The redmine plugin already allows mapping of job to redmine projects.
If this plugin would allow mapping of redmine roles to jekins roles (Role based strategy), than user of redmine project with speical roles can autoamtcially get access to nmapped jobs and mapped roles in jenkins
This would mean single authentification (already implemeneted) and single authorization (this feature request)!

See also https://github.com/mattshep2000/jenkins-redmine-auth/issues/4