staffer

This term specifically denotes an individual employee within a larger organizational hierarchy, often carrying a connotation of being a subordinate who executes the vision of a high-ranking official. It is most frequently encountered in political, governmental, or corporate news contexts to describe the people working behind the scenes for a public figure. While it is a countable noun, it is distinct from the collective noun staff. A staffer is a single person, whereas the staff refers to the entire group of employees.