administrator
/ədˈmɪnəˌstreɪdər/
noun
A person responsible for running a business, organization, etc.
She noted that institution administrators are responsible for ensuring evacuation and other safety measures.
manager,director,managing director,executive,chief executive,controller,chair,chairperson,chairman,chairwoman,head,boss,chief,principal,official,leader,governor,premier,president,superintendent,supervisor,employer,proprietor