Glass Houses by Madeline Ashby

Luckily, those who survived have found a beautiful, fully-stocked private palace, with all the latest technological updates (though one without connection to the outside world). The house, however, has more secrets than anyone might have guessed, and a much darker reason for having been built and left behind.

Kristen, the hyper-competent “chief emotional manager” (a position created by her eccentric, boyish billionaire boss, Sumter) is trying to keep her colleagues stable throughout this new challenge, but staying sane seems to be as much of a challenge as staying alive.

Being a woman in tech has always meant having to be smarter than anyone expects–and Kristen’s knack for out-of-the-box problem-solving and quick thinking has gotten her to the top of her field. But will a killer instinct be enough to survive the island?