"Use niche job sites for advertising your job ads. This will allow you to attract high-quality applicants who are relevant to your field and have the required qualifications. Doing this will save on candidate-sourcing expenses and avoid the time lost in sieving through irrelevant applications when using non-specific job websites."
Finding the right candidate for that open position can be a challenge, as any employer knows. These entrepreneurs already have some idea of methods to the madness, and they've documented their advice for you!