data Modeling, and ER Diagrams.

Databases tools: SQL Server Management Studio (2008), Oracle SQL Developer (3.0), Toad 11.6 (Oracle), Teradata, AQT v9 (Advanced query tool) (Oracle/Netezza), DB Artisan 9.0 (Sybase), SQL Browser (Oracle Sybase), Visio, ERWIN

Scheduling tools: Informatica Scheduler, CA Scheduler(Autosys), ESP, Maestro, Control-M.

Conversion/Transformation tools: Informatica Data Transformation, Oxygen XML Editor (ver.9, ver.10)

Software Development Methodology: Agile, Water fall.

Domain Expertise: Publishing, Insurance/Finance, HealthCare

Others (working knowledge on some): OBIEE RPD creation, OBIEE, ECM, Informatica Data Transformation XMAP, DAC, Rational Clear Case, WS-FTP Pro, DTD.

RDBMS: SQL, SQL*Plus, SQL*Loader, Oracle11g/10g/9i/8i, Teradata, IBM DB2, UDB 8.1/7.0, Sybase 12.5, Netezza v9, MS SQL Server 2000/2005/2008 , MS Access 7.0/2000.

PROFESSIONAL EXPERIENCE:

Confidential, Houston, TX

Informatica Developer

Roles and Responsibilities:

• Worked on Informatica power center since 2 years, supporting two primary warehouses (IRW) in client environment.
• Designed Source to Target mappings from primarily Flat files and Oracle using Informatica Power Center.
• Involved in design, development and implementation of ETL process in power center.
• Involved in managing, scheduling and monitoring the workflow sessions.
• Involved in conceptual, logical and physical data modeling and used star schema in designing the data warehouse .
• Involved in Error handling, bug fixing, Session monitoring, log analysis.
• Co-ordination with different teams in environment, such as DBA’s, windows network, UNIX, sap security.
• Worked on Power Mart client tools viz. Source Analyzer, Warehouse Designer, Mapping Designer, Mapplet Designer and Transformations Developer.
• Wrote a number of stored procedures to validate the complex mappings and automated the validation process.
• Created, optimized, reviewed, and executed SQL test queries to validate transformation rules used in source to target mappings/source views, and to verify data in target tables

Environment: Informatica - Power Center 9.6.1,netezza Oracle 9i/10g,teradata Rational Clear Quest,MS SQL Server 2000/2005 (SQL Server Management Studio, SQL Server Profiler), DB2, SQL, PL/SQL,UNIX Shell Scripting,TOAD and Windows NT/2000.

Confidential - San Antonio, TX

Sr.Informatica Developer

Responsibilities:

• Involved in gathering and analysis business requirement and writing requirement specification documents and identified data sources and targets.
• Worked closely with the Data Integration team to perform validations both on the Informatica MDM hub and Entity 360.
• Experience Working with the Address Doctor and its related Cleansing Functions
• Experience working in Pharmacy and Providers Data which are coming from different data sources
• Worked closely With the Business and PDA Team as the Data Stewards while performing the Match and Merge Tasks
• Communicated with business customers to discuss the issues and requirements.
• Designed, documented and configured the Informatica MDM Hub to support loading, cleansing of data.
• Involved in implementing the Land Process of loading the customer/product Data Set into Informatica MDM from various source systems.
• Worked on data cleansing and standardization using the cleanse functions in Informatica MDM.
• Developed ETL programs using Informaticato implement the business requirements.
• Developed several IDQ complex mappings in Informatica a variety of Power Center, transformations, Mapping Parameters, Mapping Variables, Mapplets& Parameter files in Mapping Designer using Informatica Power Center.
• Profiled the data using Informatica Data Explorer (IDE) and performed Proof of Concept for Informatica Data Quality (IDQ)
• Used Informatica Power Center to load data from different data sources like xml, flat files and Oracle, Teradata, Salesforce .
• Migrated servers from 1and1 to AWS Elastic Cloud (EC2), databases (RDS).
• Refactored Java ETL code to provide several new features such as redundancy, error handling, automation, image manipulation (SCALR), and the addition of the AWS Java SDK to handle the transfer of files to S3.
• Imported the IDQ address standardized mappings into Informatica Designer as a Mapplets.
• Utilized of Informatica IDQ to complete initial data profiling and matching/removing duplicate data
• Used relational SQL wherever possible to minimize the data transfer over the network.
• Identified and validated the Critical Data Elements in IDQ.
• Built several reusable components on IDQ using Standardizers and Reference tables which can be applied directly to standardize and enrich Address information.
• Effectively worked in Informatica version based environment and used deployment groups to migrate the objects.
• Successfully executed a customer 360 initiative covering global accounts in record timeframe using creative architectural and technical concepts.
• Used debugger in identifying bugs in existing mappings by analyzing data flow, evaluating transformations.

