engineer
n//ɪɲˈdʒin(ɪ)jə(r)//lokförare, ingenjör, maskinist
Originally, a person engaged in designing, constructing, or maintaining engines or machinery; now (more generally) , a person qualified or professionally engaged in any branch of engineering, or studying to do so.
(chiefly, historical) A person who operates a steam engine; specifically (nautical) , a person employed to operate the steam engine in the engine room of a ship.