How do I send workflow messages to Job contacts?
From SmartWiki
Q: How do I send workflow messages to Job contacts?
A: After defining roles that your contacts can be assigned to, the syntax used inside the workflow message body content is: @contact.rolename.fieldname@
E.g. @contact.hiring manager.fullname@
Also see Applicant Tracking Email Template Variables for a list of other variables that may be used.