A liaison officer is a person who acts as a connection or go-between for different groups or organizations. They help improve communication and cooperation between these groups by passing along information and solving problems. Full definition
Teachers were initially appointed as liaison officers in a number of primary schools throughout the State in areas of urban disadvantage. (citizensinformation.ie)
There is often a community liaison officer who is happy to discuss fire safety with you or your children. (yummymummyclub.ca)
All the student unions have student liaison officers who work with advice and support to students in work environment and study - related issues. (uu.se)