Job board dashboards report clicks, views and applications. Those numbers are easy to collect and almost useless for deciding where the next euro should go. A board that sends 400 applications for a role, of which four are relevant, is not cheaper than one that sends 40 with twelve good candidates, even if its cost per application is lower.
The metric that matters
Cost per qualified applicant (CPQA) divides spend by the number of applicants who pass your first screen. It ignores the volume recruiters have to wade through and rewards channels that send people you actually want to talk to.
A worked example
Take one role advertised on two boards for a month, with €1,000 on each. Board A brings 250 applications, of which 5 pass the first screen. Board B brings 60, of which 15 pass. Board A's cost per application is €4 and Board B's about €17. On CPQA, Board A costs €200 per qualified applicant and Board B about €67. Judging by cost per application would move budget in exactly the wrong direction. (The numbers are illustrative.)
Why the same board performs differently by role
Boards are not good or bad in general. A generalist board can be the best channel for warehouse roles in one region and the most expensive for data engineers. Performance also shifts over time, as competitors change their budgets and ads age. An allocation set at the start of the quarter is usually out of date within weeks.
What to change first
- Measure CPQA, not cost per click or cost per application
- Track it per role family and region, at least weekly
- Pause ads that have not produced a qualified applicant within a set period
- Rewrite ads before raising bids: a clearer title and a salary range often do more than extra budget
- Move budget while the role is still open, not in next quarter's plan
This is the loop the Cruit job ads agent runs every day. It measures qualified applicants per board, rewrites underperforming ads and shifts budget within the limits you set. Teams using it cut job board spend by up to 70% while keeping the same flow of qualified candidates.