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Informatica Developer Resume

Irving, TX


  • Over 8 years of experience in Information Technology with a strong background in Database development and Data warehousing.
  • Good experience in designing, Implementation of Data warehousing and Business Intelligence using ETL tools like Informatica Power Center (designer, workflow manager, workflow monitor and repository manager).
  • 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.
  • 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.
  • Experience in developing Transformations, Mapplets and Mappings in Informatica Designer and creating tasks using Workflow Manager to move data from multiple sources to target.
  • Worked on Informatica Data Quality 9.1(IDQ) tool kit and performed data profiling, cleansing and matching and also imported data quality files as reference tables.
  • Developed mappings in Informatica IDQ using different transformations Labeler, Standardizer, Address Doctor, Expression, Sorter etc.
  • Worked in different phases of the projects involving Requirements Gathering, Design, Development, Deployment, Testing and Maintaining.
  • Good Knowledge on Database architecture of OLTP and OLAP applications, Data Analysis.
  • Experience in E-R modeling, developing Database Schemas like Star schema, Snowflake schema used in relational, dimensional and multidimensional modeling.
  • Worked with wide variety of sources like Relational Databases, Flat Files, Mainframes, XML files and Scheduling tools like Control-M, Auto sys and Informatica Scheduler.
  • Strong experience working with different RDBMS like Oracle 11g/10g/9i/8i/8.0/7.x, Sybase, MS SQL Server 2008/2005/2000 , Teradata, SQL, PL/SQL, SQL* PLUS, SQL* Loader, TOAD, Stored Procedures, Triggers.
  • Very Strong skills and clear understanding of requisites and solutions to various issues in implementation throughout the Software Development life cycle (SDLC).
  • Hands on experience in PL/SQL (Stored Procedures, Functions, Packages, Triggers, Cursors, Indexes) and UNIX Shell scripting.
  • Good knowledge on data quality measurement using IDQ and IDE.
  • Expertise in doing Unit Testing, Integration Testing, System Testing and Data Validation for Developed Informatica Mappings.
  • Proficient in integration of CRM data source such as Salesforce and SAP using Power Exchange.
  • Created many frameworks like IMPORT/EXPORT Utility, Restartability, Disable/Enabling Indexes, Update Statistics etc. that enable simpler implementation and faster development of DWBI Solutions and Product.
  • Hands on experience working in LINUX, UNIX and Windows environments.
  • Experience in working Production Support and migrated the code from DEV to QA to Production.
  • Experience creating different documentations like RTM, BRD, HLD, TDD, Unit Test Cases, Deployment Plans and Production Turnover documents.
  • Excellent Verbal and Written Communication Skills. Have proven to be highly effective in interfacing across business and technical groups.


ETL Tools: Informatica Power Center 9.5.x/9.1/8.6.x/8.5.x., Informatica Power Exchange, IDQ (IDE), Data Stage, SSIS, Pentaho.

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

Databases: Oracle11g/10g/9i/8.x, SQL Server 2008/2005/2000 , IBM DB2, Teradata 13.1/V2R5, V2R6, Sybase, MS Access

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

Reporting Tools: Crystal Reports, Business Objects XI R2/XI 3.3, OBIEE 11g R1 (11.1.5).

Programming: SQL, PL/SQL, Transact SQL, HTML, DHTML, XML, C, C++, Shell, VBA

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

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


Confidential, Irving, TX

Informatica Developer

Environment: Informatica 9.5.x, DB2, Power Exchange 8.6.1,flat files, Passport, Harvest, Windows XP, UNIX and Control -M


  • Worked on Informatica 9.5.1 Power center tools- Designer, Repository Manager, Workflow Manager and workflow monitor.
  • Used IDE tool to load the data from file to stage tables.
  • Created column level Profiles and IDE mappings to analyze the data patterns and statistics for each column in the source.
  • Designed ETL process using Informatica Tool to load from Sources to Targets through data Transformations.
  • Used Informatica partitions like the Database and Pass-through for performance tuning.
  • Involved in Reviews & Unit Testing of Mappings and Workflows.
  • Involved in creating mapplets and worklets.
  • Used UNIX shell scripts to FTP the source files from EDI servers using the CONFIG files.
  • Worked on various tasks of workflows such as the Command, Event wait and event raise.
  • Created various parameter files and workflow variables for flexible run of the workflows.
  • Modified existing mappings for enhancements of new business requirements.
  • Performed unit testing and created documents with the test cases using SQL scripts.
  • Used various transformations like the Source Qualifier, Joiner, Expression, Filter, Lookup, Sequence Generator and Router to develop complex mappings using the Power Center Designer.
  • Worked on various types of flat files i.e. fixed width and delimited.
  • Copied/Exported/Imported the mappings/sessions/ worklets /workflows from development to Test Repository and promoted to Production.
  • Works as a fully contributing team member, under broad guidance with independent planning & execution responsibilities
  • Involve in UAT to get Client GoLive Approval.
  • Creating Deployment Groups and Harvest Packages to move the code to production.
  • Used Passport in converting the mainframe file sent from the client into flat file.

