PROFESSIONAL SUMMARY:

• 7+ years of Industry experience as a Data Analyst with solid understanding of Data Modeling, Evaluating Data Sources and strong understanding of Data Warehouse/Data Mart Design, ETL, BI, OLAP, Hadoop,Client/Server applications.
• Working Experience with Mortgage,Bank,Card,Telecom and Insurance Applications.
• Expert in writing SQL queries and optimizing the queries in Oracle,SQL Server 2008 and TeradataV2R6/R12/R13
• Excellent Software Development Life Cycle (SDLC) with good working knowledge of testing methodologies, disciplines, tasks, resources and scheduling
• Excellent knowledge in Data Analysis, Data Validation, Data Cleansing, Data Verification and identifying data mismatch.
• Performed data analysis and data profiling using complex SQL on various sources systems including Oracle and Teradata V2R6/R12/R13
• Experience in Hadoop Ecosystems HDFS, Map Reduce, Hive, Pig, HBase, Sqoop.
• Excellent understanding / knowledge of Hadoop architecture and various components such as HDFS, Job Tracker, Task Tracker, Name Node, Data Node and Map Reduce programming paradigm.
• Excellent experience on Teradata SQL queries, Teradata Indexes, Utilities such as Mload, Tpump, Fast load and FastExport.
• Experience in Data masking using Informatica data masking transformation.
• Strong experience in using Excel and MS Access to dump the data and analyze based on business needs.
• Excellent knowledge on Perl & Unix.
• Experienced working with Excel Pivot and VBA macros for various business scenarios.
• Strong experience in Data Analysis, Data Migration, Data Cleansing, Transformation, Integration, Data Import, and Data Export through the use of multiple ETL tools such as Ab Initio and Informatica PowerCenter Experience in testing and writing SQL and PL/SQL statements - Stored Procedures, Functions, Triggers and packages.
• Experience in automating and scheduling the Informatica jobs using UNIX shell scripting configuring Korn-jobs for Informatica sessions.
• Excellent experience in analysis huge volumes of data in industries such as Finance, Healthcare & Retail.
• Excellent knowledge on creating reports on SAP Business Objects, Webi reports for multiple data providers.
• Excellent knowledge in preparing required project documentation and tracking and reporting regularly on the status of projects to all project stakeholders
• Extensive knowledge and experience in producing tables, reports, graphs and listings using various procedures and handling large databases to perform complex data manipulations.
• Excellent experience in Data mining with querying and mining large datasets to discover transition patterns and examine financial data.
• Experience in testing Business Intelligence reports generated by various BI Tools like Cognos and Business Objects
• Excellent knowledge on creating DML statements for underlying statements.
• Extensive ETL testing experience using Informatica 8.6.1/8.1 (Power Center/ Power Mart) (Designer, Workflow Manager, Workflow Monitor and Server Manager)
• Have good exposure on working in offshore/onsite model with ability to understand and/or create functional requirements working with client and also have Good experience in requirement analysis and generating test artifacts from requirements docs.
• Excellent in creating various artifacts for projects which include specification documents, data mapping and data analysis documents.
• An excellent team player & technically strong person who has capability to work with business users, project managers, team leads, architects and peers, thus maintaining healthy environment in the project.

TECHNICAL SKILLS:

ETL &Big: Data Informatica 9.1/8.6/7.1.2 SSIS, Data Stage 8.x,Hadoop

Reporting Tools: Business Objects6.5, XIR2

Data Modeling: Star-Schema Modeling, Snowflake-Schema Modeling, FACT and dimension tables, Pivot Tables, Erwin

Testing Tools: Win Runner, Load Runner, Test Director, Mercury Quality Center, Rational Clear Quest

RDBMS: Oracle 11g/10g/9i/8i/7.x, MS SQL Server, UDB DB2 9.x, Teradata V2R6/R12/R13,R14,MS Access 7.0

Programming: SQL, PL/SQL, UNIX Shell Scripting, VB Script

Environment: Windows (95, 98, 2000, NT, XP), UNIX

Other Tools: TOAD, MS-Office suite (Word, Excel, Project and Outlook), BTEQ, Teradata V2R6/R12/R13 SQL Assistant

PROFESSIONAL EXPERIENCE:

Confidential, Newton,MA

Data Analyst/ Tableau Developer

Responsibilities:

