Gofer
A gofer, go-fer or gopher /ˈɡoʊfər/ is an employee who specializes in the delivery of specific items to their superior(s). Examples of these items include a cup of coffee, a tool, a tailored suit, or a car. Outside of the business world, the term is used to describe a child or young adult who is learning how to do tasks and is sent to fetch items. A similar job is that of peon in Commonwealth countries.
Gofer may also refer to a junior member of an organisation who generally receive the most vexing and thankless work.