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Deepak Sharma_ETL_Programmer_2016

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Deepak Sharma

Deepak Sharma has over 9 years of experience as an ETL programmer focusing on data warehousing, data integration, and business intelligence. He has expertise in designing, developing, and implementing data warehouse/data integration solutions using tools like Informatica PowerCenter and Oracle. Some of his responsibilities include interacting with business stakeholders to understand requirements, designing mappings, developing ETL processes, testing solutions, and supporting production environments. He currently works as a senior ETL developer at Bank of America on their Corporate Investment Data Warehouse.

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Deepak Sharma Phone: +1-323-215-5948 Email: s.deepak84@gmail.com Executive Summary  Seasoned ETL Programmer almost 9 years of Software Development (ETL/Business Intelligence) experience in focusing on Data warehousing, Data modelling (3NF, Dimension, ER), Data integration, Data Virtualization, Data Migration, ETL process and Business Intelligence in Banking domain on various commercial and retail Lending Products.  Strong experience in Architect, Designing, Building and Implementing Data Warehousing/Data Virtualization/Business Intelligence Products/Prototypes/POC using Informatica Power Center 8.x/9.x/Power Exchange with Mainframe/SQL Server, Informatica Data Services and Business Objects.  Highly skilled on using effective SDLC methodologies like Waterfall & Agile/Scrum based upon Business Requirements, Implementation Schedule and Resource availability.  Drawing on Experience in all aspects of Software Development (Data Warehouse/Business Intelligence) solutions (Database issues, Data modeling, Data mapping, ETL Development, metadata management, data migration and reporting solutions). I have been a key resource in delivering innovative DW- BI solutions to the Union Bank for Credit Risk Reporting.  Knowledge of Key Credit Risk Reports/Calculations like Allowance for Credit Losses (ACL), Loss Factors, Balance Control Summary, Delinquencies, Charge-off , Credit Policy Exception and various other Loan Level Reports.  Expertise in large scale data integration as part of Union Bank’s multiple Acquisitions.  Strong Experience on working with Business/Data Analysts and other Technology Partners to identify and understand Reporting/Data requirements and translated them into High Level and Detailed (Source to Target) Design documents.  Elucidated requirements from End Users/Stake Holders and translated them into High/Low Level Design Documents & ETL Programs to deliver the same.  Possess strong and trust worthy relationship with Business and Technology Partners by working hand in hand and delivering quality solutions.  Proficient in interaction with the business users by conducting meetings throughout the entire SDLC process to ensure smooth delivery of solutions.  Well versed in developing and understanding the complex SQL queries, unions and multiple table joins and experience with Normal/Materialized Views.  Strong knowledge of Data Architecture using Entity-Relationship modelling, Facts and dimensions tables, slowly changing dimensions and Dimensional Modeling (Star Schema and Snow Flake Schema).  Highly Skilled on writing SQL queries to validate data, Fixes, Data Quality Issues etc.  Quality coding skills that promotes reusability, maintainability and good, scalable performance.
 Extensively worked on Data extraction, Transformation and Integration from various sources like Oracle, SQL Server, DB2 and Flat files.  Extensively involved in Optimization and Tuning of mappings and sessions in Informatica by identifying and eliminating bottlenecks, memory management and parallel threading.  Expertise in Business Model development with Dimensions, Hierarchies, Measures, Partitioning, Aggregation Rules, Time Series, Cache Management.  Extensively worked on data extraction, Transformation and loading data from various sources like Oracle, SQL Server and Flat files.  Experience in creating Reusable/Non Re-usable Transformations (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank), Mapplets and Mappings using Informatica Designer and processing tasks/Sessions/Worklets/Workflows using Workflow Manager to move data from multiple sources into targets.  Strong Experience in evaluating/POC MPP platforms like Exadata, GreenPlum and Data Virtualization Engines like Informatica Data Services.  Highly skilled in writing and executing Efficient and effective Test Strategy, Test Cases and Test Scripts to ensure quality data.  Experienced in writing shell/Unix scripting on Unix/Linux platforms to call ETL jobs, to perform file transfers using FTP & SFTP.  Highly skilled in scheduling ETL jobs using Shell Scripts on Industry standard Job Scheduling Tools like Autosys and Tivoli.  Strong Experience in Defect Management/Application Life Management using HP Quality Center/ALM.  Hands on Experience in Informatica Administration involved in Admin Console, Repository Manager, User & Group Creation, Identify Session Locks and Killing Long Running Session and performing Upgrades when moving from current version to latest version.  One of key expert of the existing Union Bank Data warehouse having approximate size of 20 TB data and Credit Risk data marts of around 3-5 TB. Data warehouse hold more than 700 tables with combination of CDC of 1 and 2 and Data Mart has around 300 tables.  Passionate about leaning and implementing new Software Development technologies/products like Big Data, Hive, Python, Hadoop, Composite, MDM etc.  Via Repository Manager done Export, Import, Copy Metadata Objects and Reports through Metadata Repository Database.  Experience with coordinating and leading onsite-offshore development.  Excellent team player with very good communication, Inter Personal/People and leadership skills/qualities.  Experience in working with cross-functional teams. Key Accomplishments  Awarded with iGATE one of the most prestigious “R&R Award” in individual category for great contribution to the project.  Awarded thrice with “PAT on Back” award for contribution of multiple applications over the period.  Awarded “Best IT Professional” by Union Bank for resolving more than 300 change request and incident management tickets over the years.  Achieved 5 promotions over the period of 8 years as part of annual performance review process in IGATE.