Confidential, Columbus, OH

Informatica Developer

Environment: Informatica 9.5.x, Oracle 11g, MS SQL Server 2008, Power Exchange 8.6.1, flat files, Windows XP, UNIX and Control -M


  • Analyze the business requirements and framing the Business Logic for the ETL Process and maintained the ETL process using Informatica Power Center.
  • Work extensively on various transformations like Normalize, Expression, Union, Joiner, Filter, Aggregator, Router, Update Strategy, Lookup, Stored Procedure and Sequence Generator and created mappings.
  • Develop an ETL Informatica mapping in order to load data into staging area. Extracted from flat files and databases and loaded into Oracle 11g target database.
  • Create workflows and work lets for Designed Mappings.
  • Implement logic for Slowly Changing Dimensions to handle Incremental Load for Dimension Tables and Fact Tables.
  • Write Stored Procedures and Functions to do Data Transformations and integrate them with Informatica programs and the existing applications.
  • Use Workflow Manager for Creating, Validating, Testing and Running the sequential and concurrent Batches and Sessions, scheduled them to run at a specified time.
  • Work on SQL coding for overriding for generated SQL query in Informatica.
  • 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.
  • Work on Parameterize of all variables, connections at all levels in Window XP.
  • Involve in migrating the ETL application from development environment to testing environment.
  • 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 Power Center.
  • 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.
  • Helped the company to use the Informatica Virtual Data Machine to map data integration processes once, and then deploy them to run on a workload-specific platforms within the Teradata UDA to power many type of analytics - all within a single data architecture.
  • Create UNIX shell scripts for Informatica pre/post session operations.
  • Automated the jobs using Control-M Scheduler.
  • Create VB Macro scripts in excel to interact with DB2 to produce flat files.
  • Document and present the production/support documents for the components developed, when handing-over the application to the production support team.

Confidential, Boston, MA

Informatica Prod Support Analyst

Environment: Informatica Power Center 9.1, Power Exchange, PL/SQL, Oracle 11g, SQL Server 2005/2000, Windows Server 2003, UNIX, IDQ(IDE), Autosys, Toad, Pentaho


  • Worked with Business analysts and the DBA for requirements gathering, business analysis and designing of the data warehouse.
  • Involved in creating Logical and Physical Data Models and creating Star Schema models.
  • Assisted in designing Star Schema to design dimension and fact tables.
  • Involved in developing star schema model for target database using ERWIN Data modeling.
  • Created Complex mappings using Unconnected and connected Lookups and Aggregate and Router transformations for populating target table in efficient manner.
  • Created Mapplet and used them in different Mappings.
  • Used sorter transformation and newly changed dynamic lookup.
  • Created events and tasks in the work flows using workflow manager.
  • Developed Informatica mappings and also tuned them for better performance with PL/SQL Procedures/Functions to build business rules to load data.
  • Using the data Integration tool Pentaho for designing ETL jobs in the process of building Data warehouses and Data Marts.
  • Good Experience in creating cubes by using Pentaho Schema Workbench.
  • Created Schema objects like Indexes, Views and Sequences.
  • Worked on Informatica Data Quality 9.1(IDQ) tool kit and performed data profiling, cleansing and matching and also imported data quality files as reference tables.
  • Used IDE to identify data duplication, understand the quality of data and report generation.
  • Daily production supports for the scheduled job and provide the resolution related to failed job and fixed them.
  • Created Stored Procedures, Functions and Indexes Using Oracle.
  • Worked on batch processing and file transfer protocols.
  • Prepared Batch Script to automate the ETL Load.
  • Performance tuning of the workflow which are taking time.
  • Analyzed the enhancements coming from the individual Client for application and implemented the same.
  • Creation of technical documents.
  • Developed mappings for policy, claims dimension tables.
  • Working with database connections, SQL joins, cardinalities, loops, aliases, views, aggregate conditions, parsing of objects and hierarchies.
  • Simulated real time transaction feed by fabricating transactions required for UAT and manually calculating expected results to generate expectancy going into the testing process.

Confidential, Hartford, CT

Informatica Developer

Environment: Informatica Power Center 9.1, Informatica Power Exchange, Oracle 11g, PL/SQL, SQL Server, DB2, Teradata 13.10, Clear Case, Erwin, Business Objects Info view, Windows, UNIX


