SUMMARY

• Highly Motivated, Solutions Driven with over 7 years of Data Warehousing experience in the areas of ETL design and Development. Involved in complete Software Development life - cycle (SDLC) of various projects, including Requirements gathering, System Designing, Data modeling, and ETL design, development, Production Enhancements, Support and Maintenance.
• Excellent Interpersonal and communication skills with an ability to remain highly focused and self-assured in fast-paced and high-pressure environments.
• Extensive ETL tool experience using IBM Infosphere/Websphere DataStage, Ascential DataStage.
• Worked on DataStage tools like DataStage Designer, DataStage Director and DataStage Administrator.
• Strong understanding of the principles of Data Warehousing using fact tables, dimension tables and star/snowflake schema modeling.
• Worked extensively with Dimensional modeling, Data migration, Data cleansing, ETL Processes for data warehouses.
• Developed parallel jobs using different processing stages like Transformer, Aggregator, Lookup, Join, Sort, Copy, Merge, Funnel, CDC, Change Apply and Filter.
• Used Enterprise Edition/Parallel stages like Datasets, Change Data Capture, Row Generator and many other stages in accomplishing the ETL Coding
• Familiar in using highly scalable parallel processing infrastructure using parallel jobs and multiple node configuration files.
• Experienced in scheduling Sequence and parallel jobs using DataStage Director, UNIX scripts and scheduling tools.
• Experience in troubleshooting of jobs and addressing production issues like data issues, ENV issues, performance tuning and enhancements.
• Knowledge in using Erwin as leading Data modeling tool for logical (LDM) and physical data model (PDM).
• Extensive experience in design and development of Decision Support Systems (DSS).
• Assisted in development efforts for Data marts and Reporting.
• Technical and analytical skills with clear understanding of design goals of ER modeling for OLTP and dimension modeling for OLAP.
• Extensive experience in Unit Testing, Functional Testing, System Testing, Integration Testing, Regression Testing, User Acceptance Testing (UAT) and Performance Testing.
• Worked with various databases like Oracle 10g/9i/8i, DB2, SQL Server, Teradata.

TECHNICAL SKILLS

ETL Tools: IBM Infosphere DataStage 8.5, IBM Infosphere DataStage 8.1 (Parallel & Server), IBM Websphere DataStage 8.0.1 (Designer, Director, Administrator), Ascential DataStage 7.5.2 (Designer, Director, Administrator, Manager),Informatica 6.1

Database: Oracle 10g/9i/8i, IBM DB2/UDB, Teradata, SQL Server 2003/2005/2008.

Data Warehousing: Star & Snow-Flake schema Modeling, Fact and Dimensions, Physical and Logical Data Modeling, Erwin,Cognos

Operating systems: Windows 7x/NT/XP, UNIX, LINUX, Solaris, MS-DOS,MS Access

Languages/Scripting: C, C++, Java, D2K, Visual Basic, PL/SQL, UNIX Shell scripts

Testing/Defect Tracking: HP Quality Center, Test Director, Bugzilla

PROFESSIONAL EXPERIENCE

Confidential, Buffalo, NY

Sr. ETL Datastage Developer

Responsibilities:

• Analyzed, designed, developed, implemented and maintained Parallel jobs using IBM info sphere Data stage.
• Involved in design of dimensional data model - Star schema and Snow Flake Schema
• Generating DB scripts from Data modeling tool and Creation of physical tables in DB.
• Worked SCDs to populate Type I and Type II slowly changing dimension tables from several operational source files
• Created some routines (Before-After, Transform function) used across the project.
• Experienced in PX file stages that include Complex Flat File stage, DataSet stage, LookUp File Stage, Sequential file stage.
• Implemented Shared container for multiple jobs and Local containers for same job as per requirements.
• Adept knowledge and experience in mapping source to target data using IBM Data Stage 8.x
• Implemented multi-node declaration using configuration files (APT Config file) for performance enhancement.
• Experienced in developing parallel jobs using various Development/debug stages (Peek stage, Head & Tail Stage, Row generator stage, Column generator stage, Sample Stage) and processing stages (Aggregator, Change Capture, Change Apply, Filter, Sort & Merge, Funnel, Remove Duplicate Stage)
• Debug, test and fix the transformation logic applied in the parallel jobs
• Involved in creating UNIX shell scripts for database connectivity and executing queries in parallel job execution.
• Used the ETL Data Stage Director to schedule and running the jobs, testing and debugging its components & monitoring performance statistics.
• Experienced in using SQL *Loader and import utility in TOAD to populate tables in the data warehouse.
• Successfully implemented pipeline and partitioning parallelism techniques and ensured load balancing of data.
• Deployed different partitioning methods like Hash by column, Round Robin, Entire, Modulus, and Range for bulk data loading and for performance boost.
• Repartitioned job flow by determining DataStage PX best available resource consumption.
• Created Universes and reports in Business object Designer.
• Created, implemented, modified and maintained the business simple to complex reports using Business objects reporting module.