Academics  Bachelor of Engineering (B.E), Electronics and Communications (2002-2006), Prabhu Dayal Memorial College of Engineering, Bahadurgarh, India (With Honors). Technical Skills  ETL Tools: Informatica Data Services 9.x (Data Virtualization), Informatica Power Center 7.x/8.x/9.x, Informatica Power Exchange 8.x  Reporting Tools: Learner on Business Objects XI 3.1  Programming Language: SQL, PL/SQL, Shell/Unix Scripting, C++, ANSI SQL  Job Scheduling Tools: Autosys, Tivoli Workflow Scheduler  RDBMS: Oracle 9i/10g/11g, SQL Server 2008 R2/ 2008/2005, 7.0, MS-Access, DB2, Postgres, DB2  Meta Data Management: Meta Center  Data Modeling: Logical Modeling, Physical Modeling, Relational Modeling, ER Diagrams, Dimensional Data Modeling (Star Schema Modeling, Snowflake Schema Modeling, FACT and Dimensions Tables), Entities, Attributes, Cardinality, MS Visio  MPP Platform: GreenPlum 1.16.1  Version Management: Microsoft Integrity Client, Team Foundation Server, Perforce  Operating System: Unix/Linux, Windows  Data Quality: HP Quality Center  Scripting: Shell, Perl  Agile Management Tools: Version One  Incident Management: HP Service Manager (Peregrine)  Project Management: Microsoft Project Planner  Other Tools: TOAD 9/10.0, pgAdmin 1.16.1, SSH Client, SQL workbench, Visio, Microsoft Office Suite, WinScp, Tectia Professional Experience Summary Bank of America, Charlotte, NC-USA (August 2015 – Present): Corporate Investment Data warehouse (CIDW): CIDW represents trade level data, both intraday and end of day, and can be aggregated at a trading book and portfolio level for Corp Investments & Corp Treasury. CIDW provisions data to Quantitative Finance (QF) to generate reports as well run different financial models on provisioned data. CIG COO leverages this data as well for desk and regulatory reporting purposes. CIDW also maintains and provisions QF enhance data to Front Desk for trading purposes and within the limits of their entitlements and capabilities of the respective product and channel. CIDW is a “line of business” Oracle data warehouse with trading books and portfolio information for:  Corporate Investments (AFS, HTM, MTM ALM, SecondaryMarketing, MSR & Economic hedges)  Corporate Treasury(L/T Debt, Debt hedges,Funding,Liquidity,IntercompanyLoans)
Within those trading books, we collect and make available to downstream users:  Positions/Holdings  Transactions  Income earned (interest accruals,FAS 91 amortization/accretion and FX)  Collateral  Capital  NII/OCI  Risk CIDW is an agile shop which follows a sprint with a cycle of 2 weeks. We have releases every alternative weekend. Each task in the project is translated into a story and story requires grooming with all stake holders on round table. Story is being assigned to sprint and developer has to make sure a given story once agreed should be completed in a given sprint in ideal conditions. Roles and Responsibilities (Sr. ETL Developer):  Work with Business Analysts to understand and translate the business requirement document into detailed and Low level design documents/Mapping specification document.  Fine tune mapping specification documents to add the detailed transformation logic.  Conduct Impact and feasibility analysis on current process for the upcoming change.  Develops detailed analysis, design (Source to Target Mapping Specifications), construction and testing specifications ensuring technical compatibility and integration.  Create data flow diagrams for the data users.  Perform Test Driven Quality ETL Development by Creating Test Plans, Test Cases, and Test Scripts for all testing events such as Unit Testing (DUT), System Integration Testing (SIT), and User Acceptance Testing (UAT).  Ensure Quality Software Development using standard and mappings and with various transformations like Expression, Aggregator, Joiner, Router, Sorter, SQL Transformation, Normalizer, Lookup (Connected and Unconnected) and Filter using Informatica Power Center 9.x.  Follow the agile methodology to track and complete the assigned stories in a given sprint.  Perform automation of File loads using dynamic perl and Autosys framework developed at bank.  Create Reusable and Common Transformations/Mapplets (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank) and Mappings using Informatica Designer and processing tasks/sessions/worklet using Workflow Manager to move data from multiple sources into targets using Informatica Power Center 9.x.  Validate and reconcile GL and Trade Level Notional amounts as part of Dollar reconciliation process.
