Systems and methods for identifying members of a social network service as candidate referral sources are described. In some example embodiments, the systems and methods may receive or access information associated with an available job, and for a member of a social network that is affiliated with the available job (e.g., is employed by the company providing the available job), identify a connection within the social network that is a suitable candidate referral source by utilizing an algorithmic process that determines the suitability of members connected to the identified connection as candidates for the available job.