Details abridged. Real names available under NDA.
Series-B fintech
10× faster analytics, 40% cost reduction
Migrated 200+ analytics queries from a read replica to BigQuery + dbt. Built a semantic layer, decommissioned 14 ad-hoc dashboards, set up CI for models.
DTC marketplace
Sub-second to dashboard, zero data loss in 9 months
Kafka → Flink → Iceberg pipeline with idempotent writes and exactly-once semantics. Replaced a brittle Lambda-based attribution model.
Healthtech scale-up
+22% inventory accuracy, on-call halved
Demand forecasting service with feature store, drift monitoring, shadow deploy, and an actual rollback plan. The model has been in prod for 14 months.