administrator; director; commissioner
A formal title for a person in charge of managing or supervising a department, project, or regulatory body. Often used in government, corporate, or institutional contexts.
He was appointed as the administrator of the new project.
管理官は予算の執行状況を監督する。
The director oversees the budget execution.
責任者 emphasizes responsibility and accountability, whereas 管理官 focuses on the administrative and supervisory role.
administrator (government)
Compound of 管理 (management) and 官 (official, government position). The term likely originated in bureaucratic or military contexts to denote an appointed supervisory official.