do you know Monster, the website for people which offers or search jobs?
I have to realize a similar thing with some variation.
Users who are looking for work will have to complete a specific form, they will be able to see the different jobs but they can not apply for it.
Employers should instead be able to search in the database for candidates with the necessary requirements, using a search engine that allows them to select according to the worker's skills and past experiences.
Employers once consulted the list of people with the features selected, will be able to contact them only after paying an entrance fee.
The list that appeared to them, then it will be masked in part, and visible only after payment.
The contacts between the employer and user will be through the site, just as it does on freelancer.
Waiting your offers.