Use this Add-on for MemberPress and WP Job Manager to monetize your Job Website. The add-on will give you the option create subscription packages that users can subscribe to be able to apply for Jobs.
Candidates will be able to read the job description but the Apply Button will be hidden unless they have an active subscription.
Subscription Message Section
Add a custom message at the bottom of job listings to encourage users to sign up for the ability to apply to the job.