 Implement Change Data Capture Logic (CDC-1/2/3/6) by tracking the changes in critical fields required by the user and demanded by data model using Informatica Power Center 8.x/9.x.  Create module wise Detailed Unit test Cases covering all possible scenarios and execute them on completion of specific set of ETL module.  Participate on the routine production support calendar for 2 weeks every alternative month and support all production jobs in case of any issue or failure.  Job scheduling using TWS and Autosys schedulers using perl scripts.  Performance tuning of long running etl jobs. Union Bank (MUB), Monterey Park, CA-USA (July 2008 – July 2015): Integrated Credit Reporting System (ICRS): The Integrated Credit Reporting System is an OLAP system that provides Decision Support for the Credit Management group of the Bank. This Data Mart sources data from the Enterprise Data Warehouse and coexistent systems of the Bank and follows Data warehousing design fundamentals. The users can generate, create and broadcast reports through Business Objects which is the preferred front-end or analytical tool. Below are some of the key projects delivered while working in the application: 1. Informatica Upgrades (7.x to 8.x and 8.x to 9.x) 2. Oracle Upgrades (9t to 10g, 10g to 11g) 3. Tivoli to Autosys Upgrade 4. D2M Decoupling 5. SIL to AFS Conversion 6. MSS to MSP Conversion 7. GL to People Soft Conversion 8. TAM/FRONTIES/SBBT Acquisitions 9. Integration of Credit Risk Reporting for UB and BTMU. 10. Integration of OREO and LSBO portfolio 11. Consumer Credit Card Integration 12. Consumer Credit Card Integration 13. AFS to ACBS Conversion 14. Analyzed and Resolved 500+ Incident Management Tickets 15. Ongoing Production Issues/Business queries Centralized Data warehouse (CDW): CDW is the centralized data repository enterprise data comprising data from variety of OLTP systems like AFS, ELS, IBG, PPX, DDA, MSP, GL, HR etc. CDW is modeled in 3NF to serve the data requirements of various Credit oriented application and marts across bank. CDW has this normalized data spread across 100s of type 1 and type 2 data which provides the holistic view of Whole sale and retail exposures of the bank and capable of serving any reporting need for wholesale or retail portfolio of the bank. Operational Data Store (ODS):
It is a type of database that's often used as an interim logical area for a data warehouse. While in the ODS, data can be scrubbed, resolved for redundancy and checked for compliance with the corresponding business rules. ODS is the 1st generation Enterprise data warehouse which loaded data to small data marts. ODS gets data from EBCDIC Flat files, cleans if and keeps it ready to load to CDW Roles and Responsibilities (Sr. ETL Lead/Data Engineer):  Interact with the Business users to identify and document Business and Data requirements for software development.  Develop FRD (Functional requirement/Design Document) and data architecture document by working closely with Business Community and other technology partners using Agile and Waterfall SDLC methodologies.  Responsible to conduct Impact and feasibility analysis on current and future pipeline projects on ICRS data mart.  Scrutinize functional requirements, specifications and source to target mapping documents, identifying underspecified requirements and other design challenges in order to ensure smooth SDLC processing to support business strategy and deliver quality business reporting.  Develops detailed analysis, design (Source to Target Mapping Specifications), construction and testing specifications ensuring technical compatibility and integration.  Create data flow diagrams, System Architecture Diagrams, data mapping documents from Source to stage and Stage to Target mapping documents indicating the source tables, columns, data types, transformations required and business rules to be applied.  Responsible for all driving SDLC activities related to architecture, design, development, implementation, administration and support of ETL processes for large scale data warehouses using Informatica Power Center 8.x/9.x and Oracle by taking other team members together.  To Perform Source system analysis (SSA) to identify the source data that needs to be moved into the target tables.  To Ensure Test Driven Software Development by Creating Test Plans, Test Cases, and Test Scripts for all testing events such as Unit Testing (DUT), System Integration Testing (SIT), and User Acceptance Testing (UAT).  Ensure Quality Software Development using standard and mappings and with various transformations like Expression, Aggregator, Joiner, Router, Sorter, SQL Transformation, Normalizer, Lookup (Connected and Unconnected) and Filter using Informatica Power Center 8.x/9.x.  Create Reusable and Common Transformations/Mapplets (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank) and Mappings using Informatica Designer and processing tasks/sessions/worklet using Workflow Manager to move data from multiple sources into targets using Informatica Power Center 8.x/9.x.  Responsible for creating data base objects like Tables, Synonyms, Indexes, Views, Triggers, Stored Procedure, Functions, Grants using SQL using Toad.
 Validate and reconcile GL and LOAN data on daily basis using complex SQL and automated application (BRC) on daily basis.  Create and Implement Confirmed Dimension, FACTS, Aggregate, Rules and Static Tables as part of Dimension Modelling using Star Schema.  Assist BI Team in analyzing and resolving reporting data issues, hand=on experience in developing adhoc repots using Business Objects.  Implement Change Data Capture Logic (CDC-1/2/3/6) by tracking the changes in critical fields required by the user and demanded by data model using Informatica Power Center 8.x/9.x.  Perform Unit and Peer Code reviews for offshore team members to ensure accuracy.  Extensive use of Persistent cache to reduce session processing time.  Responsible for defining and Maintaining best practices, Coding standards and review checklist for Informatica Power Center 8.x/9.x and Oracle Development for onshore and offshore team members.  Create Workflows/Worklets using various tasks like Email, Scheduler, Control, Decision, and Session in the workflow manager.  Made use of Post-Session success and Post-Session failure commands in the Session task to execute scripts needed for cleanup and update purposes.  Responsible for maintaining data lineage for all KDE (Key Data Elements) in meta center  Perform root cause analysis for production issues and identify the short term and long term fix (SQL or ETL) in limited amount of time using Toad and Reporting Tool (Business Objects).  Support Production Environment on 24/7 basis.  Resolving issues related to Enterprise data warehouse (EDW), stored procedures in OLTP system and analyzed, design and develop ETL strategies.  Implement automated file transfer process using Secure and Non Secure file transmission methods like SFTP and FTP.  Creating Validation SQL for Data comparison and equivalence as per client Requirement using Toad.  Using UNIX shell script to send mail if there is any failure without any Manual intervention.  Troubleshooting of long running sessions and fixing the issues related to it.  Creating Deployment group whenever we have project release. Used to move the code from one environment to another environment, cleansing the unwanted files as part of Informatica Administration.  Support application development through system testing and user accept ance testing, bridging gap between business rules and technical implementation when necessary  Defect management using HP Quality Center/ALM.  Development of Shell Scripts to evoke the ETL jobs via Autosys Scheduler.  Job scheduling using TWS and Autosys schedulers using shell scripts.  Involved in Performance/ Query tuning. Generation /interpretation of explain plans and tuning SQL to improve performance using session partitioning, SQL override tuning, persistent caching, session re-arrangement.
