PROFESSIONAL SUMMARY:

• 8+ years of IT experiences with (6+) years in the Analysis, Design, Developing and Testing and Implementation of business application systems.
• Strong experience in the Analysis, design, development, testing and Implementation of Business Intelligence solutions using Data Warehouse/Data Mart Design, ETL, OLAP, BI, Client/Server applications.
• Strong Data Warehousing ETL experience of using Informatica 9.1/8.6.1/8.5/8.1/ PowerCenter Client tools - Mapping Designer, Repository manager, Workflow Manager/Monitor and Server tools - Informatica Server, Repository Server manager.
• Expertise in Data Warehouse/Data mart, ODS, OLTP and OLAP implementations teamed with project scope, Analysis, requirements gathering, data modeling, Effort Estimation, ETL Design, development, System testing, Implementation and production support.
• Extensive testing ETL experience using Informatica 9.1/8.6.1/8.58.1/7.1/6.2/5.1 (Power Center/ Power Mart) (Designer, Workflow Manager, Workflow Monitor and Server Manager) Teradata and Business Objects.
• Hands on experience in Pentaho Business Intelligence ServerStudio.
• Used transformations like Joiner, Expression, Connected and Unconnected lookups, Filter, Aggregator, Store Procedure, Rank, Update Strategy, Java Transformation, Router and Sequence generator.
• Designed ETL process using Informatica Tool to load from Sources to Targets through data Transformations.
• Design and development of multi-layer Web Based information systems using Web Services including Java and JSP
• Strong experience in Dimensional Modeling using Star and Snow Flake Schema, Identifying Facts and Dimensions, Physical and logical data modeling using ERwin and ER-Studio.
• Expertise in working with relational databases such as Oracle 11g/10g/9i/8x, SQL Server 2008/2005, DB2 8.0/7.0, UDB, MS Access and Teradata.
• Extensive experience in developing Stored Procedures, Functions, Views and Triggers, Complex SQL queries using SQL Server, TSQL and Oracle PL/SQL.
• Experience in resolving on-going maintenance issues and bug fixes; monitoring Informatica sessions as well as performance tuning of mappings and sessions.
• Experience in all phases of Data warehouse development from requirements gathering for the data warehouse to develop the code, Unit Testing and Documenting.
• Extensive experience in writing UNIX shell scripts and automation of the ETL processes using UNIX shell scripting.
• Proficient in the Integration of various data sources with multiple relational databases like Oracle11g /Oracle10g/9i, MS SQL Server, DB2, Teradata, VSAM files and Flat Files into the staging area, ODS, Data Warehouse and Data Mart.
• Experience in using Automation Scheduling tools like Autosys and Control-M.
• Worked extensively with slowly changing dimensions.
• Hands-on experience across all stages of Software Development Life Cycle (SDLC) including business requirement analysis, data mapping, build, unit testing, system integration and user acceptance testing.

TECHNICAL SKILLS:

Operating Systems: Windows 2008/2007/2005/ NT/XP, UNIX, MS-DOS

ETL Tools: Informatica Power Center 9.1/9.5 (Designer, Workflow Manager, Workflow Monitor, Repository manager and Informatica Server), Talend, SSIS

Databases: Oracle 11g/10g/9i/8i, MS SQL Server 2008/2005, DB2 v8.1, Teradata

Data Modeling tools: Erwin, MS Visio

Languages: SQL, PL/SQL, UNIX, Shell scripts, C++, SOAP UI, JSP, Web Services, Java Script, HTML, Eclipse

Scheduling Tools: Autosys, Control-M, TWS

Testing Tools: QTP, WinRunner, LoadRunner, Quality Center, Test Director, Clear test, Clear case.

