Secure Auth & Multi-Tenant System for Industrial SaaS

Engineered a secure, tenant-isolated authentication and access architecture on AWS, PostgreSQL, and Redis for a UK water services enterprise scaling across regional operations.

Manual onboarding delays, weak session controls, and missing tenant isolation created severe security risks and cross-tenant data leak exposure.

Row-Level Security (RLS): PostgreSQL RLS + tenant-aware middleware guarantee complete regional data isolation.

Hardened Auth Pipeline: OAuth 2.0/JWT system with Redis token rotation, rate-limiting, and bcrypt password hashing.

Automated Provisioning: Instant setup of identities, granular RBAC roles, and audit trails for new regions.

Zero cross-tenant data security incidents recorded.

Team onboarding time slashed from days to hours.

Sub-100ms auth response time leveraging Redis caching.

100% centralized audit logging for regulatory compliance.