GitKraken SSO Integration
Enterprise Single Sign-On with SAML 2.0 & OAuth 2.0
Overview
GitKraken, a leading developer tools company, needed enterprise-grade Single Sign-On so their business customers could authenticate using existing corporate identity providers. Enterprise buyers increasingly require SSO before procurement, and GitKraken needed a solution that supported the major protocols and identity platforms their customers already used.
The existing authentication model served individual users well but could not meet enterprise requirements for centralized identity management, automated user provisioning, and security policy enforcement. Tecxo.io was engaged to design and deliver a production-ready SSO layer that integrated cleanly with GitKraken's existing platform without disrupting millions of existing users.
The project was delivered in approximately three months by a focused team of four engineers specializing in identity protocols, backend services, and security testing.
Legacy Stack
- Email/password authentication only
- No SAML or OAuth 2.0 support
- Manual enterprise onboarding
- No SCIM or automated provisioning
- Single authentication flow for all user types
Platform Modules
The Challenges
Critical issues that required systematic solutions.
Enterprise Procurement Blockers
Large organizations require SSO before signing enterprise agreements. Without SAML and OAuth support, GitKraken could not close enterprise deals efficiently.
Multi-Protocol Complexity
Different enterprise customers use different identity providers — Okta, Azure AD, Google Workspace, and custom SAML implementations — each with unique configuration requirements.
Zero Disruption Requirement
Millions of existing individual users relied on the current login flow. The SSO layer had to coexist with legacy authentication without breaking existing sessions or user experience.
Security & Compliance
Enterprise customers demand strict security: encrypted assertions, signed requests, proper token expiry, replay attack prevention, and audit logging for authentication events.
Scalable Tenant Management
Each enterprise customer needed isolated SSO configuration with their own IdP metadata, certificate rotation, and domain verification — without a manual engineering setup for every new client.
SSO Architecture & Engineering
The Tecxo.io team owned the full SSO architecture — from protocol design and IdP integration through production deployment and enterprise customer onboarding support.
The Solutions
A comprehensive approach addressing architecture, technology, and operational concerns.
SAML 2.0 Service Provider Implementation
Built a full SAML 2.0 SP implementation supporting SP-initiated and IdP-initiated flows for enterprise identity providers.
- Implemented SAML assertion parsing and signature validation
- Supported SP-initiated and IdP-initiated login flows
- Built metadata exchange endpoints for IdP configuration
- Handled certificate rotation without service downtime
- Mapped SAML attributes to GitKraken user profiles automatically
OAuth 2.0 & OpenID Connect Integration
Added OAuth 2.0 authorization code flow with OpenID Connect for modern identity providers and social enterprise logins.
- Implemented authorization code flow with PKCE support
- Integrated OpenID Connect discovery and JWKS validation
- Built token refresh and session renewal logic
- Supported multiple OAuth providers simultaneously per tenant
- Enforced scope-based access control for API resources
Multi-IdP Support (Okta, Azure AD, Custom SAML)
Delivered a flexible identity provider abstraction layer supporting Okta, Microsoft Azure AD, and custom SAML configurations out of the box.
- Pre-built integration templates for Okta and Azure AD
- Self-service IdP configuration portal for enterprise admins
- Custom SAML attribute mapping per tenant
- Domain-based routing to correct IdP configuration
- Automated testing suite for IdP connectivity validation
Enterprise Tenant Management
Built admin tooling allowing GitKraken to onboard enterprise customers with isolated SSO configurations and minimal engineering involvement.
- Tenant-scoped SSO configuration with domain verification
- Admin dashboard for SSO status monitoring and troubleshooting
- Audit logging for all authentication events
- Automated health checks for IdP connectivity
- Documentation and setup guides for enterprise IT teams
Security Hardening & Production Deployment
Hardened the authentication service for production with comprehensive security testing and zero-downtime deployment strategy.
- Encrypted assertion handling and secure cookie management
- Rate limiting and brute-force protection on auth endpoints
- Penetration testing for SAML-specific attack vectors
- Blue-green deployment for zero-downtime releases
- Monitoring and alerting for authentication failure spikes
Results & Impact
Enterprise Deals
SSO capability removed a major procurement blocker for enterprise sales
IdP Support
Okta, Azure AD, and custom SAML providers supported from day one
User Disruption
Existing individual users experienced no changes to their login flow
Protocols
Full SAML 2.0 and OAuth 2.0 / OIDC support in a unified service
Key Takeaways
- Enterprise SSO is a sales enabler — without it, B2B SaaS companies lose deals to competitors who support it
- Supporting multiple identity protocols (SAML + OAuth) is essential for covering the full enterprise IdP landscape
- A tenant abstraction layer prevents engineering bottlenecks during enterprise onboarding
- SSO must coexist with legacy auth — never force-migrate existing users during initial rollout
- Security testing for SAML-specific vulnerabilities (XML signature wrapping, replay attacks) is non-negotiable