a fast worker

Someone who is able to navigate a complicated, nuanced, or difficult situation in order to gain an advantage for themselves. A figurative use of the phrase's literal meaning, "one who is able to work quickly." Promoted to manager in less than half a year? My, he's a fast worker, isn't he? But the actress is a fast worker, deftly maneuvering through the more emotionally charged material to give her character an immediate presence in the film. It seems the new governor's a fast worker—he's used this crisis to showcase his leadership skills in the national media.

a fast ˈworker

(informal) a person who wastes no time in gaining an advantage, especially a person who can quickly gain somebody’s affection: She’s a fast worker! She’s only been here a few days and already the boss has invited her for dinner!