Abu Hanif Staff Software Engineer Home💰 Scope: $12,500 Scope
🏢 Client / Engagement: B2B SaaS Group
⚡ Verified Production SLA: 3.5M Identities • Zero Security Incidents
🛠 Core Technologies: Go • PostgreSQL • Redis • OAuth2 • WebAuthn • Docker
Executive Architecture Summary
Centralized identity provider service supporting multi-organization tenancy, SAML SSO, and Passkeys.
The Challenge A SaaS company with multiple sub-products needed to consolidate disparate login systems into a unified identity provider meeting enterprise SOC2 Type II requirements.
Architectural Solution - Developed an RFC 6749 compliant OAuth2/OIDC provider with granular scope delegation. - Added WebAuthn passkey registration, biometric sign-in, and instantaneous session revocation via Redis. - Implemented audit logging with cryptographic hash chaining for tamper resistance.
Measurable Impact - **Scale**: Managing 3,500,000+ active enterprise user identities. - **Security**: Passed third-party penetration audit with zero critical or high vulnerabilities.
Technologies Deployed:
GoPostgreSQLRedisOAuth2WebAuthnDocker
Have a similar architecture challenge?Abu Hanif is available for targeted audits, performance tuning, and greenfield platform builds.