I was thinking the job poster would have to put up the bulk of the pot, let's say a 20% "signing bonus" that is distributed amongst the finalists (job offered). Applicants would each stake a small amount each, which would be shared amongst the applications who are dropped out at each gate prior to job offered gate, say 20% of it is shared amongst the first round as an example. It would have to be structured to mitigate gaming the system on both sides, e.g. professional applicants who drop out after job is offered (never accepting a job).