Owned backend, infrastructure, and security delivery for a production AI voice-coaching platform with tested API, deployment, database, and realtime service integrations.
Designed defense-in-depth authorization around least privilege, tenant ownership, runtime role isolation, and database access boundaries.
Established cryptographic and privacy controls for sensitive health and transcript data, including authenticated encryption, consent enforcement, portable export, and deletion workflows.
Hardened production delivery with CI-gated releases, non-root containers, health checks, and fail-closed configuration validation.
Built lifecycle reconciliation, stale-session cleanup, and recovery paths for webhook and session failures.
Established vendor cost governance with durable usage accounting, per-user quotas, runtime caps, and emergency shutoff controls.