>People who work in anonymity
>Someone working tirelessly behind the scenes
>A person who advises someone in the public eye
>Working without public knowledge or awareness
>A person involved in systematic especially secret research
Dating back to a speech by Lord Beaverbrook in 1941, when he praised the scientists, researchers, and technical staff working anonymously behind the scenes in the UK during World War 2 as backroom boys
Example
The president trusts his backroom boys to give him the best advice at all times.
They left the technical problems for the backrooms boys