Sensitive Data Encryption — Module Design and Migration Retrospective

A retrospective on column-level encryption of sensitive data in a running service. Envelope encryption, DEK granularity decisions, the WHERE clause constraint that led to HMAC, and the migration automation Skill that spread the work across the org.

January 15, 2026 · 5 min read

VPC for Backend Engineers

Isolation, routing, connectivity, security — VPC’s four axes pulled into one place, framed around the decisions backend engineers actually face.

June 17, 2024 · 10 min read