I recently spoke to [broken link removed] (no affiliation). They provide a good service where for a set fee e.g. €795 for salaries 30k-50k; they will advertise your role across many of the job websites for 1 month, they will filter CV's according to specific criteria which you set and will then forward a small short list of candidates. If you are not successful in placing a candidate within one month, you get your money back, or the option to re-place your advertisement for a further 30 days, or to use it as a credit for a future role advertisement. To me it seems like a no-brainer, the only catch for this one is that you pay in advance, but the fees are far lower than a standard agency.