PROFESSIONAL EXPERIENCE:

Confidential, Los Angeles, CA

Sr. Informatica Developer

Responsibilities:

• Worked on Informatica 9.1 Power Center tools- Designer, Repository Manager, Workflow Manager, and Workflow Monitor using TWS.
• Parsed high-level design specification to simple ETL coding and mapping standards.
• Designed and customized data models for Data warehouse supporting data from multiple sources on real time
• Designed ETL process using Informatica Tool to load from Sources to Targets through data Transformations.
• Developed advanced Oracle stored procedures and handled SQL performance tuning.
• Involved in building the ETL architecture and Source to Target mapping to load data into Data warehouse.
• Worked with team of developers on Python applications for RISK management.
• Involved in creating the mapping documents with the transformation logic for implementing few enhancements to the existing system.
• Created mapping documents to outline data flow from sources to targets.
• Involved in Dimensional modeling (Star Schema) of the Data warehouse and used Erwin to design the business process, dimensions and measured facts.
• Responsible for developing, support and maintenance for the ETL (Extract, Transform and Load) processes using Informatica power center.
• Maintained stored definitions, transformation rules and targets definitions using Informatica repository Manager.
• Used various transformations like Filter, Expression, Sequence Generator, Update Strategy, Joiner, Stored Procedure, and Union to develop robust mappings in the Informatica Designer.
• Developed mapping parameters and variables to support SQL override.
• Created mapplets & reusable transformations to use them in different mappings.
• Used Python scripts to update content in the database and manipulate files.
• Used existing ETL standards to develop these mappings
• Worked on different tasks in Workflows like sessions, events raise, event wait, decision, e-mail, command, worklets, Assignment, Timer and scheduling of the workflow.
• Unit testing, code reviewing, moving in UAT and PROD.
• Migrated the code into QA (Testing) and supported QA team and UAT (User).
• Created detailed Unit Test Document with all possible Test cases/Scripts.
• Conducted code reviews developed by my team mates before moving the code into QA.
• Provided support to develop the entire warehouse architecture and plan the ETL process.
• Assisted in writing code in Python
• Modified existing mappings for enhancements of new business requirements.
• Prepared migration document to move the mappings from development to testing and then to production repositories.
• Involved in production support.
• Works as a fully contributing team member, under broad guidance with independent planning & execution responsibilities.
• Wrote and executed various MYSQL database queries from Python using Python-MySQL connector and MySQLdb package.

Environment: Informatica Power Center 9.0.1/8.6.1, PL/SQL, Oracle 11g/10g, Erwin, Autosys, SQL Server 2008, Sybase, UNIX

Confidential, Irving, TX

Sr. Informatica Developer

Responsibilities:

• Responsible for Business Analysis and Requirements Collection.
• Worked on Informatica Power Center tools- Designer, Repository Manager, Workflow Manager, and Workflow Monitor.
• Parsed high-level design specification to simple ETL coding and mapping standards.
• Designed and customized data models for Data warehouse supporting data from multiple sources on real time
• Involved in building the ETL architecture and Source to Target mapping to load data into Data warehouse.
• Extracted the data from the flat files and other RDBMS databases into staging area and populated onto Data warehouse.
• Developed complex mappings using corresponding Source, Targets and Transformations like update strategy, lookup, stored procedure, SQL, sequence generator, joiner, aggregate, Java and expression transformations in extracting data in compliance with the business logic
• Maintained stored definitions, transformation rules and targets definitions using Informatica repository Manager.
• Worked on different tasks in Workflows like sessions, events raise, event wait, decision, e-mail, command, worklets, Assignment, Timer and scheduling of the workflow.
• Managed and executed the test process, using Agile Methodology.
• Created sessions, configured workflows to extract data from various sources, transformed data, and loading into data warehouse.
• Used Type 1 SCD and Type 2 SCD mappings to update slowly Changing Dimension Tables.
• Extensively used SQL* loader to load data from flat files to the database tables in Oracle.
• Written test strategy and all the important test scenarios to be covered and shared across the QA team.
• Generated weekly Status Reports to the QA managers.
• Modified existing mappings for enhancements of new business requirements.
• Used Debugger to test the mappings and fixed the bugs.
• Wrote UNIX shell Scripts & PMCMD commands for FTP of files from remote server and backup of repository and folder.
• Involved in Performance tuning at source, target, mappings, sessions, and system levels.
• Performed tests based on agile methodology SRUM Environment.
• Prepared migration document to move the mappings from development to testing and then to production repositories.

