Hi! Thank your posting "Zendesk sso integration with backend".
i understand your requirement . I have 7+ years of work experience in .NET, C# Programming, Software Architecture, Core php and Mysql, codeignitor, customMore
I have 5+ years' experience in Single Sign on technology.
I have experience in SSO integration with 3rd party paid SSO solution like OKTA,Azure SSO,Miniorange and Open source solutions like Simplesamlphp,KeyMore