 Involved in admin tasks like analyzing Table space requirement, load balancing and performance.  Mentoring and assisting new joiners and existing team members by preparing Knowledge Transfer documents and Group meetings. Roles and Responsibilities (Informatica Administrator):  Responsible for maintaining coding standards like .i.e. Folder Names, Mapping names, sessions names, transformation names, workflow names, parameter file names, shell scripts names etc.  Creating, Managing Informatica Repositories, Users, folders and their respective permission and usage.  Responsible for tasks such as Repository Creation, Export & Import the objects, Adding Group, Users based on permission, Unlocks the User id and Killing long running session as per user request.  Troubleshooting of long running sessions and fixing the issues related to it.  ETL or Shell Script migration across ENV (.i.e. DEV to SIT, SIT to UAT and UAT to PRD).  Managing informatica Users working closely with Database Administrators, password changes for informatica users.  Killing the object level locks across repositories.  Monitoring the loads (Workflows) whether the loads are scheduled to respective timings.  Recover and restart informatica jobs in case of any load recovery.  Identifying the tardiness in loading process in case of any sessions are in hug status. 2. Union Bank Virtual Data Hub (VDH): Union Bank Virtual data hub is built on data virtualization principles (Data virtualization is any approach to data management that allows an application to retrieve and manipulate data without requiring technical details about the data, such as how it is formatted or where it is physically located.) using Informatica Data Services. VDH provides aggregate view of complete data inventory spread across multiple data warehouses, data marts and various OLTP applications and allow fast and direct access to these data sources for data integration projects. It has capability to deliver a current, Complete, Trusted view of the business within days by leveraging a single environment for data integration. Roles and Responsibilities (Data Virtualization Architect):  Working with business users and business analyst to elicitate Business and Data requirements and perform requirement analysis.  Translate business requited to high level and low level design documents and prepare S2T documents for team to write the data extraction programs using
Informatica Data Services (Data Virtualization) using Agile/Scrum SDLC Method.  Developed Logical and Physical data models that capture current state/future state data elements and data flows.  Identify Source, Stage, Cleansing, Transformation and Presentation layer as part of Data Virtualization Framework.  Use Informatica Data Services (Data Virtualization) to create the physical data objects, Logic data objects, logical data models, Mappings, workflows, reusable transformations, SQL data Services and applications.  Responsible for maintaining Data Integration services and Caching for IDS objects.  Responsible for maintaining the repository and integration services.  Setup data services and ODBC connections for users to use the SQL data services for data analytics in Microsoft Excel, Business Objects, Toad Data Point as part of Administration activities.  Creating Database (Oracle, SQL Server, and ODBC) connectors on DIS or Informatica data services.  Develop optimized IDS programs to achieve push down optimization for better performance.  Maintaining Logical Data Object Caches on Oracle Database, Setting Up Caching Interval etc.  Ensure Load Balancing on DIS by monitoring long running and unwanted processes from multiple users as part of Administration activities.  Write Shell/Unix Scripts to call the DIS jobs on Autosys to perform automation for data extraction.  Apply and refine established ETL development standards and coordinating teams of ETL developers (typically 2 to 5) across multiple projects.  Mentoring and assisting new joiners and existing team members by preparing Knowledge Transfer documents and Group meetings.  Perform code reviews to ensure quality coding and data.  Develop and implement processes to improve and increase project efficiency.  Validates and Review the Test Plans and Test Scenarios, Test Cases; verify Test Results to ensure test driven software development.  Performance tuning of IDS objects in case of any bottlenecks.  Defect management using HP Quality Center. US Bank, CA-USA (June 2007 – June 2008) 1. Power Track DW-BI Reporting Solution: U.S. Bank Power Track is the world’s largest freight payment solutions provider and is a clear industry leader with an unmatched set of offerings in the market place. As U.S. Bank Power Track continues to evolve as a world-class leader in the payment and supply chain marketplace, it will need new product offerings and identify new revenue streams based on its BI strategy. The DW & BI solution project will help U.S. Bank Power Track overcome the shortcomings of the existing system, remove the dependency on Schneider National Data Warehousing services and drive business growth. IGATE developed a new Data Warehouse with components that will include an Operation Data
store (ODS)/Staging, an Enterprise Warehouse and Subject Specific Data Marts. Roles and Responsibilities (ETL Developer):  Used Informatica Power Center for (ETL) extraction, transformation and loading data from heterogeneous source systems into target database.  Created mappings using Designer and extracted data from various sources, transformed data according to the requirement.  Involved in extracting the data from the Flat Files and Relational databases into staging area.  Mappings, Sessions, Workflows from Development to Test and then to UAT environment.  Developed Informatica Mappings and Reusable Transformations to facilitate timely Loading of Data of a star schema.  Developed the Informatica Mappings by usage of Aggregator, SQL overrides usage in Lookups, source filter usage in Source qualifiers, and data flow management into multiple targets using Router.  Created Sessions and extracted data from various sources, transformed data according to the requirement and loading into data warehouse.  Developed several reusable transformations and mapplets that were used in other mappings.  Involved in Unit Testing and Resolution of various Bottlenecks came across.  Implemented various Performance Tuning techniques.  Created PL/SQL Stored procedures and implemented them through the Stored Procedure transformation.  Used debugger to debug mappings to gain troubleshooting information about data and error conditions.  Implemented the Incremental loading of Dimension and Fact tables.  Develop, test and implement break/fix change tickets for maintenance.  Created sequential batches and concurrent batches for sessions.  Developed Interfaces using UNIX Shell Scripts to automate the bulk load & ‘ Update Processes using scheduling tools like Tivoli and Autosys.  Execute Test Cases and Capture Test results.  Migrated mappings/sessions/worklets/workflows from Development to Testing and from Testing to Production.  Developed local and global parameter files for ETL programs to support ETL batches for dynamic execution.  Created various Documents such as Source-to-Target Data mapping Document, and Unit Test Cases Document. References Available on request.

