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Etl Datastage Developer Resume

SUMMARY

  • Almost 8 years of experience in IT industry as an ETL developer with IBM Info Sphere, Data Stage as primary tool.
  • Experience in loading and maintaining Data Warehouses and Data Marts using Data Stage 7x/8x/11x ETL processes.
  • Extensive exposure to Star, Snowflake Schema and Multidimensional Data Models.
  • Experience in extraction, cleansing, integration, loading of data from/to disparate data sources.
  • Worked with various source systems like Oracle, SQL Server, flat files into a staging area.
  • Hands on experience in parsing the data from XML strings and files using XML stage.
  • Strong experience in developing jobs using different stages in Data Stage such as join, merge, lookup, transformer, filter, dataset, modify, aggregator and change capture and slow change dimension.
  • Expertise in data warehousing techniques for Slowly Changing Dimension phenomenon.
  • Hands on experience in writing, testing and implementation of triggers, procedures and functions at Database level using PL/SQL.
  • Extensive experience in loading high volumes of data and performance tuning.
  • Involved in various phases of software life cycle, such as requirements definition, functional and technical designs, testing, implementation and production support.
  • Avid and quick learner, always ready to learn the available tools to accomplish project tasks.
  • Excellent team member with problem - solving and trouble-shooting capabilities, highly motivated, result oriented and an enthusiastic team player.
  • Good interpersonal skills, experience in handling communication and interactions between different teams.

TECHNICAL SKILLS

ETL Tools: IBM InfoSphere Data Stage 11.3, 8.7, 8.5, 8.1, 7.5.1

Databases: Oracle 11g /10g/ 9i, SQL Server 2014/2008.

Database: ModelingIBM Insurance Information Warehouse industry data model, Microsoft VISIO.

Software: IBM InfoSphere Quality Stage, IBM InfoSphere Information Server Manager, IBM InfoSphere Metadata Workbench, IBM InfoSphere Information Governance Catalog, SQL Developer, Toad, SQL Server Management Studio, Subversion, Autosys, JIRA.

Languages: SQL, PL-SQL, Java, C, UNIX/Linux Shell Scripting

Operating System: Windows 8/7/XP, UNIX, Linux

PROFESSIONAL EXPERIENCE

Confidential

ETL DataStage Developer

Responsibilities:

  • Interacted with Business Analysts and Data Modelers for better understanding of the business and data models and the different sources and target systems.
  • Followed the IBM Insurance Information Warehouse industry data model.
  • Worked in the design of job templates (ETL patterns) to specify high-level framework approach.
  • Developed and implemented data incremental loads that constitute different subject areas for different Source Systems.
  • Designed and developed parallel jobs for loading data from the staging area to the Atomic Warehouse and from the Atomic Warehouse to the Dimensional Warehouse (dimension/fact tables).
  • Developed job sequencers to run and control the flow of jobs by subject area and target system.
  • Performed Unit testing, Integration testing and Regression testing for jobs developed to ensure that they meet the requirements.
  • Integrated parameter sets and environment variables in the development of jobs and followed job flows, audit processes and strategies established by the ETL development team.
  • Used extensively different stages such as Transformer, Change Capture, Slow Change Dimension, Shared containers, Remove Duplicates, Funnel, Look Up, Sort, Data Sets, ODBC Connector among others.

Environment: InfoSphere Information Server 11.3 Suite (DataStage and QualityStage, Director, Information Governance Catalog, Information Server Manager), SQL Server 2014, SQL Server Management Studio 2014, Windows 7, UNIX.

Confidential

ETL DataStage Developer

Responsibilities:

  • Worked closely with Data Architects, Business Analysts and DBAs on the business requirements.
  • Created new ETL jobs (Sequence jobs, Parallel jobs) based on the requirements and mapping documents.
  • Adapted existing ETL jobs (Sequence jobs, Parallel jobs) according to the requested changes.
  • Worked with standardized job parameters, environment variables, job flows, audit processes and strategies established by the development team and data warehouse policies.
  • Performed unit testing and debugging of ETL jobs to ensure that requirements were met.
  • Analyzed the data loaded into data marts to verify and validate that data was processed and loaded correctly.
  • Applied validation rules and constraints using data stage variables and transformations.
  • Used several stages like Sequential file, Dataset, Transformer, Join, Funnel, Sort, Remove Duplicates, Lookup, Oracle Enterprise/Connector, XML stage among others during the development process of the DataStage jobs.
  • Coded UNIX shell scripts wrappers for ETL processes (calling DataStage jobs).
  • Created JIL scripts for control and automation of ETL processes in Autosys.
  • Managed the metadata repository of the different information assets including the configurations of Subversion as a source code control management system.
  • Reviewed and updated production support documentation for ETL processes.
  • Provided support for data quality investigations, problem investigations, fixes, job failures, job/SQL performance improvements.

