Vamshi Krishna Reddy has over 7 months of experience using Informatica Power Center and Teradata for data warehousing projects. He has strong skills in ETL development, data modeling, and debugging Teradata utilities. He has extensive experience developing complex mappings from varied data sources and transformations for data loading and analytics.

1. Vamshi Krishna Reddy
Summary:
• 7 months of strong Data Warehousing experience using Informatica Power Center
9.x/8.x/7.x/6.x/5.x, Informatica Power Mart 7x/6x, Power Connect, Power Exchange,
Teradata, Oracle, Unix .
• Strong hands on experience using Teradata utilities (SQL, B-TEQ, Fast Load, MultiLoad,
FastExport, Tpump, Visual Explain, Query man), Teradata parallel support and Unix Shell
scripting.
• Strong skills in coding and debugging Teradata utilities like Fast Load, Fast Export,
MultiLoad and Tpump for Teradata ETL processing huge volumes of data throughput.
• Experience in Mappings, Mapplets, Worklets, Reusable Transformations, Sessions/Tasks,
Workflows and Batch Processes in Informatica Server.
• experience in using Informatica Power Exchange CDC to simplify ETL in Data Warehouse
applications.
• Experience in Data warehousing, Data Extraction, Transformation and loading (ETL) data from
various sources like Oracle, SQL Server, Microsoft Access, Microsoft Excel and Flat files into Data
Warehouse and Data Marts using Informatica Power Center 9.0/8.6.0/8.1.1/7.x/6.x.
• Hands on experience on Production Implementation and Post Production Support
• Hands on experience on scheduling the jobs like WLM, CTRL-M.
• Experienced in all data processing phases, from the Enterprise Model, Data Model (Logical and
Physical Model), Data Warehousing (ETL)
• Excellent skills in fine tuning the ETL mappings in Informatica.
• Expert in using debugger in the Informatica PowerCenter Designer to test and fix errors in the
mappings.
• Extensive experience in developing complex mappings from varied transformations like Router,
Filter, Sorter, Connected and Unconnected lookups, Normalizer, Expression, Aggregator,
Joiner, Union, Update Strategy, Stored Procedure and Sequence Generator etc.
• Experienced with Integration of data from heterogeneous sources such as Relational tables, flat
files, MS Excel, and XML files
• Expertise in SQL/PLSQL programming development and execution of Stored Procedures,
Functions and Packages. Experience in Loader utilities including SQL Loader and Teradata
Tpump, Fast Load, Multiload.
• Extensively worked on overall SDLC implementation that includes requirement gathering,
development, testing, debugging and deployment as well as Documentation, Production
Support.
• Experience working on End-To-End implementation of Data warehouse and Strong
understanding of Database and Data warehouse concepts, ETL, Star and snowflake Schema,
Normalization, Business Process Analysis, Reengineering, Data modeling.
• Experience in writing UNIX shell scripting and Parameter Files.
• Experience in using the Informatica command line utilities like PMCMD to control workflows in
non-windows environments
• Good Experience on Health care Domain.
• Maintained outstanding relationship with Business Analysts and Business Users to gather
information needs as per the business requirement. Experience in working with offshore and
onsite co-ordination.

2. • Systematic, disciplined and has an analytical and logical approach in problem solving. Ability to
work in tight Schedules and efficient in time management.
• Excellent Written, Communications and Analytical skills with ability to perform independently as
well as in a team.
Technical Skills:
Professional Experience:
Anthem Inc., Richmond, VA
ETL/Informatica and Teradata developer 08/2015-02/2016
Enhance STARS repository to absorb data from multiple source points and be the central repository for
multiple BI automated reports for Medicare business. As part of this initiative STARS repository will
integrate STARS, HEDIS, Rx and Risk Adjustment interventions and help in star rating and increase
Medicare revenue. The project was implemented in three phases.
Responsibilities:
• Researched Sources and identified necessary Business Components for Analysis
• Involved in complete SDLC (System Development Life Cycle).
• Interacted with business-users and business analysts to identify and develop business
requirements and transform it into technical requirements and ultimately will be responsible for
delivering the solution.
• Actively involved in analyzing, designing and development of the project
ETL Tools Informatica 9.X/8.x/7.x (Power Center/Power Mart) (Designer, Workflow
Manager, Workflow Monitor, CDC,Server Manager, Power Connect), Teradata
SQL Assistant, Putty.
Data Modeling Physical Modelling, Logical Modelling, Relational Modelling, Dimensional
Modelling (Star Schema, Snow-Flake, Fact, Dimensions), Entities, Attributes
Databases Teradata, Oracle 11g/10g/9i, MS SQL Server 2005/2000, MS Access
Languages SQL, PL/SQL, Data Structures, Unix Shell Script
Tools SQL plus, PL/SQL Developer, SQL* Loader
Operating Systems Windows NT/2000/2003/XP/Vista/7, UNIX
Scheduling Tools WLM, CTRL-M
Supporting Tools Service Now, TSRM

3. • Designed and developed Informatica Mappings and Sessions, Workflows based on business
user requirements and business rules to load data from source flat files in Unix and staging
tables
• Involved in requirement analysis, ETL design and development for extracting data from the
heterogeneous source systems like MS SQL Server , Oracle, flat files, XML files and loading into
Staging and Data warehouse Star Schema.
• Implemented real time Change Data Capture (CDC ) using informatica power exchange.
• Involved in massive data cleansing prior to data staging.
• Extracted Files using informatica power exchange and transformed them to be loaded in
Operation Data Store ( ODS ) tables.
• Maintained warehouse metadata, naming standards and warehouse standards for future
application development.
• Developed and scheduled Workflows using workflow designer, in Workflow manager and
monitored the results in Workflow monitor
• Designed, developed and documented the ETL processes using Informatica for extracting the
data and data transformations.
• Created mappings and applied transformations on the tables and created sessions for running
the processes in Informatica
• Used Load utilities (Mload, Fast Load, Tpump) to load the data into Teradata
• Writing BTEQ Scripts with error handling for batch processing of the data in Teradata
• Expertise in performance tuning and optimized the user queries. execution of frequently used
SQL operations and improve the performance
• Largely involved in Data profiling, identifying data issues, cleaning the data and reloading the
data.
• Performed Unit, Integration and UAT testing while testing the defects.
• Worked on capacity planning, reported disk and CPU usage growth reports using Teradata
Manager, DBQL
• Created complex tables, views, SQL joins and scripts for applications
• Written several SQL scripts for large data pulls and ad hoc reports for analysis
• Tuned SQL queries Developed Teradata scripts for updating and inserting millions of records into
tables
• Data reconciliation activities between EDWard and MRDM Teradata databases
• Production Implementation and Post Production Support
• Good Experience on Health care Domain and CMS Account or files.
Environment: Informatica Power Center 9.5.1, Power Exchange, Teradata, Unix/Shell Script, WLM,
ControlM , Microsoft Word, Excel, PowerPoint and Outlook, MS Access, MS SQL Server 2008, OMAR,
TSRM, Service Now, Delimited Flat Files, Ultra Editor, BTEQ, Putty, IpSwitch_FTP, SAS.