I ended up deploying traefik with oauth2-proxy. another option would be to use the MSAL java library to handle it in the app

Not sure what parts of the Azure AD you want to do, but you cannot do implicit flow with MSAL, since it doesn't seem to have any functions for verifying JWTs. You have to let it do some server-to-server communications, or it won't help you

I needed authentication and I got what I needed. I did not find ready made, native clojure options that I could use ootb.