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Sr. Data Specialist/etl Developer - Lead Resume

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Watertown, MA


  • Over 8+ years of IT experience in analysis, design, development, data conversion, Data Quality, Data Warehouse, Business Intelligence, Testing, documentation, and implementation of client/server applications
  • Strong working experience in the Data Analysis, Design, Development, Implementation and Testing of Data Warehousing, ODS and DataMart's using Data Conversions, Data Extraction, Data Quality, Data Transformation and Data Loading (ETL).
  • Experience in BI reporting tools using Business Objects Cognos, and Tableau.
  • Interpreted logical and physical data models for business users to determine common data definitions and establish referential integrity of the system.
  • Experience architecting highly scalable, distributed systems using different open - source tools as well as designing and optimizing large, multi-terabyte data warehouses.
  • Able to integrate state-of-the-art ETL technologies into the overall architecture and lead a team of developers through the construction, testing and implementation phase.
  • Extensively used Informatica Data Quality, Informatica Repository manager, Power center Designer, Workflow manager and Workflow Monitor.
  • Familiar with data architecture including data ingestion pipeline design, ETL architecture, data modeling and data mining
  • Expert in design and development of complex ETL mappings and scripts using Informatica Power Center and Informatica Data Quality.
  • Hands on solid experience in Performance Tuning of source, target, mappings, transformations, and sessions in Power Center and Data Quality.
  • Hands on solid experience in using REST APIs, Salesforce Connector, parsing JSON and XML Data into relational format using Informatica Data Quality.
  • Experience in interfacing the data from legacy systems to Oracle applications using SQL*Loader. Experienced in writing SQL statements and PL/SQL code in Oracle
  • Experience in Building Business Objects Universes and using various Data Providers like Universes, Stored Procedures, Free Hand SQL, Personal Data Files for retrieving data and creating Simple, Complex and Ad-hoc Reports.
  • Strong logical, analytical and communication skills with Solid business acumen. Ability to effectively gather and refine report requirements from Users and Management
  • Strong Team Management skills and excellent team player.
  • Familiar with Elastic Search Engine and Python Scripting.
  • Experience in a wide range of Business Domains - HealthCare, Financial, Government, Telecom, Banking, and Insurance.


Data Warehousing: Informatica Data Quality & Power Center 5.1.2/6.x/7.1.4/8.x/9.x/10.5. (Source Analyzer, Designer, Mapping Designer, Mapplet, Transformations), Power Exchange, B2B Data Transformation, Metadata Manager

Reporting, Bug Reporting & Version Control Tools: Business Objects 5.0/5.1, Micro Strategy 7.5, Tableau 2020.4, Jira Align, Jira User Stories, SQL*LOADER, Crystal Reports 8.5, SQL Navigator, TOAD, SVN, Control-M, Tidal Enterprise Schedule, Devops

O/S: Windows 95/98/NT/2000/XP/10/11, MS-DOS, UNIX, Linux, Sun Solaris.

Languages: PL/SQL, SQL, Transact-SQL, UNIX shell scripting, Python, Teradata-Bteq Scripts

Databases: Oracle 9i/10g/11g/12c/19c, Teradata 12.0/14.0/15.0 , DB2, SQL Server 2014/2019, Sybase 11.5 and MS Access97/2000, SAP

Data Analysis: Data Profiling, Data Quality /IDQ 8.6.1/9.6.1/10.5


Sr. Data Specialist/ETL Developer - Lead

Confidential, Watertown, MA


  • Interacting with the Business users to identify the process metrics and various key dimensions and measures and involved in full life cycle of the project.
  • Leading an On-Site and offshore team to Develop, Test, and Deploy the ETLs to Production in timely manner
  • Interacting with SCRUM Masters and Agile Team to identify user stories and delivering the results within the provided sprint time
  • Assisting architect on Developing ODS / Dimensional warehouse logical and physical data models.
  • Developing Rest Web Service API calls to external vendors to GET, PUT, and POST the Enterprise data by converting them to JSON/XML format
  • Using Salesforce Connectors to load Sales and Broker data from ODS to CRM reporting systems
  • Using Address Validator in Data Quality to validate all the Enterprise-wide member data
  • Deriving required Fact and Dimension tables to accommodate the data as per to bring additional data elements from Legacy RX source system into ODS as per the user requirements
  • Developing Conceptual, Logical and Physical database models for ODS Phase-2 assurance applications and forward engineered the DDLs
  • Worked on Health rules Payor (HRP) and major clinical systems such as lab, pharmacy, radiology and EMR applications
  • Identifying ETL specifications based on Business Requirements and creating ETL Mapping Documents.
  • Identifying issues in Production and fixing it on the Go
  • Defined Modelling & Naming standards and Best Practices for the Modelling team to use in the Data models as well as in the DDLs & DMLs while creating new data elements and adding attributes in ERStudio 16.0/17.0/19.0
  • Identified and eliminated duplicates in datasets thorough IDQ 10.5 components of Edit Distance, Jaro Distance and Mixed Field matcher, it enables the creation of a single view of customers, help control costs associated with mailing lists by preventing multiple pieces of mail.
  • Designed and developed the ETL processes using Informatica to load data from Oracle, SQL Server, Flat Files, XML Files and JSON files to target Oracle Data Warehouse database
  • Working closely with ETL team members to resolve the performance issues of ETL loads and business-related questions.

