Neat idea! Are you using Jenkins over cron/SystemD timers just to keep things centralized or is there another reason?
Jenkins used for a lot of things - build, deploy applications (both mobile Android/iOS and PHP for our backend).
Also, we have CloudFormation and Ansible jobs in there for AWS services provisioning, etc.
And I have just a dedicated folder in Jenkins with few cronjobs to be running to keep them in Jenkins instead of using some Linux host with usual cronjobs, like creating AWS EBS backups from a Docker with AWS CLI and so on (although our latest EBS backups are created using the AWS DLM.
So basically - Jenkins is also used as such a "management unit".
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