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Deepak Sharma_ETL_Programmer_2016

  • 1. Deepak Sharma Phone: +1-323-215-5948 Email: s.deepak84@gmail.com Executive Summary  Seasoned ETL Programmer almost 9 years of Software Development (ETL/Business Intelligence) experience in focusing on Data warehousing, Data modelling (3NF, Dimension, ER), Data integration, Data Virtualization, Data Migration, ETL process and Business Intelligence in Banking domain on various commercial and retail Lending Products.  Strong experience in Architect, Designing, Building and Implementing Data Warehousing/Data Virtualization/Business Intelligence Products/Prototypes/POC using Informatica Power Center 8.x/9.x/Power Exchange with Mainframe/SQL Server, Informatica Data Services and Business Objects.  Highly skilled on using effective SDLC methodologies like Waterfall & Agile/Scrum based upon Business Requirements, Implementation Schedule and Resource availability.  Drawing on Experience in all aspects of Software Development (Data Warehouse/Business Intelligence) solutions (Database issues, Data modeling, Data mapping, ETL Development, metadata management, data migration and reporting solutions). I have been a key resource in delivering innovative DW- BI solutions to the Union Bank for Credit Risk Reporting.  Knowledge of Key Credit Risk Reports/Calculations like Allowance for Credit Losses (ACL), Loss Factors, Balance Control Summary, Delinquencies, Charge-off , Credit Policy Exception and various other Loan Level Reports.  Expertise in large scale data integration as part of Union Bank’s multiple Acquisitions.  Strong Experience on working with Business/Data Analysts and other Technology Partners to identify and understand Reporting/Data requirements and translated them into High Level and Detailed (Source to Target) Design documents.  Elucidated requirements from End Users/Stake Holders and translated them into High/Low Level Design Documents & ETL Programs to deliver the same.  Possess strong and trust worthy relationship with Business and Technology Partners by working hand in hand and delivering quality solutions.  Proficient in interaction with the business users by conducting meetings throughout the entire SDLC process to ensure smooth delivery of solutions.  Well versed in developing and understanding the complex SQL queries, unions and multiple table joins and experience with Normal/Materialized Views.  Strong knowledge of Data Architecture using Entity-Relationship modelling, Facts and dimensions tables, slowly changing dimensions and Dimensional Modeling (Star Schema and Snow Flake Schema).  Highly Skilled on writing SQL queries to validate data, Fixes, Data Quality Issues etc.  Quality coding skills that promotes reusability, maintainability and good, scalable performance.
  • 2.  Extensively worked on Data extraction, Transformation and Integration from various sources like Oracle, SQL Server, DB2 and Flat files.  Extensively involved in Optimization and Tuning of mappings and sessions in Informatica by identifying and eliminating bottlenecks, memory management and parallel threading.  Expertise in Business Model development with Dimensions, Hierarchies, Measures, Partitioning, Aggregation Rules, Time Series, Cache Management.  Extensively worked on data extraction, Transformation and loading data from various sources like Oracle, SQL Server and Flat files.  Experience in creating Reusable/Non Re-usable Transformations (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank), Mapplets and Mappings using Informatica Designer and processing tasks/Sessions/Worklets/Workflows using Workflow Manager to move data from multiple sources into targets.  Strong Experience in evaluating/POC MPP platforms like Exadata, GreenPlum and Data Virtualization Engines like Informatica Data Services.  Highly skilled in writing and executing Efficient and effective Test Strategy, Test Cases and Test Scripts to ensure quality data.  Experienced in writing shell/Unix scripting on Unix/Linux platforms to call ETL jobs, to perform file transfers using FTP & SFTP.  Highly skilled in scheduling ETL jobs using Shell Scripts on Industry standard Job Scheduling Tools like Autosys and Tivoli.  Strong Experience in Defect Management/Application Life Management using HP Quality Center/ALM.  Hands on Experience in Informatica Administration involved in Admin Console, Repository Manager, User & Group Creation, Identify Session Locks and Killing Long Running Session and performing Upgrades when moving from current version to latest version.  One of key expert of the existing Union Bank Data warehouse having approximate size of 20 TB data and Credit Risk data marts of around 3-5 TB. Data warehouse hold more than 700 tables with combination of CDC of 1 and 2 and Data Mart has around 300 tables.  Passionate about leaning and implementing new Software Development technologies/products like Big Data, Hive, Python, Hadoop, Composite, MDM etc.  Via Repository Manager done Export, Import, Copy Metadata Objects and Reports through Metadata Repository Database.  Experience with coordinating and leading onsite-offshore development.  Excellent team player with very good communication, Inter Personal/People and leadership skills/qualities.  Experience in working with cross-functional teams. Key Accomplishments  Awarded with iGATE one of the most prestigious “R&R Award” in individual category for great contribution to the project.  Awarded thrice with “PAT on Back” award for contribution of multiple applications over the period.  Awarded “Best IT Professional” by Union Bank for resolving more than 300 change request and incident management tickets over the years.  Achieved 5 promotions over the period of 8 years as part of annual performance review process in IGATE.
