Are you looking for a Job Application Deadline feature in your Job board plugin?
Job Application Deadline by PressTigers is an easy to use add-on that adds a Job Deadline meta box to one’s job posts at backend. One can set a job deadline date for a job. It automatically shows the closed status for a job after its deadline period. Additionally, one can also enable/disable this module for an individual job from its detail page. This add-on is also compatible with Frontend Job Posting Add-on.