desk jockey
From Longman Dictionary of Contemporary Englishdesk jockeyˈdesk ˌjockey noun [countable] American English informal someone who works in an office, sitting at a desk all or most of the day – used humorouslyFrom Longman Business Dictionarydesk jockeyˈdesk ˌjockey noun [countable] American English informalJOB someone who does all their work at a desk in an officeSamuel began his career as a desk jockey at a government agency in Detroit.