• Responsible for gathering requirements from Business Analysts and Operational Analysts and identifying the data sources required for the requests.
• Designed Physical and Logical Data Models using Visio.
• Importing/exporting large amounts of data from files to Teradata and vice versa
• Worked on data profiling, data analysis and validating the reports.
• Designed and developed Ad-hoc weekly, monthly Tableau reports as per business analyst, operation analyst, and project manager data requests.
• Created dashboards and data visualizations using Action filters, Calculated fields, Sets, Groups, Parameters etc., in Tableau
• Used Teradata and spreadsheets as data sources for designing Tableau Reports and Dashboards.
• Developed Tableau data visualization using Dual Graphs, Scatter Plots, Geographic Map, Pie Charts and Bar Charts, Stacked Bar Charts.
• Distributed Tableau reports using techniques like Packaged Workbooks, PDF etc.
• Worked on Data Verifications and Validations to evaluate the data generated according to the requirements is appropriate and consistent.
• Responsible for collecting the data and loading it into the Data base.
• Developed reports with Custom SQL and views to support business requirements.
• Written complex SQL queries using joins and OLAP functions like CSUM, Count and Rank etc.
• Worked on Set, Multiset, Derived and Volatile Temporary tables.
• Extracted data from existing data source and performed ad-hoc queries.
• Performance tuned and optimized various complex SQL queries.

Environment: TeradataV13,Tableau8.2,8,HpUnix,Hadoop,Teradata,SAS,BTEQ,SQL Assistant,Windows,MS Office

Confidential, Franklin, TN

Data Warehousing Analyst

Responsibilities:

• Analysis of functional and non-functional categorized data elements for data profiling and mapping from source to target data environment. Developed working documents to support findings and assign specific tasks
• Involved with data profiling for multiple sources and answered complex business questions by providing data to business users.
• Worked with data investigation, discovery and mapping tools to scan every single data record from many sources.
• Performed data mining on Claims data using very complex SQL queries and discovered claims pattern.
• Created custom SQLs to extract data from Teradata that can be used in the Hadoop environments
• Created DML code and statements for underlying & impacting databases.
• Extensively used ETL methodology for supporting data extraction, transformations and loading processing, in a complex EDW using Informatica.
• Perform data reconciliation between integrated systems.
• Metrics reporting, data mining and trends in helpdesk environment using Access
• Written complex SQL queries for validating the data against different kinds of reports generated by Business Objects XIR2
• Extensively used MS Access to pull the data from various data bases and integrate the data.
• Performed data analysis and data profiling using complex SQL on various sources systems including Oracle and Teradata.
• Responsible for different Data mapping activities from Source systems to Teradata
• Assisted in the oversight for compliance to the Enterprise Data Standards
• Worked in importing and cleansing of data from various sources like Teradata, Oracle, flat files, SQL Server 2005 with high volume data
• Worked with Excel Pivot tables.
• Create and Monitor workflows using workflow designer and workflow monitor.
• Performing data management projects and fulfilling ad-hoc requests according to user specifications by utilizing data management software programs and tools like Perl, Toad, MS Access, Excel and SQL
• Written SQL scripts to test the mappings and Developed Traceability Matrix of Business Requirements mapped to Test Scripts to ensure any Change Control in requirements leads to test case update.
• Involved in extensive DATA validation by writing several complex SQL queries and Involved in back-end testing and worked with data quality issues.
• Developed regression test scripts for the application and Involved in metrics gathering, analysis and reporting to concerned team and Tested the testing programs
• Identify & record defects with required information for issue to be reproduced by development team.
• Flexible to work late hours to coordinate with offshore team.

Environment: Quality Center 9.2, MS Excel 2007, PL/SQL, Business Objects XIR2, ETL Tools, Hadoop,Informatica 8.6, Oracle 10G, Teradata R13, Teradata SQL Assistant 12.0

Confidential, Atlanta

Sr. Data Analyst

Responsibilities:

• Analysis of functional and non-functional categorized data elements for data profiling and mapping from source to target data environment. Developed working documents to support findings and assign specific tasks
• Created data masking mappings to mask the sensitive data between production and test environment.
• Worked on claims data and extracted data from various sources such as flat files, Oracle and Mainframes.
• Worked with data investigation, discovery and mapping tools to scan every single data record from many sources.
• Performed data analysis and data profiling using complex SQL on various sources systems including Oracle and Teradata.
• Written several shell scripts using UNIX Korn shell for file transfers, error logging, data archiving, checking the log files and cleanup process.
• Created Webi reorts and modified existing Universes in SAP Business Objects
• Metrics reporting, data mining and trends in helpdesk environment using Access
• Performing data management projects and fulfilling ad-hoc requests according to user specifications by utilizing data management software programs and tools like Perl, Toad, MS Access, Excel and SQL
• Written SQL scripts to test the mappings and Developed Traceability Matrix of Business Requirements mapped to Test Scripts to ensure any Change Control in requirements leads to test case update.
• Involved in extensive DATA validation by writing several complex SQL queries and Involved in back-end testing and worked with data quality issues.
• Worked with end users to gain an understanding of information and core data concepts behind their business.
• Assisted in defining business requirements for the IT team and created BRD and functional specifications documents along with mapping documents to assist the developers in their coding.
• Identify & record defects with required information for issue to be reproduced by development team.
• Designed and developed database models for the operational data store, data warehouse, and federated databases to support client enterprise Information Management Strategy.
• Flexible to work late hours to coordinate with offshore team.

