Authentication & Authorization Mastery: Securing Tens of Millions of Accounts at Germany's Largest Financial Institutions
From OAuth2/OIDC multi-tenant architectures serving major insurers to zero-trust mTLS service meshes protecting billion-euro enterprises—we architect authentication systems that combine bulletproof security with exceptional user experience.
Why Enterprises Trust Our Authentication Expertise
15 years securing Germany's most critical systems. Zero compromises. Battle-tested at enterprise scale.
Production-Proven at Massive Scale
Tens of millions of user accounts and 10M+ daily logins secured with our OIDC architecture. Multi-tenant systems onboarding customers in 3 minutes vs weeks. Not theoretical—running in production at Germany's largest insurers and energy companies.
Zero-Trust Security Philosophy
Every system designed with zero-trust principles. OPA policy-based authorization separated from code. mTLS service mesh with automated certificate rotation. In 15 years, no security breaches are known in the systems we've architected—our track record speaks.
Advanced OAuth2/OIDC Mastery
Custom authorization flows for complex enterprise requirements. PKCE, device flow, client credentials—we've implemented them all at scale. Keycloak, Azure AD B2C, custom solutions. We know what works.
Authentication Technology Mastery
Deep expertise in modern identity protocols, proven at enterprise scale
OAuth2 / OIDC Excellence
Multi-Tenant OIDC Architecture
3-minute customer onboarding vs weeks. Automated tenant isolation with policy-based security.
Custom Authorization Flows
OAuth2 extensions for complex enterprise requirements. PKCE, device flow, client credentials mastery.
Keycloak & Azure AD B2C
Production deployment for tens of millions of insurance policies. Custom extensions and federation strategies.
Zero Trust Security
OPA Policy-Based Authorization
Business rules separated from code. Dynamic policy updates without redeployment.
mTLS Service Mesh
Istio-based zero-trust networking. Certificate rotation, mutual authentication, encrypted transit.
SAML Federation
Enterprise SSO integration. Identity provider bridging for legacy systems.
Authentication Results That Matter
Real metrics from production systems serving millions
Daily logins secured
Authentication latency (under load)
Security breaches in 15 years
Authentication service uptime
Ready for Enterprise-Grade Authentication?
Let's architect an authentication system that combines bulletproof security with exceptional user experience. From multi-tenant OAuth2 to zero-trust architectures.
Discuss Your Authentication Needs