SUMMARY

• Nine Years of IT industry experience in working with various domains like Insurance, Retail and Finance.
• Strong Data Warehousing experience in using Informatica Power Center different versions 7.1.2/ 8.5.1/8.6.1/9.1/9.5.1/9.6.1.
• Strong experience in using Database systems like Oracle, Teradata 12.0/13.0/14.0/14.10, DB2, MySQL, and Sybase.
• Experience in writing SQL and PL/SQL programs stored procedures, Triggers, Functions.
• Having Seven years of strong experience on using Teradata database, Teradata utilities like TPT, FASTLOAD, MULTILOAD, and BTEQ scripts.
• Good Understanding in protection & recovery concepts in Teradata like Fallback, Raids, and Journals.
• Have enough knowledge on Teradata Administrative activities.
• Have strong experience in Tuning Teradata Queries (BTEQ) for better performance.
• Have strong experience using Informatica and Teradata combination in Enterprise Warehouse environment.
• Strong experience in working with Flat Files & XML objects.
• Expereince in rewriting Hadoop HiveQL and Map Reduce scripts in to Informatica.
• Experience in Debugging and implemented various Performance Tuning techniques on Sources, Targets, Mappings, and Workflows in Informatica ETL mappings.
• Created Unit Test cases and Unit Test results.
• Strong expertise in understanding the Warehouse Data model.
• Solid expertise in using ETL Scheduling tools.
• Strong experience in writing UNIX Shell Scripts.
• Supported Enterprise ware house in critical environments and worked 24 * 7 to make sure not effecting the business.
• Experience in Profiling source data and coming up with model (LDM, PDM) and ETL business requirements (STM - Source to Target Mapping Document).
• Attended class room training on Agile Methodology Techniques and Certified in Scrum Master Program (CSM).
• Excellent verbal and communication skills clear understanding of business procedures and ability to work as an individual as well as part of a team.
• Excellent Analytical and Problem Solving Skills.

TECHNICAL SKILLS

Data Warehousing: Informatica Power Center 9.6.1/9.5.1/9.1/ 8.6.1/8.5.1 /7.1.2

Databases: Teradata 12.0/13.0/14/14.10 (Fast-Load, Multi-Load, T-Pump, TPT and BTEQ), Oracle 11g/10g/9i, Sybase 12.0, DB2 UDB 8.0 / DB2 BLU, MySQL

BI Tools: Cognos 8.0/7.1, Report Builder (Custom)

Data Modeling: MS Visio, ERWIN

Job Scheduling: CA Autosys, BMC Control M, Informatica Scheduler

Programming: Unix Shell Scripting, SQL and PL/SQL

Environment: Windows, MS-Dos, Linux

Other Tools: TD SQL Assistant, TD View Point, Toad, Win SQL, SQL Navigator, Telnet, Putty, WinScp

PROFESSIONAL EXPERIENCE

Confidential, Austin, TEXAS

Informatica and Teradata Developer/ Data Analyst

Responsibilities:

