Narmadha Narasimman

Data Engineer

Bank of America•  October 2013 - May 2023

Architected and executed data pipelines leveraging Hive and Spark to construct a comprehensive, large-scale commercial credit risk information system for capital risk modelling, analytics, and reporting. Transitioned the existing credit risk application from Netezza to Hadoop, guaranteeing data integrity by adhering to stringent data management and quality standards. Reconciled customer data across two applications, harmonizing 363 attributes for 21 million customer records daily, thereby enhancing process efficiency by reducing sourcing points. Developed an automation framework for view generation, which resulted in a 32-hour reduction in manual labor. Implemented metadata management, data quality checks, and data security protocols to maintain the application's integrity. Enhanced Spark SQL performance to expedite batch processing times, ensuring prompt and seamless data delivery to downstream systems. Mentored team members, enhancing their application understanding, resolving technical issues, and upholding best practices and coding standards.

Associate, Tech Lead

Cognizant Technology solutions•  August 2007 - October 2013

Technical Lead managing team of 4, responsible for seamless delivery of application running in Informatica, oracle PL/SQL and Unix shell scripting. Create and submit project metrics and status reports to clients on a weekly and monthly basis. Monitor jobs in production and fixing production issues within SLA. Create logical and physical data model,Change existing data model and generate DDL Scripts using Erwin to incorporate changes in tables for new business requirements. Design and develop data pipelines in informatica for new enhancements while analyzing and fixing data gaps within current application. Develop pl/sql procedures, complex SQL queries and functions for new business requirements. Prepare mapping templates, mapping between source and destination tables, exception reports for data migration.