Resume collecting is usually either a dedicated service or added value through a subscription o jobr posting purchase. There are sites like Angel.co that allows smaller or startup firms find talent for free... I am personally launching a startup offering free plans for connecting with candidates.. Called OppenUp.com but is not fully ready yet... This platform will allow you to either browse candidates for free or for a lower cost post to different markets and gather that way...

Look into hiringsolved for now too.. They charge but not sure of their pricing structure...