Environment: Informatica Power Center 10.1, UNIX, SQL, IDQ, IDE, CDC, MDM, Customer 360, Java, Linux, Perl, AWS,WINSCP, Shell, PL/SQL, Netezza, Teradata, Collibra, Microsoft SQL Server 2008, and Microsoft Visual studio.

Confidential, North Chicago, IL

Sr.Informatica Developer

Responsibilities:

• Involved in all phases of SDLC from requirement gathering, design, development, testing, Production, and support for production environment.
• Defined, configured, and optimized various MDM processes including landing, staging, base objects, foreign-key relationships, lookups, query groups, queries/custom queries, cleanse functions, batch groups and packages using Informatica MDM Hub console.
• Used Informatica Power Center for (ETL) extraction, transformation and loading data from heterogeneous source systems into target database.
• Involved in extracting the data from the Flat Files and Relational databases into staging area.
• Created Stored Procedures for data transformation purpose.
• Involved in the Dimensional Data Modeling and populating the business rules using mappings into the Repository for Data management
• Worked on Informatica Power Center 9 x tools - Source Analyzer, Data warehousing designer, Mapping, Designer, Mapplet & Transformations.
• Used Informatica power center and Data quality transformations - Source qualifier, expression, joiner, filter, router, update strategy, union, sorter, aggregator and normalizer, Standardizer, Labeler, Parser, Address Validator (Address Doctor), Match, Merge, Consolidation transformations to extract, transform, cleanse, and load the data from different sources into DB2, Oracle, Teradata, Netezza and SQL Server targets.
• Created and configured workflows, worklets & Sessions to transport the data to target warehouse Oracle tables using Informatica Workflow Manager.
• Worked on Database migration from Teradata legacy system to Netezza and Hadoop.
• Worked in building Data Integration and Workflow Solutions and Extract, Transform, and Load (ETL) solutions for data warehousing using SQL Server Integration Service (SSIS).
• Used Teradata Utilities (BTEQ, Multi-Load, and Fast-Load) to maintain the database.

Environment: Informatica Power Center 9.6.1, UNIX, Oracle, Linux, Perl, Shell, MDM, IDQ, PL/SQL, Tivoli, Oracle 11g/10g, Teradata 14.0.

Confidential, Columbus OH

Sr.Informatica Developer

Responsibilities:

• Worked with Business Analysts (BA) to analyze the Data Quality issue and find the root cause for the problem with the proper solution to fix the issue...
• Document the process that resolves the issue which involves analysis, design, construction and testing for Data quality issues
• Involved in doing the Data model changes and other changes in the Transformation logic in the existing Mappings according to the Business requirements for the Incremental Fixes
• Worked extensively with Informatica tools like Source Analyzer, Warehouse Designer, Transformation Developer, and Mapping Designer.
• Extensively used Informatica Data Explorer (IDE)&Informatica Data Quality (IDQ) profiling capabilities to profile various sources, generate score cards, create and validate rules and provided data for business analysts for creating the rules.
• Created Informatica workflows and IDQ mappings for - Batch and Real Time.
• Extracted data from various heterogeneous sources like DB2, Sales force, Mainframes, Teradata, and Flat Files using Informatica Power center and loaded data in target database.
• Created and Configured Landing Tables, Staging Tables, Base Objects, Foreign key relationships, Queries, Query Groups etc. in MDM.
• Defined the Match and Merge Rules in MDM Hub by creating Match Strategy, Match columns and rules for maintaining Data Quality
• Extensively worked with different transformations such as Expression, Aggregator, Sorter, Joiner, Router, Filter, and Union in developing the mappings to migrate the data from source to target.
• Used connected and Unconnected Lookup transformations and Lookup Caches in looking the data from relational and Flat Files. Used Update Strategy transformation extensively with DD INSERT, DD UPDATE, DD REJECT, and DD DELETE.
• Extensively Implemented SCD TYPE 2 Mappings for CDC (Change data capture) in EDW.
• Involved in doing Unit Testing, Integration Testing, and Data Validation.
• Migration of Informatica maps extensively involved in migration from Dev to SIT and UAT to Production environment.
• Developed Unix script to sftp, archive, cleanse and process many flat files
• Created and ran Pre-existing and debug sessions in the Debugger to monitor and test the sessions prior to their normal run in the Workflow Manager
• Extensively worked in migrating the mappings, worklets and workflows within the repository from one folder to another folder as well as among the different repositories.
• Created Mapping parameters and Variables and written parameter files.
• Used SQL queries and database programming using PL/SQL (writing Packages, Stored Procedures/Functions, and Database Triggers).
• Worked on Scheduling Jobs and monitoring them through Control M and CA scheduler tool(Autosys).
• Used SQL tools like TOAD to run SQL queries and validate the data in warehouse.
• Worked with the SCM code management tool to move the code to Production
• Extensively worked with session logs and workflow logs in doing Error Handling and trouble shooting.

