chief editor; managing editor
Specifically the top editorial position at a newspaper, magazine, or publishing house.
As the chief editor of the newspaper, he bears the final responsibility for the articles.
Broader use for the head or manager of an organization, department, or project; less common than sense 1.
As the manager of the project, he oversees the entire team.
He serves as the chief editor of that magazine.
He was appointed chief editor of the newspaper company last month.
The chief editor of this newspaper company is a well-known figure in the industry.
責任者 is a general term for 'person in charge', whereas 主幹 implies a higher, often singular, managerial role.
主筆 refers to the top editorial writer of a newspaper, while 主幹 is the overall chief editor with broader managerial authority.
主任 refers to a section leader or supervisor, a lower-ranking position than the more senior 主幹.
主観 (subjectivity, one's own viewpoint) is a homophone of 主幹 (chief editor/manager) with a completely unrelated meaning.
主管 (to be in charge of; the department/section responsible) shares the same reading as 主幹 but refers to administrative oversight rather than the specific title of chief editor.
Compound of 主 (しゅ, 'main, chief') and 幹 (かん, 'trunk, core'), literally 'main trunk', metaphorically the central person in an organization.