recruiting consultant

We are looking for an expert recruiter that can help us find the most effective online website to recruit IT staff internationally. We need to recruit in 3 time zones, for working schedules GMT-5, GMT, GMT+5. Announcements in English. We need a research that will target the best local websites in several regions/countries for: -pricing -highly qualified IT staff -cover all mentioned timezones -guaranteeing a certain amount of qualitative (IT master degree or MS certifications) applications on announcements we will supply. This study is targeting worldwide recruiting. When bidding, please assume we have recruiting for: https://www.freelancer.com/projects/Computer-Security-Microsoft/Firewall-And-Switching-Expert.html https://www.freelancer.com/projects/Project-Management-SQL/Front-office-project-manager-developer.html https://www.freelancer.com/projects/PHP-Javascript/Full-time-coder-needed-individuals.962512.html