The init daemon is the traditional source of immortality and overseer in Unix, so you may want to make an offering to this daemon or recite its spells. But there may be other daemons that could offer you more features.
He sees you when you're sleeping
He knows when you're awake...
not sure I'm a fan of using this specifically for background jobs though, as we have airbrake and splunk and other tools that detect these failures cheaply.
which, of course, leaves me hanging if the job queue is just not running, but thats monitored with runit which will issue an error if the service fails to start.
How many snitches should I get for $1/month, say ?