Environment: InfoSphere Information Server 8.7 Suite (DataStage and QualityStage, Director, MetadataWorkbench, Information Server Manager), Oracle 11g, SQL Developer, Windows 7, UNIX.

Confidential

DataStage Developer

Responsibilities:

  • Reviewed and updated technical specification documents for ETL process.
  • Developed standard ETL processes to execute pre-ETL and post-ETL processes to ensure smooth transfer of data from heterogeneous source systems to a homogenous target system.
  • Involved in developing server and parallel jobs for Source to Stage, Stage to ADS (Atomic Data Store) and ADS to Datamarts.
  • Designed Job Sequencers for every project to run in a loop based on the success or failure of individual jobs in the Sequencer.
  • Performed the Unit testing for developed jobs to ensure that the requirements were met.
  • Worked closely with team lead in process of standardizing job parameters, job flows, audit process and rollback strategies that hold major attention for the successful implementation of DW Incremental.
  • Conducted detailed data analysis using Information Analyzer for the multiple sources from various systems.
  • Used Quality Stage to coordinate the delivery, consistency, removing data anomalies and spelling errors of the source information.
  • Defined and documented the required data validation rules on the source feed files that were used in ETL.

Environment: InfoSphere Information Server 8.1/8.5, Oracle 10g, SQL Server 2005, Shell Scripts, Windows XP, UNIX.

Confidential, Cleveland, OH

DataStage Developer

Responsibilities:

  • Translated Functional requirements into technical requirements. Designed the ETL Process flow between the source and target.
  • Designed the mapping between the source and target columns.
  • Used Data stage Designer to extract, cleanse, transform, integrate and load data into the target Oracle tables.
  • Designed the ETL Transformation logic for translating the source data.
  • Customized UNIX scripts as required for preprocessing steps and to validate input and output data elements, along with DataStage routines.
  • Developed job sequences with restart ability, check points and implemented proper failure actions.
  • Worked on ETL enhancements and bug fixes as required through proper release process.
  • Interacted with Business Analysts Functional requirements and for change requests.
  • Created promotion code request forms with user-defined environment variables exported jobs, project folders etc. and passed them to ETL administrator for elevation.
  • Created Error Files and Log Tables containing data with discrepancies to analyze and re-process the data.

Environment: IBM InfoSphere Information Server 8.1, Shell Scripts, Windows XP, UNIX.

Confidential

Datastage Developer

Responsibilities:

  • Participated in discussions with Project Manager, Business Analysts and Team members on different Business Requirement issues.
  • Worked on the existing documents and developed the required technical specification as per the business needs.
  • Worked on extracting data from Flat files, SQL Server and Oracle databases.
  • Designed ETL jobs by identifying various source files and applying transformations and ETL logic to them.
  • Used Toad to create and edit database objects such as tables, views, indexes, constraints etc.
  • Developed various jobs using stages like Transformer, Lookup, Datasets, Funnel, Change Capture stage, Change Apply stage and ODBC stage among others.
  • Mapped Data Items from Source Systems to the Target System.
  • All the jobs were migrated from development to production using DataStage Manager.
  • Validation of all the metrics was done in advance before migration to production environment.
  • Monitored all the metrics in the production and worked on the issues raised.
  • Used Data Stage Director and its run-time engine to schedule running the solution, testing and debugging its components, and monitoring the resulting executable versions.
  • Developed UNIX Shell Scripts to trigger the Data Stage jobs through a Master Sequencer and to automate data loading in batch mode.
  • Used control-M to schedule the jobs based on prerequisites in and dependencies out of the jobs.
  • Participated in the meetings with the teammates, project manager and the end users

Environment: Ascential Data Stage, Oracle.

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