Scheduling a job (recurring)

[PAXANDDOS]

Couldn't really find it within the documentation.. is there a way to schedule a recurring job? Like a scheduled job that won't get destroyed on completion.
There's only one solution on my mind: an additional parameter for the later function that would look like "+1 day" or "+15 min" and would enable the recurrence incrementing passed DateTime by this parameter.

Or maybe something like that is already implemented? If not then can you please suggest a possible "workaround" to achieve this?