Coquettesan

A woman within a workplace who advances herself by walking the thin line between being a relentless flirt (i.e. a coquette) and actually having sex with men of advantage to her (i.e. being a courtesan) for the sake of her career.

"I can't believe the stuff that that woman has gotten away with and they keep giving her more responsibility!"

"Yep, Stacey is a very accomplished coquettesan."