Environment: : Informatica Power Center 9.0.1, Erwin, Teradata, Tidal, SQL Assistance, DB2, XML, Oracle 9i/10g/11g, MQ Series, OBIEE 10.1.3.2, IDQ, MDM Toad and UNIX Shell Scripts.

Confidential, Pittsburgh, PA

Sr. Informatica Developer/IDQ/MDM

Responsibilities:

• Designing the dimensional model and data load process using SCD Type 2 for the quarterly membership reporting purposes.
• Derived the dimensions and facts for the given data and loaded them on a regular interval as per the business requirement.
• Generating the data feeds from analytical warehouse using required ETL logic to handle data transformations and business constraints while loading from source to target layout.
• Worked on Master Data Management (MDM), Hub Development, extract, transform, cleansing, loading the data onto the staging and base object tables
• Extracted data from multiple sources such as Oracle, XML, and Flat Files and loaded the transformed data into targets in Oracle, Flat Files.
• Wrote Shell Scripts for Data loading and DDL Scripts.
• Worked with Informatica Data Quality (IDQ) toolkit, Analysis, data cleansing, data matching, data conversion, exception handling, and reporting and monitoring capabilities of IDQ
• Designing and coding the automated balancing process for the feeds that goes out from data warehouse.
• Implement the automated balancing and control process which will enable the control on the audit and balance and control for the ETL code.
• Hands on experience on HIPPA Transactions like 270, 271, 272, 273, 274, 275, 276, 277, 834, 835, 837 etc.
• Improving the database access performance by tuning the DB access methods like creating partitions, using SQL hints, and using proper indexes.
• All the jobs are integrated using complex Mappings including Mapplets and Workflows using Informatica power center designer and workflow manager.
• Worked on data cleansing and standardization using the cleanse functions in Informatica MDM.
• Created ETL mappings, sessions, workflows by extracting data from MDM system, FLASH DC & REM source systems.
• Designed and created complex source to target mappings using various transformations inclusive of but not limited to Aggregator, Look Up, Joiner, Source Qualifier, Expression, Sequence Generator, and Router Transformations.
• Mapped client processes/databases/data sources/reporting software to HPE’s XIX X12 processing systems(BizTalk/Visual Studio/Oracle SQL/MS SQL/C#/.Net/WSDL/SOAP/Rest/API/XML/XSLT).
• Used debugger in identifying bugs in existing mappings by analyzing data flow, evaluating transformations, and create mapplets that provides reusability in mappings.
• Analyzing the impact and required changes to in corporate the standards in the existing data warehousing design.
• Following the PDLC process to move the code across the environments though proper approvals and source control environments.
• Source control using SCM.

Environment: Informatica Power Center 9.0.1, Erwin 7.2/4.5, Business Objects XI, Unix Shell Scripting, XML, Oracle 11g/10g, DB2 8.0, IDQ, MDM, TOAD, MS Excel, Flat Files, SQL Server 2008/2005, PL/SQL, Windows NT 4.0.

Confidential

Informatica Developer

Responsibilities:

• Involved in analysis, design, development, test data preparation, unit and integration testing, Preparation of Test cases and Test Results
• Coordinating with client, Business and ETL team on development
• Developed Batch jobs using extraction programs using COBOL, JCL, VSAM, Datasets, FTP to Load Informatica tables
• Involved in full project life cycle - from analysis to production implementation and support with emphasis on identifying the source and source data validation, developing logic, and transformation as per the requirement and creating mappings and loading the data into BI database.
• Based on the business requirements created Functional design documents and Technical design specification documents for ETL Process.
• Designing and developing ETL solutions in Informatica Power Center 8.1
• Designing ETL process and creation of ETL design and system design documents.
• Developing code to extract, transform, and load (ETL) data from inbound flat files and various databases into various outbound files using complex business logic.
• Most of the transformations were used like Source Qualifier, Aggregator, Filter, Expression, and Unconnected and connected Lookups, Update Strategy.
• Created automated shell scripts to transfer files among servers using FTP, SFTP protocols and download files.
• Developed Informatica mappings, enabling the ETL process for large volumes of data into target tables.
• Designed and developed process to handle high volumes of data and high volumes of data loading in each SLA.
• Created Workflow, Worklets and Tasks to schedule the loads at required frequency using Informatica scheduling tool.
• Ensured acceptable performance of the data warehouse processes by monitoring, researching and identifying the root causes of bottlenecks.
• Acted as a liaison between the application testing team and development team in order to make timely fixes.

Environment: Informatica Power Center 8.1, ETL, Business Objects, Oracle 10g/9i/8i, HP - Unix, PL/SQL.