Cinderella Hired for His Revenge by Emmy GRayson

Her deal with the tycoon from her past will save her from destitution! Discover this thrilling revenge romance from Emmy Grayson.
The boss rarely forgives...
And he never forgets!
Under her father's ironclad influence, heiress Alexandra Moss was forced to shatter Grant Santos's heart to save his promising future. Now their positions are reversed. She's penniless and working every waking hour...and he's a legendary Manhattan CEO whose signature she needs on a business-saving contract!
Grant hires Alexandra to exact ice-cold vengeance. Except every glance is still red-hot! Being burned twice is not part of his plan... This time, when their passion becomes irresistible, Grant plans to be the one in control!
From Harlequin Presents: Escape to exotic locations where passion knows no bounds.