Thomas (Jaded Gentlemen #1) by Grace Burrowes.
Synopsis: Thomas Jennings, Baron Sutcliffe, relinquishes his position as man of business for David, Lord Fairly, to take up life as a country squire. Thomas’s newly purchased estate, Linden, is managed by Miss Loris Tanner, daughter of the former steward who abandoned his post—and his only child—under a cloud of scandal. Thomas is willing to give Loris a chance to prove her competence in a profession uniformly undertaken by men, but the situation becomes complicated. Will Loris give Thomas a chance to become something more dear and lasting to her than simply her broad-minded employer, or will the scandal in her past come back to ruin her future, too?