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Case Studies / Regulated SA Fintech Platform
Regulated SA Fintech Platform
A production-grade, multi-tenant platform for a South African fintech, POPIA built in from the schema up.
2025 · Built, deployed & owned by The Fourths
Project Tags
Platform EngineeringCompliance SystemsPOPIA
Client Summary
A South African fintech operating in a licensed, supervised market, where a data-handling failure is not a bug, it is a regulatory event.
Project Summary
We designed and built a multi-tenant platform with tenant isolation, role-based access, and audit logging as first-class concerns. POPIA obligations were modelled at the database layer before application code began.
Design Approach
Compliance-first architecture on Azure: PostgreSQL Flexible Server with row-level tenant isolation, Entra B2C for identity, Key Vault for secrets, and an append-only audit trail on every regulated data modification. Built, deployed, and now owned end to end.
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