  • 3. Academics  Bachelor of Engineering (B.E), Electronics and Communications (2002-2006), Prabhu Dayal Memorial College of Engineering, Bahadurgarh, India (With Honors). Technical Skills  ETL Tools: Informatica Data Services 9.x (Data Virtualization), Informatica Power Center 7.x/8.x/9.x, Informatica Power Exchange 8.x  Reporting Tools: Learner on Business Objects XI 3.1  Programming Language: SQL, PL/SQL, Shell/Unix Scripting, C++, ANSI SQL  Job Scheduling Tools: Autosys, Tivoli Workflow Scheduler  RDBMS: Oracle 9i/10g/11g, SQL Server 2008 R2/ 2008/2005, 7.0, MS-Access, DB2, Postgres, DB2  Meta Data Management: Meta Center  Data Modeling: Logical Modeling, Physical Modeling, Relational Modeling, ER Diagrams, Dimensional Data Modeling (Star Schema Modeling, Snowflake Schema Modeling, FACT and Dimensions Tables), Entities, Attributes, Cardinality, MS Visio  MPP Platform: GreenPlum 1.16.1  Version Management: Microsoft Integrity Client, Team Foundation Server, Perforce  Operating System: Unix/Linux, Windows  Data Quality: HP Quality Center  Scripting: Shell, Perl  Agile Management Tools: Version One  Incident Management: HP Service Manager (Peregrine)  Project Management: Microsoft Project Planner  Other Tools: TOAD 9/10.0, pgAdmin 1.16.1, SSH Client, SQL workbench, Visio, Microsoft Office Suite, WinScp, Tectia Professional Experience Summary Bank of America, Charlotte, NC-USA (August 2015 – Present): Corporate Investment Data warehouse (CIDW): CIDW represents trade level data, both intraday and end of day, and can be aggregated at a trading book and portfolio level for Corp Investments & Corp Treasury. CIDW provisions data to Quantitative Finance (QF) to generate reports as well run different financial models on provisioned data. CIG COO leverages this data as well for desk and regulatory reporting purposes. CIDW also maintains and provisions QF enhance data to Front Desk for trading purposes and within the limits of their entitlements and capabilities of the respective product and channel. CIDW is a “line of business” Oracle data warehouse with trading books and portfolio information for:  Corporate Investments (AFS, HTM, MTM ALM, SecondaryMarketing, MSR & Economic hedges)  Corporate Treasury(L/T Debt, Debt hedges,Funding,Liquidity,IntercompanyLoans)
  • 4. Within those trading books, we collect and make available to downstream users:  Positions/Holdings  Transactions  Income earned (interest accruals,FAS 91 amortization/accretion and FX)  Collateral  Capital  NII/OCI  Risk CIDW is an agile shop which follows a sprint with a cycle of 2 weeks. We have releases every alternative weekend. Each task in the project is translated into a story and story requires grooming with all stake holders on round table. Story is being assigned to sprint and developer has to make sure a given story once agreed should be completed in a given sprint in ideal conditions. Roles and Responsibilities (Sr. ETL Developer):  Work with Business Analysts to understand and translate the business requirement document into detailed and Low level design documents/Mapping specification document.  Fine tune mapping specification documents to add the detailed transformation logic.  Conduct Impact and feasibility analysis on current process for the upcoming change.  Develops detailed analysis, design (Source to Target Mapping Specifications), construction and testing specifications ensuring technical compatibility and integration.  Create data flow diagrams for the data users.  Perform Test Driven Quality ETL Development by Creating Test Plans, Test Cases, and Test Scripts for all testing events such as Unit Testing (DUT), System Integration Testing (SIT), and User Acceptance Testing (UAT).  Ensure Quality Software Development using standard and mappings and with various transformations like Expression, Aggregator, Joiner, Router, Sorter, SQL Transformation, Normalizer, Lookup (Connected and Unconnected) and Filter using Informatica Power Center 9.x.  Follow the agile methodology to track and complete the assigned stories in a given sprint.  Perform automation of File loads using dynamic perl and Autosys framework developed at bank.  Create Reusable and Common Transformations/Mapplets (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank) and Mappings using Informatica Designer and processing tasks/sessions/worklet using Workflow Manager to move data from multiple sources into targets using Informatica Power Center 9.x.  Validate and reconcile GL and Trade Level Notional amounts as part of Dollar reconciliation process.
  • 5.  Implement Change Data Capture Logic (CDC-1/2/3/6) by tracking the changes in critical fields required by the user and demanded by data model using Informatica Power Center 8.x/9.x.  Create module wise Detailed Unit test Cases covering all possible scenarios and execute them on completion of specific set of ETL module.  Participate on the routine production support calendar for 2 weeks every alternative month and support all production jobs in case of any issue or failure.  Job scheduling using TWS and Autosys schedulers using perl scripts.  Performance tuning of long running etl jobs. Union Bank (MUB), Monterey Park, CA-USA (July 2008 – July 2015): Integrated Credit Reporting System (ICRS): The Integrated Credit Reporting System is an OLAP system that provides Decision Support for the Credit Management group of the Bank. This Data Mart sources data from the Enterprise Data Warehouse and coexistent systems of the Bank and follows Data warehousing design fundamentals. The users can generate, create and broadcast reports through Business Objects which is the preferred front-end or analytical tool. Below are some of the key projects delivered while working in the application: 1. Informatica Upgrades (7.x to 8.x and 8.x to 9.x) 2. Oracle Upgrades (9t to 10g, 10g to 11g) 3. Tivoli to Autosys Upgrade 4. D2M Decoupling 5. SIL to AFS Conversion 6. MSS to MSP Conversion 7. GL to People Soft Conversion 8. TAM/FRONTIES/SBBT Acquisitions 9. Integration of Credit Risk Reporting for UB and BTMU. 10. Integration of OREO and LSBO portfolio 11. Consumer Credit Card Integration 12. Consumer Credit Card Integration 13. AFS to ACBS Conversion 14. Analyzed and Resolved 500+ Incident Management Tickets 15. Ongoing Production Issues/Business queries Centralized Data warehouse (CDW): CDW is the centralized data repository enterprise data comprising data from variety of OLTP systems like AFS, ELS, IBG, PPX, DDA, MSP, GL, HR etc. CDW is modeled in 3NF to serve the data requirements of various Credit oriented application and marts across bank. CDW has this normalized data spread across 100s of type 1 and type 2 data which provides the holistic view of Whole sale and retail exposures of the bank and capable of serving any reporting need for wholesale or retail portfolio of the bank. Operational Data Store (ODS):
