Brainy Bear by Scarlett Grove

Sampson Reed is on a mission: take down the hacker who is the last stand between the Justice Squad and the remaining hyena terrorists. But Sampson is in for a surprise when a social worker knocks at his door with a two-year-old boy she claims is his nephew.
Megan Moore is on a mission of her own: take down the man who destroyed her sister. Megan will stop at nothing to extract her revenge, no matter what it costs her. In need of money, Megan answers an ad for a nanny position and walks into the home of the very man she’s been matched with on a shifter dating app.
Sampson knows his new nanny is his mate. But Megan denies the claim, leaving Sampson’s inner grizzly befuddled and confused.
Will Sampson complete his mission and claim his mate, or will Megan’s need for vengeance keep them apart and destroy their chance at happiness?