Wise brings enterprise SSO and SCIM to Firebase without the rewrite

As Wise evolved from a consumer fintech platform into a global business partner, enterprise clients started demanding robust identity management capabilities. Single Sign-On with Okta and Google, plus SCIM provisioning for automated user management, became non-negotiable requirements for closing large accounts.

What Wise wanted

Wise's authentication was built on Firebase. Rebuilding their entire identity stack in-house would derail product momentum and push back critical feature launches that kept them competitive.

Why they chose Scalekit

‍Scalekit provided Wise with a direct integration path that preserved their Firebase foundation. Using Scalekit's developer-focused SDKs and documentation, the engineering team integrated Okta and Google SSO on their existing Firebase setup in just days, not weeks.

The implementation included SCIM provisioning with Okta, giving enterprise admins the automated user management they expected. Even complex requirements like IdP-initiated SSO and custom token flows for Firebase were straightforward to implement, keeping the rollout on schedule without massive engineering overhead.

“The documentation was clear, practical, and easy to follow. It felt like we had a roadmap for every scenario.”

— Gábor Szabad,

Engineering Lead, Wise

When the team hit technical roadblocks—like parsing custom claims in ID tokens or refining Firebase token handling—Scalekit's support team responded quickly with collaborative solutions instead of generic troubleshooting guides.

Scalekit's admin portal gave enterprise IT teams direct control over their SSO and SCIM configurations, reducing support requests while meeting the self-service expectations of enterprise customers. The GDPR-aligned architecture and transparent Trust Center provided the compliance assurance both Wise and their enterprise clients required.

The Results

• Rapid enterprise authentication: Okta and Google SSO deployed on Firebase in days with full SCIM provisioning capabilities
• Advanced SSO features: IdP-initiated SSO and custom token flows implemented without Firebase rebuild
• Reduced engineering overhead: Self-service admin tools eliminated routine support requests from enterprise customers
• Preserved development velocity: Team avoided costly identity stack rebuild while meeting enterprise requirements
• Compliance confidence: GDPR-aligned architecture satisfied enterprise security and regulatory standards

"Every question we had was answered in hours, not days. It saved us weeks of troubleshooting and let us stay focused on delivery."

— Gábor Szabad

Engineering Lead, Wise

The bottom line: Wise delivered enterprise-grade identity management without abandoning their Firebase investment, enabling them to close enterprise deals while maintaining their product development pace.