Environment: IBM Info sphere DataStage 8.5, Oracle 11g, Flat files, Autosys, UNIX, Erwin, TOAD, MS SQL Server database, XML files, MS Access database.

Confidential ., Milwaukee, WI

Sr. DataStage Developer/ Data Modeler

Responsibilities:

• Extensively used DataStage for extracting, transforming and loading databases from sources including Oracle, DB2 and Flat files.
• Collaborated with EDW team in, High Level design documents for extract, transform, validate and load ETL process data dictionaries, Metadata descriptions, file layouts and flow diagrams.
• Collaborated with EDW team in, Low Level design document for mapping the files from source to target and implementing business logic.
• Generation of Surrogate Keys for the dimensions and fact tables for indexing and faster access of data in Data Warehouse.
• Tuned transformations and jobs for Performance Enhancement.
• Extracted data from flat files and then transformed according to the requirement and Loaded into target tables using various stages like sequential file, Look up, Aggregator, Transformer, Join, Remove Duplicates, Change capture data, Sort, Column generators, Funnel and Oracle Enterprise.
• Created Batches (DS job controls) and Sequences to control set of jobs.
• Extensively used DataStage Change Data Capture for DB2 and Oracle files and employed change capture stage in parallel jobs.
• Executed Pre and Post session commands on Source and Target database using Shell scripting.
• Collaborated in design testing using HP Quality Center.
• Extensively worked on Job Sequences to Control the Execution of the job flow using various Activities & Triggers (Conditional and Unconditional) like Job Activity, Wait for file, Email Notification, Sequencer, Exception handler activity and Execute Command.
• Collaborated in Extraction of OLAP data from SSAS using SSIS.
• Extensively usedSAP R/3 and SAP BW packs
• Collaborated with BI and BO teams to find how reports are affected by a change to the corporate data model.
• Collaborated with BO teams in designing dashboards and scorecards for Analysis and Tracking of key business metrics and goals.
• Utilized Parallelism through different partition methods to optimize performance in a large database environment.
• Developed DS jobs to populate the data into staging and Data Mart.
• Executed jobs through sequencer for better performance and easy maintenance.
• Performed the Unit testing for jobs developed to ensure that it meets the requirements.
• Developed UNIX shell scripts to automate file manipulation and data loading procedures.
• Scheduled the jobs using AutoSys, Tivoli and Corntab.
• Collaborated in developing Java Custom Objects to derive the data using Java API.
• Responsible for daily verification that all scripts, downloads, and file copies were executed as planned, troubleshooting any steps that failed, and providing both immediate and long-term problem resolution.
• Provided technical assistance and support to IT analysts and business community.

Environment: IBM InfoSphere DataStage and QulalityStage 8.5 (Administrator, Designer, Director), IBM Information Analyzer8.0.1a, Microsoft SQL 2005/2008, IBM DB2 9.1, AIX6.0, Microsoft SQL 2008, Oracle 11g, Toad 9.5, Java, MS Access, SAP BW, SAP MDM, AS/400, shell scripts, PUTTY, WinSCP, ERWIN 4.0, HP Quality Center, Tivoli, Corntab, AutoSys.

Confidential, Newark, NJ

ETL Developer

Responsibilities:

• Provided Technical support to the team as the ETL developer. Addressed best practices and productivity enhancing issues.
• Worked on designing and developing the Quality stage.
• Loaded data into load, staging and lookup tables. Staging area was implemented using flat files.
• Created jobs in DataStage to import data from heterogeneous data sources like Oracle 9i, Text files and SQL Server.
• Generation of Surrogate IDs for the dimensions in the fact table for indexed and faster access of data in server jobs.
• Extensively worked on Job Sequences to Control the Execution of the job flow using various Activities & Triggers (Conditional and Unconditional) like Job Activity, Wait for file, Email Notification, Sequencer, Exception handler activity and Execute Command.
• Dicing and Slicing of the input data for the Business feedback. Testing of the system.
• Designing Data masking techniques to mask sensitive information when working with offshore
• Assisted Mapping team to transform the business requirements into ETL specific mapping rules.
• Enhanced various complex jobs for performance tuning.
• Responsible for version controlling and promoting code to higher environments.
• Worked on Teradata optimization and performance tuning.
• Performed Unit Testing, System Integration Testing and User acceptance testing
• Involved in ongoing production support and process improvements. Ran the DataStage jobs through third party schedulers

Environment: Ascential DataStage 7.5.2 (Designer, Manager, Director, Administrator), Oracle 9i, TOAD, SQL/PLSQL, Teradata, Erwin 4.0, UNIX (AIX).