  • 6. It is a type of database that's often used as an interim logical area for a data warehouse. While in the ODS, data can be scrubbed, resolved for redundancy and checked for compliance with the corresponding business rules. ODS is the 1st generation Enterprise data warehouse which loaded data to small data marts. ODS gets data from EBCDIC Flat files, cleans if and keeps it ready to load to CDW Roles and Responsibilities (Sr. ETL Lead/Data Engineer):  Interact with the Business users to identify and document Business and Data requirements for software development.  Develop FRD (Functional requirement/Design Document) and data architecture document by working closely with Business Community and other technology partners using Agile and Waterfall SDLC methodologies.  Responsible to conduct Impact and feasibility analysis on current and future pipeline projects on ICRS data mart.  Scrutinize functional requirements, specifications and source to target mapping documents, identifying underspecified requirements and other design challenges in order to ensure smooth SDLC processing to support business strategy and deliver quality business reporting.  Develops detailed analysis, design (Source to Target Mapping Specifications), construction and testing specifications ensuring technical compatibility and integration.  Create data flow diagrams, System Architecture Diagrams, data mapping documents from Source to stage and Stage to Target mapping documents indicating the source tables, columns, data types, transformations required and business rules to be applied.  Responsible for all driving SDLC activities related to architecture, design, development, implementation, administration and support of ETL processes for large scale data warehouses using Informatica Power Center 8.x/9.x and Oracle by taking other team members together.  To Perform Source system analysis (SSA) to identify the source data that needs to be moved into the target tables.  To Ensure Test Driven Software Development by Creating Test Plans, Test Cases, and Test Scripts for all testing events such as Unit Testing (DUT), System Integration Testing (SIT), and User Acceptance Testing (UAT).  Ensure Quality Software Development using standard and mappings and with various transformations like Expression, Aggregator, Joiner, Router, Sorter, SQL Transformation, Normalizer, Lookup (Connected and Unconnected) and Filter using Informatica Power Center 8.x/9.x.  Create Reusable and Common Transformations/Mapplets (Joiner, Sorter, Aggregator, Expression, Lookup, Router, Filter, Update Strategy, Sequence Generator, Normalizer and Rank) and Mappings using Informatica Designer and processing tasks/sessions/worklet using Workflow Manager to move data from multiple sources into targets using Informatica Power Center 8.x/9.x.  Responsible for creating data base objects like Tables, Synonyms, Indexes, Views, Triggers, Stored Procedure, Functions, Grants using SQL using Toad.
  • 7.  Validate and reconcile GL and LOAN data on daily basis using complex SQL and automated application (BRC) on daily basis.  Create and Implement Confirmed Dimension, FACTS, Aggregate, Rules and Static Tables as part of Dimension Modelling using Star Schema.  Assist BI Team in analyzing and resolving reporting data issues, hand=on experience in developing adhoc repots using Business Objects.  Implement Change Data Capture Logic (CDC-1/2/3/6) by tracking the changes in critical fields required by the user and demanded by data model using Informatica Power Center 8.x/9.x.  Perform Unit and Peer Code reviews for offshore team members to ensure accuracy.  Extensive use of Persistent cache to reduce session processing time.  Responsible for defining and Maintaining best practices, Coding standards and review checklist for Informatica Power Center 8.x/9.x and Oracle Development for onshore and offshore team members.  Create Workflows/Worklets using various tasks like Email, Scheduler, Control, Decision, and Session in the workflow manager.  Made use of Post-Session success and Post-Session failure commands in the Session task to execute scripts needed for cleanup and update purposes.  Responsible for maintaining data lineage for all KDE (Key Data Elements) in meta center  Perform root cause analysis for production issues and identify the short term and long term fix (SQL or ETL) in limited amount of time using Toad and Reporting Tool (Business Objects).  Support Production Environment on 24/7 basis.  Resolving issues related to Enterprise data warehouse (EDW), stored procedures in OLTP system and analyzed, design and develop ETL strategies.  Implement automated file transfer process using Secure and Non Secure file transmission methods like SFTP and FTP.  Creating Validation SQL for Data comparison and equivalence as per client Requirement using Toad.  Using UNIX shell script to send mail if there is any failure without any Manual intervention.  Troubleshooting of long running sessions and fixing the issues related to it.  Creating Deployment group whenever we have project release. Used to move the code from one environment to another environment, cleansing the unwanted files as part of Informatica Administration.  Support application development through system testing and user accept ance testing, bridging gap between business rules and technical implementation when necessary  Defect management using HP Quality Center/ALM.  Development of Shell Scripts to evoke the ETL jobs via Autosys Scheduler.  Job scheduling using TWS and Autosys schedulers using shell scripts.  Involved in Performance/ Query tuning. Generation /interpretation of explain plans and tuning SQL to improve performance using session partitioning, SQL override tuning, persistent caching, session re-arrangement.
