managing director; executive director
A senior executive title in Japanese organizations, often responsible for day-to-day operations. Typically ranks above a regular director (理事) and below a chairman or president.
He will assume the post of managing director from next month.
As managing director, he oversees the overall operations of the company.
A director or board member, a more general term. 専務理事 is a higher-ranking, executive-level director.
Another executive director title, often translated as 'executive director' or 'managing director'. The exact hierarchy between 専務理事 and 常務理事 can vary by organization.
Compound of 専務 (senmu, 'special duty' or 'executive') and 理事 (riji, 'director'). The term is a modern organizational title.