• Working with Business Users to gather the requirements.
• Working with Data Modelers in implementing Logical and Physical Data Models.
• Pull data from different sources like oracle, MySql, applications (SFDC) and Flat Files using Informatica Power center 9.5.1/8.6.1 and loaded it into Teradata.
• Strong understanding of XML objects and processing them using Informatica.
• Extensively used different transformations available in Informatica for EDW development.
• Extensively used Teradata Utilities TPT, M- Load & F-Load for most of the ETL Loads and Fast Export for extracting data from Teradata.
• Written Teradata BTEQ scripts for loading Confidential Site usage data.
• Worked to profile source data to analyze and giving the outputs about data behavior in the source.
• Involved in doing GAP Analysis for changes in source system.
• Implemented ftp process with UNIX to ftp the source files from application server to local informatica server and vice - versa
• Implemented cleansing techniques to clean the input files for ETL Process.
• Implemented various Archiving and purging process in accordance to business for better management of Teradata environment.
• Implemented various audits in EDW for better tracking of EDW Loads and process.
• Implemented various types of change data captures according to source data behavior and business requirements.
• Worked in analyzing ware house data for business purposes.
• Implemented various Performance tuning techniques at ETL & Teradata BTEQ for efficient development and performance.
• Used Teradata View point to monitor the performace of Jobs (BTEQ) in Teradata.
• Involved in doing Error Handling using session logs and workflow logs.
• Involved in migrating the ETL, Teradata and UNIX objects to different environments.
• Involved in doing Unit Testing and Integration Testing in both Dev and QA.
• Created Unix Shell Scripts to run the jobs, Ftp from local servers and schedule the workflows.
• Hands on experience in developing ETL templates for POCs and high level discussion on ETL architecture.
• Worked with external vendors (omniture, Adobe) to understand their data feeding for Confidential site usage file structure and worked extensively in profiling data and getting designing ETL Layout.
• Involved in doing analysis, document preparation and Testing for Upgrading Teradata database from TD12 to TD14.
• Worked in Testing ETL environment for Upgrading activity from INFA 8.6 to INFA 9.1 and to INFA 9.5.1.
• Working for on call to support ware house production data.
• Experienced in analyzing HiveQL scripts in Hadoop that were written to load data from MySQL to data mart and re built the Mapping document which helps to rewrite the logic in Informatica to load data from MySQL to DB2 BLU.
• Worked to generate the adhoc reports in Custom Report Builder for Business users
• Working with reporting team to generate accurate reports for business users from EDW.

Environment: Informatica Power Center 9.6.1/9.5.1/9.1.0/8.6.1, Oracle 10g, MySql, Teradata 14.10/12.0, SFDC, Flat Files, XML, HiveQL, UNIX, Cognos 8.0, Report Builder, Windows XP Professional

Confidential

Lead ETL Informatica developer

Responsibilities:

• Worked with Business Analyst in gathering the requirements and prepared Source to Target Mappings which helpful in designing and developing Enterprise Information Store.
• Prepared Design Documents which is helpful in Analyzing how data got migrated from OLTP to EIS/EDW for production support.
• Extracted data from Oracle and Flat Files using Informatica Powercenter 8.6.1/8.5.1 and loaded it into TeraData.
• Extensively used TeraData Utilities (T-Pump, M-Load, and F-Load) to load large volumes of data in to EIS.
• Used TeraData utility Fast Export for fast extracting of data from TeraData.
• Worked with hundreds of mater Tables and Fact Tables to load in EDW.
• Created shell script to release loader locks (M-Load, Fast Load) in case of any failures.
• Used BTEQ scripting for executing Sqls as part of post success commands.
• Written Oracle stored procedures as per the business requirements.
• Extensively used different transformations available in Informatica Such as Source Qualifier, Aggregator, Expression, Joiner, Union, Router, Filter, Lookup, and Normalizer while developing the mappings.
• Worked with Task developer extensively in creating Reusable Sessions and created task such as email.
• Created worklets using worklet designer.
• Created mapping Parameters and Variables.
• Implemented various Performance Tuning techniques in Informatica.
• Involved in doing Error Handling using session logs and workflow logs.
• Migrated developed mapping objects from one folder to other folder in DEV using Import Export fecility, from Dev to QA and to Prod Repositories by creating labels.
• Worked in tough and tight schedules for emergency fixes in production support on call.
• Created Test Plans and written test cases while doing Unit Testing, Integration Testing and worked with QA team in getting tested the code in QA Repository.
• Worked with Quality center in creating, tracking and assigning the defects while testing.
• Used Autosys in Scheduling and monitoring the jobs in QA and PROD.
• Created Unix Shell Scripts to schedule the workflows Using Autosys in QA and Prod Environment.

