As a job Seeker, I'm looking for high quality jobs and low noise. What this points out to me is that it needs to be a curated list. You could go with letting

As a job Seeker, I'm looking for high quality jobs and low noise. What this points out to me is that it needs to be a curated list. You could go with letting users vote up good jobs and vote down bad jobs, but this creates an incentive to vote down jobs you've applied for already hoping no one else applies. One model might be a curated niche of job postings for whatever niche you would understand the most. Then you need a way to reduce the talent pool the HR department sees. One way to do this is give the job applicant a way to do a 'quick pitch' and the HR department can click a button called 'Tell me more' and the jobs process can go from there if both parties are interested. Maybe you could display stats as a way to incentive certain actions. If a job applicant has applied to 300 job offers with a cut and past and has only got 3 tell me mores, that would show to to the HR applicant. If however, a job applicant had a 98% tell more more rating on 30 job applications that means he's probably customizing it and the HR department can tell he probably has a pretty good EQ.