The Fourteen-Vendor Core
A core platform with 14 vendor integrations across 3 compliance regimes. Every release broke two of them. Two engineers on rotation just keeping the lights on.
- Unified event bus (Kafka, schema-registered)
- Policy-aware routing layer: regime is a tag, not a fork
- Vendor adapters written once, reused across integrations
- Replay + dead-letter story on day one
Still in production. Zero integration rewrites. On-call rotation dropped to one.