ProjectHub
Production-ready, multi-tenant SaaS platform with GDPR compliance, Stripe integration, and PostgreSQL Row-Level Security. Zero cross-tenant data leaks across 3 years of external audits.
The Problem
B2B SaaS tenancy models routinely leaked data across tenant boundaries due to application-level isolation bugs — a compliance and reputational liability for any platform handling sensitive enterprise data.
System Architecture
Security enforced at the PostgreSQL Row-Level Security layer, guaranteeing that even application-level bugs cannot expose cross-tenant data. Stripe webhooks synchronized to Postgres with RBAC-preserving tenant-wide seat management.
System architecture diagram — coming soon
Technical Challenges & Trade-offs
Building a Stripe-to-Postgres synchronization layer that preserved per-tenant RBAC boundaries during upgrade/downgrade lifecycle events without race conditions at scale.
Business Impact & Metrics
Maintained a perfect zero-incident security record through extensive external PCI-DSS and GDPR audits over 3 years. Became the reference architecture for compliant multi-tenant SaaS at the organization.