  • Analyzed business requirements, technical specification, source repositories and physical data models for ETL mapping and process flow.
  • Created detailed Technical specifications for Data Warehouse and ETL processes.
  • Involved in design phase of logical and physical data model using Erwin 4.0.
  • Worked on Informatica - Source Analyzer, Warehouse Designer, Mapping Designer, Mapplet Designer and Transformation Developer.
  • Extracted/loaded data from/into diverse source/target systems like Oracle, XML and Flat Files.
  • Used most of the transformations such as the Source Qualifier, Expression, Aggregator, Filter, Connected and Unconnected Lookups, Joiner, update strategy and stored procedure.
  • Developed mappings to load Fact and Dimension tables, SCD Type I and SCD Type II dimensions and Incremental loading and unit tested the mappings.
  • Prepared low level technical design document and participated in build/review of the BTEQ Scripts, Fast Exports, Multi loads and Fast Load scripts, Reviewed Unit Test Plans and System Test cases.
  • Creating new and enhancing the existing stored procedure SQL used for semantic views and load procedures for materialized views.
  • Created BTEQ scripts to extract data from EDW to the Business reporting layer.
  • Developed BTEQ scripts for validation and testing of the sessions, data integrity between source and target databases and for report generation.
  • Loaded data from various data sources into Teradata production and development warehouse using BTEQ, FastExport, multi load and FastLoad.
  • Used Teradata Administrator and Teradata Manager Tools for monitoring and control the systems.
  • Addressed many performance issues on ETL jobs, semantic views, stored procedures, Reporting and Ad-hoc SQL.
  • Involved in creating different types of reports including OLAP, Drill Down and Summary in BO.
  • Worked in the Performance Tuning of SQL, ETL and other processes to optimize session performance.
  • Created Reusable transformations, Mapplets, Worklets using Transformation Developer, Mapplet Designer and Worklet Designer.
  • Tuned Informatica mappings to improve the execution time by applying suitable Partitioning mechanisms and tuning individual transformations inside the mapping.

Confidential, Memphis, TN

Informatica Developer

Environment: Informatica Power Center 8.6.1/8.1.1 , Oracle 11g, TOAD 10.1 for Oracle, DB2, Flat Files, PL/SQL, OBIEE 11g, SAP, ERWIN, Windows 2000, UNIX PERL scripting, Autosys


  • Designed, developed and documented the ETL (Extract, Transformation and Load) strategy to populate the Data Warehouse from the various source systems.
  • Worked only Informatica 8.6.1 client tools like Source Analyzer, Warehouse Designer, Mapping Designer, Workflow Manager and Workflow Monitor.
  • Involved in design and development of complex ETL mappings.
  • Implemented partitioning and bulk loads for loading large volume of data.
  • Based on the requirements, used various transformations like Source Qualifier, Normalize, Expression, Filter, Router, Update strategy, Sorter, Lookup, Aggregator, Joiner and Sequence Generator in the mapping.
  • Developed Mapplets, Worklets and Reusable Transformations for reusability.
  • Identified performance bottlenecks and Involved in performance tuning of sources, targets, Mappings, transformations and sessions to optimize session performance.
  • Identified bugs in existing mappings/workflows by analyzing the data flow and evaluating transformations.
  • Extracted data from SAP sources using SAP Power Connect (SAP plugin).
  • Performance tuning by session partitions, dynamic cache memory and index cache.
  • Developed Informatica SCD type-I, Type-II mappings. Extensively used almost all of the transformations of Informatica including complex lookups, Stored Procedures, Update Strategy, Mapplets and others.
  • Implemented update strategies, incremental loads, Data capture and Incremental Aggregation.
  • Created Stored Procedures in PL/SQL.
  • Created UNIX Shell scripts to automate the process.
  • Developed Documentation for all the routines (Mappings, Sessions and Workflows).
  • Involved in scheduling the workflows through Autosys Job scheduler using UNIX scripts.
  • Played a key role in all the testing phases and responsible for production support as well.


Informatica ETL Prod Support

Environment: Informatica Power Center 8.5.x, ETL, Oracle 10g, SQL Server2000, MS Access, SQL, PL/SQL, Windows NT


  • Interacted with business analysts, data architects, application developers to develop a data model.
  • Designed and developed complex aggregate, join, look up transformation rules (business rules) to generate consolidated (fact/summary) data identified by dimensions using Informatica Power Center 8.5.x tool.
  • Created sessions, database connections and batches using Informatica Server Manager/Work flow Manager.
  • Optimized mappings, sessions/tasks, source and target databases as part of the performance tuning.
  • Designed ETL Mappings and Workflows using power center designer and workflow manager.
  • Involved in the extraction, transformation and loading of data from source flat files and RDBMS tables to target tables.
  • Developed various Mappings, Mapplets and Transformations for data marts and Data warehouse.
  • Used Shell Scripting to automate the loading process.
  • Used VBA Macro excels to compare data to show proof of concept for Unit testing.
  • Used Pipeline Partitioning feature in the sessions to reduce the load time.
  • Analyzed and Created Facts and Dimension Tables.
  • Used Informatica features to implement Type I and II changes in slowly changing dimension tables.
  • Used command line program pm cmd to communicate with the server to start and stop sessions and batches, to stop the Informatica server and recover the sessions.
  • Designed processes to extract, transform and load data to the Data Mart.
  • Performed impact analysis, remedial actions and documented on process, application failures related with Informatica ETL and Power Analyzer.
  • Performed regular backup of data warehouse, backup of various production, development repositories including automating and scheduling processes. As part of optimization process, performed design changes in Informatica mappings, transformations, sessions.

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