At Tata Consultancy Services, I optimized and parallelized NielsenIQ data-enrichment workflows, reducing pipeline runtime from ~9 hours to ~2.5 hours while processing billions of rows.
On NielsenIQ's Share Change Tolerance platform, I owned backend development, implementing REST APIs and services with Python, FastAPI and PostgreSQL. I also integrated the backend with an existing regression-based ML workflow.
For NielsenIQ's OnDemand project, I owned the CIP Connector module, developing Python and SQL workflows that transferred billions of rows from Hive to Snowflake. I also supported production deployments and database reliability work across IFS middleware and Oracle environments.
I built a transactional Digital Wallet System with ACID-compliant balance updates, row-level locking and idempotent transactions. I also developed a B2B inventory and retailer analytics platform with concurrent order processing and inventory forecasting.
