When you got through the Freelancer list and select one of them, e.g. here, there are links to their website/social media sites which you can use to contact them. Thanks.
Too bad as some other templates (e.g. Sitemile themes) allow to make a contact with a freelancer. Now that would be a major update for Hirebee (and Taskerr too). Without that option I wouldn't consider it as a complete theme and not purchasing until done. Is there a way that you can add some kind of messaging system?