micromanager
noun /ˈmaɪkrəʊmænɪdʒə(r)/
/ˈmaɪkrəʊmænɪdʒər/
(disapproving)- a person who likes to control every detail of an activity or project, especially their employees' work
- She's a micromanager who always gets consumed by the tiny details of what's happening in the office.