senior executive staff; upper management
Refers to high-ranking officials or executives in an organization, such as a company, government agency, or military unit.
The senior executives announced the new policy.
As a member of upper management, he is involved in important company decisions.
幹部 means 'executive' or 'management' in general, while 上級幹部 specifically refers to the senior or top-level executives.
重役 is a common term for 'company director' or 'top executive', often used in corporate contexts, similar to 上級幹部 but more specifically for board-level positions.
Compound of 上級 (じょうきゅう, 'high rank') and 幹部 (かんぶ, 'executive staff').