administrator · noun C /ədˈmɪn.ɪˌstreɪt̬.ər/
administrator
C1 someone who helps to manage an organization
Dictionary example:
She is an administrator at the hospital.
Learner example:
As a[n] ex-army officer and an administrator in an international firm, I am learning to work as a member of a team. (Certificate in Advanced English; C1; Greek)