Environment: Informatica Power Center 8.6.1, Workflow Manager, Workflow Monitor, PL/SQL, Oracle 10g/9i, Erwin, Autosys, SQL Server 2005, UNIX AIX, Toad 9.0

Confidential, Farmington Hills, MI

ETL Informatica Developer

Responsibilities:

• Logical and Physical data modeling was done using Erwin for data warehouse database in STAR SCHEMA
• Using Informatica PowerCenter Designer analyzed the source data to Extract & Transform from various source systems (oracle 10g, DB2, SQL server and flat files) by incorporating business rules using different objects and functions that the tool supports.
• Using Informatica PowerCenter created mappings and mapplets to transform the data according to the business rules.
• Used various transformations like Source Qualifier, Joiner, Lookup, sql, and router, Filter, Expression and Update Strategy.
• Implemented slowly changing dimensions (SCD) for some of the Tables as per user requirement.
• Developed Stored Procedures and used them in Stored Procedure transformation for data processing and have used data migration tools
• Documented Informatica mappings in Excel spread sheet.
• Tuned the Informatica mappings for optimal load performance.
• Have used BTEQ, FEXP, FLOAD, MLOAD Teradata utilities to export and load data to/from Flat files.
• Analyzed, identified, fixed bad data and Imported data from SalesForce - CRM to Oracle. Upstream data integration and migration processes in predefined schemas.
• Created and Configured Workflows and Sessions to transport the data to target warehouse Oracle tables using Informatica Workflow Manager. Informatica Web-services and web-portal applications.
• Have generated reports using OBIEE 10.1.3 for the future business utilities.
• This role carries primary responsibility for problem determination and resolution for each SAP application system database server and application server.
• Worked along with UNIX team for writing UNIX shell scripts to customize the server scheduling jobs.
• Constantly interacted with business users to discuss requirements.

Environment: Informatica Power Center Designer 8.1, Informatics Repository Manager, Teradata, OBIEE Oracle10g/9i,DB2 6.1, Erwin, TOAD, SAP Version: 3.1.H,Unix- SunOS, PL/SQL,SQL Developer

Confidential, Basking Ridge, New Jersey

ELT Informatica Developer

Responsibilities:

• Interacted with Data Modelers and Business Analysts to understand the requirements and the impact of the ETL on the business.
• Designed ETL specification documents for all the projects.
• Created Tables, Keys (Unique and Primary) and Indexes in the SQL server.
• Extracted data from Flat files, DB2, SQL and Oracle to build an Operation Data Source. Applied business logic to load the data into Global Data Warehouse.
• Extensively worked on Facts and Slowly Changing Dimension (SCD) tables.
• Maintained source and target mappings, transformation logic and processes to reflect the changing business environment over time.
• Used various transformations like Filter, Router, Expression, Lookup (connected and unconnected), Aggregator, Sequence Generator, Update Strategy, Joiner, Normalizer, Sorter and Union to develop robust mappings in the Informatica Designer.
• Extensively used the Add Currently Processed Flat File Name port to load the flat file name and to load contract number coming from flat file name into Target.
• Worked on complex Source Qualifier queries, Pre and Post SQL queries in the Target.
• Worked on different tasks in Workflow Manager like Sessions, Events raise, Event wait, Decision, E-mail, Command, Worklets, Assignment, Timer and Scheduling of the workflow.
• Extensively used workflow variables, mapping parameters and mapping variables.
• Created sessions, batches for incremental load into staging tables and scheduled them to run daily.
• Used shortcuts to reuse objects without creating multiple objects in the repository and inherit changes made to the source automatically.
• Implemented Informatica recommendations, methodologies and best practices.
• Implemented performance tuning logic on Targets, Sources, Mappings and Sessions to provide maximum efficiency and performance.
• Involved in Unit, Integration, System, and Performance testing levels.
• Written documentation to describe program development, logic, coding, testing, changes and corrections.

Environment: Informatica Power Center 7.5, Oracle 10g, SQLServer2008, IBM ISeries (DB2), MS Access, Windows XP, Toad, Tidal, Cognos 8.4.1., SQL, PL/SQL, Transact-SQL.