The ledger
All of it as a technical lead at Nisum Technologies, embedded with retailers you'd recognize. It's client work, so I'll spare the names here — happy to go deeper over coffee.
← Back to the main pageKafka into Databricks, served over GraphQL — live operational numbers for 2,000+ stores, rolled up from store to district to division.
Tokenized the whole purchase path so no service held a real card number.
Store POS transactions — purchases, refunds, receipts — and the tools agents use to issue card refunds and account credit. I handled payment operations and receipt processing, end to end.
Holiday-peak stability work — including a datastore migration under live traffic — then pricing, promotions, registry and personalization.
Legacy warehouse and order management, re-platformed onto GCP microservices with MongoDB.
The services behind search, catalog feeds, inspiration boards and AI-powered related searches, across several well-known brands. Java and Spring Boot on Kubernetes, with Cassandra underneath.
Photography workflow systems for product imagery at one apparel giant; demand-forecast extracts that decide store replenishment at the same one, years earlier. I built the extract architecture and the delivery pipeline around it.