Environment: - MS SQL Server 2008, Oracle 10g, MS office, Business Objects Clear Quest, Clear Case, Teradata R13

Confidential, Chicago, IL

Data Analyst

Responsibilities:

• Involved in Data mapping specifications to create and execute detailed system test plans. The data mapping specifies what data will be extracted from an internal data warehouse, transformed and sent to an external entity.
• Analyzed business requirements, system requirements, data mapping requirement specifications, and responsible for documenting functional requirements and supplementary requirements in Quality Center.
• Setting up of environments to be used for testing and the range of functionalities to be tested as per technical specifications.
• Tested Complex ETL Mappings and Sessions based on business user requirements and business rules to load data from source flat files and RDBMS tables to target tables.
• Performed data mining on Claims data using very complex SQL queries
• Responsible for different Data mapping activities from Source systems to Teradata
• Created the test environment for Staging area, loading the Staging area with data from multiple sources.
• Responsible for analyzing various data sources such as flat files, ASCII Data, EBCDIC Data, Relational Data (Oracle, DB2 UDB, MS SQL Server) from various heterogeneous data sources.
• Delivered file in various file formatting system (ex. Excel file, Tab delimited text, Coma separated text, Pipe delimited text etc.)
• Executed campaign based on customer requirements
• Followed company code standardization rule
• Performed ad hoc analyses, as needed, with the ability to comprehend analysis as needed
• Involved in testing the XML files and checked whether data is parsed and loaded to staging tables.
• Responsible for creating test cases to make sure the data originating from source is making into target properly in the right format.
• Tested several stored procedures and wrote complex SQL syntax using case, having, connect by etc
• Involved in Teradata SQL Development, Unit Testing and Performance Tuning and to ensure testing issues are resolved on the basis of using defect reports.
• Tested the ETL process for both before data validation and after data validation process. Tested the messages published by ETL tool and data loaded into various databases
• Experience in creating UNIX scripts for file transfer and file manipulation.
• Provide support to client with assessing how many virtual user licenses would be needed for performance testing.
• Ensuring onsite to offshore transition, QA Processes and closure of problems & issues.
• Tested the database to check field size validation, check constraints, stored procedures and cross verifying the field size defined within the application with metadata.

Environment: Informatica 8.1, Data Flux, Oracle 9i, Quality Center 8.2, SQL, TOAD, PL/SQL, Flat Files, Teradata V2R6

Confidential

Data Analyst

Responsibilities:

• Designed & Created Test Cases based on the Business requirements (Also referred Source to Target Detailed mapping document & Transformation rules document).
• Involved in extensive DATA validation using SQL queries and back-end testing
• Used SQL for Querying the database in UNIX environment
• Developed separate test cases for ETL process (Inbound & Outbound) and reporting
• Involved with Design and Development team to implement the requirements.
• Developed and Performed execution of Test Scripts manually to verify the expected results
• Design and development of ETL processes using Informatica ETL tool for dimension and fact file creation
• Involved in Manual and Automated testing using QTP and Quality Center.
• Conducted Black Box - Functional, Regression and Data Driven. White box - Unit and Integration Testing (positive and negative scenarios).
• Defects tracking, review, analyzes and compares results using Quality Center.
• Participating in the MR/CR review meetings to resolve the issues.
• Defined the Scope for System and Integration Testing
• Prepares and submit the summarized audit reports and taking corrective actions
• Involved in Uploading Master and Transactional data from flat files and preparation of Test cases, Sub System Testing.
• Document and publish test results, troubleshoot and escalate issues
• Preparation of various test documents for ETL process in Quality Center.
• Involved in Test Scheduling and milestones with the dependencies
• Functionality testing of email notification in ETL job failures, abort or data issue problems.
• Identify, assess and intimate potential risks associated to testing scope, quality of the product and schedule
• Created and executed test cases for ETL jobs to upload master data to repository.
• Responsible to understand and train others on the enhancements or new features developed
• Conduct load testing and provide input into capacity planning efforts.
• Provide support to client with assessing how many virtual user licenses would be needed for performance testing, specifically load testing using Load Runner
• Create and execute test scripts, cases, and scenarios that will determine optimal system performance according to specifications.
• Modified the automated scripts from time to time to accommodate the changes/upgrades in the application interface.
• Tested the database to check field size validation, check constraints, stored procedures and cross verifying the field size defined within the application with metadata.

Environment: Windows XP, Informatica Power Center 6.1/7.1, QTP 9.2, Test Director 7.x, Load Runner 7.0, Oracle 10g, UNIX AIX 5.2, PERL, Shell Scripting