Environment: Oracle 19c, SQL Server 2019, Elastic Search, ERStudio19, Informatica Power Center 10.5, IDQ 10.5, B2B, Toad, SVN1.14

Sr. ETL Informatica Developer-SME

Confidential, Ashburn, VA


  • Participating in requirement gathering meetings to identify functional, non-functional and performance requirements of the project
  • Gathering data from 1000+ legacy order / inventory / customer / billing and provisioning systems
  • Assembling the collected data into a common representation of the legacy data
  • Proposing ETL architecture solutions based on the requirements and working on High-level, Low-level Design docs
  • Responsible for designing and implementing strategic ETL processes using Informatica and PL/SQL framework
  • Designing and developing ETL mappings to load data from source to Target using Informatica Power Center 9.6.1/10.1.1
  • Transforming the legacy data into VRD products and generating XREFs to compare legacy to VRD
  • Loading the transformed data into data mart tables in GMART
  • Involved in administration tasks including upgrading Informatica, importing/exporting mappings.
  • Created and managed the multiple environments, user groups, backup and restore of the repositories
  • Creating data manipulation and definition scripts using Teradata Bteq Utility.
  • Using BTEQ scripts to load data from staging tables into Target tables.
  • Working on MLOAD, FLOAD, TPUMP utilities of Teradata
  • Loading unstructured data Via Informatica PC.
  • Creating tables to load large sets of structured, semi-structured and unstructured data coming from UNIX, NoSQL and a variety of portfolios.
  • Assisting with data capacity planning and node forecasting

Environment: Informatica Power Center 9.6.1/10.1.1 , Power Exchange, Oracle 11g, Teradata 15, Teradata Utilities, Teradata SQL Assistant 15.10, Unix, WinSCP 5.7.5, JIRA, BMC Control-M.

ETL/Informatica SME

Confidential, Reston, VA


  • Participating in requirement gathering meetings to identify functional, non-functional and performance requirements of the project
  • Proposing DATA and ETL architecture solutions based on the requirements
  • Translating requirements into solution architecture and design specifications that can be used for development
  • Responsible for designing and implementing strategic ETL processes with data privacy / data masking solution(s)
  • Identifying ETL specification based on Business Requirements/Mapping Document. Formulating and documenting ETL process design. Participated and lead research and development efforts (proofs of concept, prototypes), as subject matter experts, with new technologies.
  • Designing and developing ETL mappings to load, transform data from source to Target using Informatica Power Center 9.5.1
  • Actively contributing and exploring data security / data privacy (data masking) technologies within the firm as well as vendors and recommending appropriate solution
  • Configuring DDM Connection rules, Security rules and AD Masking groups by views.
  • Conducting daily status calls to gather status of the project and updating the project manager in a timely manner
  • Successfully implementing Dynamic Data Masking for various applications in different phases

Environment: Informatica Power Center 9.5.1, Teradata 14.0, Oracle 11g, SQL Server 2008, Sybase 15.7 Toad, Rapid SQL 8.1.1, Remedy, Service Now, Linux 6.7

Lead ETL Developer

Confidential, Baltimore MD


  • Interacted with business analysts and developers to analyze the user requirements, functional specifications, and system specifications.
  • Used Data Quality 8.6.1 (IDQ) toolkit, Analysis, data cleansing, data matching, data conversion, exception handling, and reporting and monitoring capabilities of IDQ 8.6.1.
  • Proficiently worked on Conceptual, Physical and Logical data models (3NF) using various Data Modeling tools like Erwin and MS Visio with strong understanding in the principles of Data ware housing using Fact Tables, Dimension Tables, star schema modeling and snowflake schema modeling, foreign key concepts, referential integrity.
  • Identified and tracked the slowly changing dimensions/mini dimensions, heterogeneous Sources and determined the hierarchies in dimensions.
  • Created application-specific Data Marts so that users can access personalized dashboards of information that is specific to their department and business unit.
  • Worked on Query optimization & Performance tuning using Execution Plan, Performance Monitor.
  • Identified ETL specification based on Business Requirements/Mapping Document and formulate process design.
  • Implemented ETL standards and Best Practices while naming Maps and processes.
  • Worked closely with all team members to resolve the technical issues and business-related questions.

Environment: Oracle 11g, Flat Files, Teradata, Erwin r7.3.3, Informatica Power Center 8.6.1, Data Profiling / IDQ8.6.1, Toad 9.7.2, SQL, PL/SQL, WIN SCP 4.3.4, Unix Shell Scripts, Quality Center 9.0, Sun Solaris 10.

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