重役（じゅうやく） means a high-ranking company executive or director.
Literally, it suggests someone with a “heavy role,” so it emphasizes major responsibility, status, and authority inside a company.
It is broader than a specific title like 社長（しゃちょう）, “company president.” It also overlaps with 役員（やくいん）, “corporate officer/director,” but 重役 often sounds more prestigious or weighty.
A common related phrase is 重役出勤（じゅうやくしゅっきん）. This is often sarcastic and means coming to work late as if you were an important executive.