Apereo CAS
CAS is the SSO solution used by plenty of universities and companies all around the world.
As a committer (the main one in Europe) of the CAS Open Source project, I'm one of its major contributors.
⇨ I am Jérôme LELEU 
and I am available remotely for consulting/development missions on CAS, pac4j, OAuth, OpenID Connect, SAML or more generally on authentication, application security, SSO or IAM.
⇨ I am based near Bordeaux, France, and work remotely with clients all around the world. Contact me at jerome@casinthecloud.com.
Let's talk about your project
Describe your need in a few lines, I answer you personally.
AI is now speeding up the discovery and the reporting of vulnerabilities: whether in CAS, pac4j or any other Open Source project, you must now be able to react and upgrade quickly.
pac4j
It's a Java security framework supporting many authentication mechanisms.
I am the creator and leader of the pac4j Open Source project.
Other technologies
I can also help you on security protocols and libraries and more generally on authentication, security, SSO, and IAM with best practices and audit.
What I can do for you
- Security and architecture audit of your authentication: SSO, IAM, session, token and authorization management.
- Apereo CAS setup, upgrade and customization: installation, migration, development of tailor-made modules.
- pac4j integration in your Java applications: Spring, Spring Security, Jakarta EE, Play, Vert.x and many more.
- OAuth 2.0, OpenID Connect and SAML 2.0 implementation: flow selection, identity federation, interoperability between providers.
- Coaching and knowledge transfer to your teams on SSO, IAM and application security.
- Support and troubleshooting on CAS or pac4j platforms already running in production.