Environment: Informatica Powercenter 8.6.1/8.5.1 /7.1.2, Oracle 10g, Flat Files, Teradata 12.0, Cognos 8.3, UNIX, F-Secure SSH Client, Erwin, SQL Assistant, BTEQ, TOAD 9.0.1, SQL Plus, Auto Sys, Windows XP Professional

Confidential, New York

Informatica Developer

Responsibilities:

• Worked with Business data Analysts (BDA) to understand the requirements for EDW development.
• Extracted data from various heterogeneous sources like Sybase, Flat Files and COBOL (VSAM) using Informatica Power center and loaded data in target database DB2.
• Involved in DWH up gradation for source system changes.
• Utilized all the features of Source Qualifier transformation such as filter, joiner, sorter and SQL override to the extend level at the source level.
• Used Normalizer Transformation for Cobol (VSAM) sources.
• Extensively worked with different transformations such as Expression, Aggregator, Sorter, Joiner, Router, LookUp, Filter and Union in developing the mappings to migrate the data from source to target.
• Worked with External stored procedures for data cleansing purpose.
• Extensively used Lookup transformation and Lookup Caches in looking the data from relational and Flat Files.
• Created Mapping parameters and Variables and written parameter files.
• Created UNIX shell scripts for various needs.
• Involved in doing Unit Testing, Integration Testing and Data Validation.
• Implemented various Performance Tuning techniques by finding the bottle necks at source, target, mapping and session and optimizing them.
• Worked with the Debugger Wizard in debugging the mappings.
• Extensively worked with session logs and workflow logs in doing Error Handling and trouble shooting.
• Worked with the Control M scheduling team in scheduling Informatica Jobs as per the requirement and frequency.
• Worked with the Cognos team in generating various reports.
• Involved in preparing the Migration Documents.
• Implemented Informatica Procedures and Standards while developing and testing the Informatica objects.

Environment: Informatica Power Center 7.1.2, Sybase, DB2, Flat Files, Cobol (VSAM),Win SQL, Toad, Ultra Edit - 32, SQL Advantage, Control Center, Power Designer SQL Modeler, CDMA, Ms-Access, MS-Visio, Cognos, UNIX, Windows XP Professional.

Confidential, Sanfrancisco, CA

Informatica Developer

Responsibilities:

• Worked with the Confidential financial services staff and Business analysts for requirements gathering, business analysis, and project coordination.
• Designed the 'Dimensional model' of the Data warehouse and used Erwin 4.0 to design the business process, grain of the data representation, dimensions and fact tables with measured facts.
• Identified all the confirmed dimensions to be included in the target warehouse design and confirmed the granularity of the facts in the fact tables.
• Worked with Power Center Tools Designer, Workflow Manager and Workflow Monitor.
• Extracted data from various heterogeneous sources like Oracle, DB2, and Flat Files.
• Worked with huge tables that consisted of around 256 columns and 100 million records per each table.
• Extensively used Source Qualifier Transformation and used most of its features like filter, SQL override and Sorter.
• Extensively used various transformations available in 7.1.2
• Extensively worked with Look up Transformation (Connected & Unconnected) and Look up Caches (Static, Dynamic, Persistent, and Shared).
• Identified and tracked the slowly changing dimensions (Type 1 SCD & Type 2 SCD).
• Used Update Strategy DD INSERT, DD UPDATE, DD DELETE, DD REJECT Based on the requirement.
• Developed Mapping Variables and Parameters for Incremental Loading.
• Improved the performance of the mappings by moving the filter transformations early into the transformation pipeline, performing the filtering at Source Qualifier for relational databases and selecting the table with fewer rows as master table in joiner transformations.
• Involved in Working with shell scripts on UNIX (IBM - AIX) for Informatica ETL tool to run the Sessions.
• Responsible for monitoring all the sessions that are scheduled, running completed and failed.
• Involved in debugging the Mappings that failed.
• Worked with Session Logs and Work Flow Logs For Error Handling and Trouble Shooting.
• Tuning of Database queries for better performance.
• Worked with CA Autosys scheduling team for scheduling the Informatica PowerCenter Workflows.
• Developed Migration documents, Mapping Documents which needs to be implemented
• Involved in doing unit testing and integration testing on various mappings.

Environment: Informatica Powercenter 7.1.2, UDB DB2, Oracle 10G/9i, Flat Files, Business Objects 6.5, TOAD, Erwin 4.0,CA Autosys, UNIX (IBM - AIX), and Windows NT.