overseer
noun /ˈəʊvəsɪə(r)/
  /ˈəʊvərsɪr/
- (old-fashioned) a person whose job is to make sure that other workers do their work监工;工头 
- a person or an organization that is responsible for making sure that a system is working as it should(某体系的)监督者,监督机构,督察 
词源late Middle English (also denoting a person appointed to assist the executor of a will): from oversee.