Confidential, Southfield, MI

ETL Datastage Developer

Responsibilities:

• Worked on DataStage Designer, Manager, Administrator and Director.
• Worked with the Business analysts and the DBAs for requirements gathering, analysis, testing, and metrics and project coordination.
• Involved in extracting the data from different data sources like Oracle and flat files.
• Involved in creating and maintaining Sequencer and Batch jobs.
• Creating ETL Job flow design.
• Used ETL to load data into the Oracle warehouse.
• Created various standard/reusable jobs in DataStage using various active and passive stages like Sort, Lookup, Filter, Join, Transformer, aggregator, Change Capture Data, Sequential file, DataSets.
• Involved in development of Job Sequencing using the Sequencer.
• Used Remove Duplicates stage to remove the duplicates in the data.
• Used designer and director to schedules and monitor jobs and to collect the performance statistics.
• Extensively worked with database objects including tables, views, indexes, schemas, PL/SQL packages, stored procedures, functions, and triggers.
• Creating local and shared containers to facilitate ease and reuse of jobs.
• Implemented the underlying logic for Slowly Changing Dimensions.
• Executed Pre and Post session commands on Source and Target database using Shell scripting.
• Worked with Developers to troubleshoot and resolve issues in job logic as well as performance.
• Documented ETL test plans, test cases, test scripts, and validations based on design specifications for unit testing, system testing, functional testing, prepared test data for testing, error handling and analysis.

Environment: IBM Websphere DataStage 8.0.1, IBM AIX 5.2, Oracle 10g, XML files, Autosys, MS SQL Server database, sequential flat files, TOAD.

Confidential, Strongsville, OH

Technical Datastage Developer

Responsibilities:

• Involved in creating Table definitions, indexes, views, sequences, Materialized view creation
• Prepared documentation for addressing the referential integrity relations in between the tables at ETL level
• Redesigned the existing server jobs with a different logical approach to improve the performance
• Extensively used Ascential DataStage Designer for creating DataStage Jobs and created Shared Containers for reusability.
• Extensively used all the stages in Server Jobs like OCI, Hash File, Transformer, Sequential File, Link Partitioner, Link Collector and IPC.
• Used the DataStage Director and its run-time engine to schedule running the solution, testing and debugging its components, and monitoring the resulting executable versions (on an ad hoc or scheduled basis)
• Worked with DataStage Manager for importing metadata from repository, new job categories and creating new data elements
• Involved in designing the procedures for getting the data from all systems to Operational Data Store.
• Used Job Control routines and Transform functions in the process of designing the job.
• Worked on programs for scheduling Data loading and transformations using DataStage from DB2 to Oracle 9i using SQL* Loader and PL/SQL
• Involved in performance tuning of the ETL process and performed the data warehouse testing
• Prepared documentation including requirement specification.
• Designed XML stages for reading XML log files for capturing data stage jobs audit data.

Environment: IBM Websphere DataStage 8.1 (Parallel & Server), IBM AIX 5.2, Oracle 9i, PL/SQL,Flat files,XML files, Autosys, Clearcase, TOAD.

Confidential

DataWarehouse Consultant

Responsibilities:

• Analyzed, conceptualized/designed the database that serves the purpose of proving critical business metrics.
• Developed ETL procedures to ensure conformity, compliance with standards and lack of redundancy, translates business rules and functionality requirements into ETL procedures using Informatica - PowerMart.
• Worked with ERwin tool in Data Modeling (both Physical and Logical Design).
• Developed and documented data Mappings/Transformations, Audit procedures and Informatica sessions.
• Assisted in the design and Maintenance of the Metadata environment.
• Developed and tested all the backend programs, Informatica mappings and update processes.
• Developed various bulkload and update procedures and processes using SQL * Loader and PL/SQL.
• Involved in the error checking and testing of the ETL procedures and programs of Informatica session log.

Environment: Informatica 6.1, Oracle 9i/10g, DB2, flat files, PL/ SQL, Windows 2003 Server, UNIX (Korn Scripts), and SQL* Loader, ERwin.