  • 8.  Involved in admin tasks like analyzing Table space requirement, load balancing and performance.  Mentoring and assisting new joiners and existing team members by preparing Knowledge Transfer documents and Group meetings. Roles and Responsibilities (Informatica Administrator):  Responsible for maintaining coding standards like .i.e. Folder Names, Mapping names, sessions names, transformation names, workflow names, parameter file names, shell scripts names etc.  Creating, Managing Informatica Repositories, Users, folders and their respective permission and usage.  Responsible for tasks such as Repository Creation, Export & Import the objects, Adding Group, Users based on permission, Unlocks the User id and Killing long running session as per user request.  Troubleshooting of long running sessions and fixing the issues related to it.  ETL or Shell Script migration across ENV (.i.e. DEV to SIT, SIT to UAT and UAT to PRD).  Managing informatica Users working closely with Database Administrators, password changes for informatica users.  Killing the object level locks across repositories.  Monitoring the loads (Workflows) whether the loads are scheduled to respective timings.  Recover and restart informatica jobs in case of any load recovery.  Identifying the tardiness in loading process in case of any sessions are in hug status. 2. Union Bank Virtual Data Hub (VDH): Union Bank Virtual data hub is built on data virtualization principles (Data virtualization is any approach to data management that allows an application to retrieve and manipulate data without requiring technical details about the data, such as how it is formatted or where it is physically located.) using Informatica Data Services. VDH provides aggregate view of complete data inventory spread across multiple data warehouses, data marts and various OLTP applications and allow fast and direct access to these data sources for data integration projects. It has capability to deliver a current, Complete, Trusted view of the business within days by leveraging a single environment for data integration. Roles and Responsibilities (Data Virtualization Architect):  Working with business users and business analyst to elicitate Business and Data requirements and perform requirement analysis.  Translate business requited to high level and low level design documents and prepare S2T documents for team to write the data extraction programs using
  • 9. Informatica Data Services (Data Virtualization) using Agile/Scrum SDLC Method.  Developed Logical and Physical data models that capture current state/future state data elements and data flows.  Identify Source, Stage, Cleansing, Transformation and Presentation layer as part of Data Virtualization Framework.  Use Informatica Data Services (Data Virtualization) to create the physical data objects, Logic data objects, logical data models, Mappings, workflows, reusable transformations, SQL data Services and applications.  Responsible for maintaining Data Integration services and Caching for IDS objects.  Responsible for maintaining the repository and integration services.  Setup data services and ODBC connections for users to use the SQL data services for data analytics in Microsoft Excel, Business Objects, Toad Data Point as part of Administration activities.  Creating Database (Oracle, SQL Server, and ODBC) connectors on DIS or Informatica data services.  Develop optimized IDS programs to achieve push down optimization for better performance.  Maintaining Logical Data Object Caches on Oracle Database, Setting Up Caching Interval etc.  Ensure Load Balancing on DIS by monitoring long running and unwanted processes from multiple users as part of Administration activities.  Write Shell/Unix Scripts to call the DIS jobs on Autosys to perform automation for data extraction.  Apply and refine established ETL development standards and coordinating teams of ETL developers (typically 2 to 5) across multiple projects.  Mentoring and assisting new joiners and existing team members by preparing Knowledge Transfer documents and Group meetings.  Perform code reviews to ensure quality coding and data.  Develop and implement processes to improve and increase project efficiency.  Validates and Review the Test Plans and Test Scenarios, Test Cases; verify Test Results to ensure test driven software development.  Performance tuning of IDS objects in case of any bottlenecks.  Defect management using HP Quality Center. US Bank, CA-USA (June 2007 – June 2008) 1. Power Track DW-BI Reporting Solution: U.S. Bank Power Track is the world’s largest freight payment solutions provider and is a clear industry leader with an unmatched set of offerings in the market place. As U.S. Bank Power Track continues to evolve as a world-class leader in the payment and supply chain marketplace, it will need new product offerings and identify new revenue streams based on its BI strategy. The DW & BI solution project will help U.S. Bank Power Track overcome the shortcomings of the existing system, remove the dependency on Schneider National Data Warehousing services and drive business growth. IGATE developed a new Data Warehouse with components that will include an Operation Data
  • 10. store (ODS)/Staging, an Enterprise Warehouse and Subject Specific Data Marts. Roles and Responsibilities (ETL Developer):  Used Informatica Power Center for (ETL) extraction, transformation and loading data from heterogeneous source systems into target database.  Created mappings using Designer and extracted data from various sources, transformed data according to the requirement.  Involved in extracting the data from the Flat Files and Relational databases into staging area.  Mappings, Sessions, Workflows from Development to Test and then to UAT environment.  Developed Informatica Mappings and Reusable Transformations to facilitate timely Loading of Data of a star schema.  Developed the Informatica Mappings by usage of Aggregator, SQL overrides usage in Lookups, source filter usage in Source qualifiers, and data flow management into multiple targets using Router.  Created Sessions and extracted data from various sources, transformed data according to the requirement and loading into data warehouse.  Developed several reusable transformations and mapplets that were used in other mappings.  Involved in Unit Testing and Resolution of various Bottlenecks came across.  Implemented various Performance Tuning techniques.  Created PL/SQL Stored procedures and implemented them through the Stored Procedure transformation.  Used debugger to debug mappings to gain troubleshooting information about data and error conditions.  Implemented the Incremental loading of Dimension and Fact tables.  Develop, test and implement break/fix change tickets for maintenance.  Created sequential batches and concurrent batches for sessions.  Developed Interfaces using UNIX Shell Scripts to automate the bulk load & ‘ Update Processes using scheduling tools like Tivoli and Autosys.  Execute Test Cases and Capture Test results.  Migrated mappings/sessions/worklets/workflows from Development to Testing and from Testing to Production.  Developed local and global parameter files for ETL programs to support ETL batches for dynamic execution.  Created various Documents such as Source-to-Target Data mapping Document, and Unit Test Cases Document. References Available on request.