The Verifiers by Jane Pek

From Vintage:

Introducing Claudia Lin: a sharp-witted amateur sleuth for the 21st century. This debut novel follows Claudia as she verifies people’s online lives, and lies, for a dating detective agency in New York City. Until a client with an unusual request goes missing …

“This book is exhilaratingly well-written. I loved it so much that I didn’t want it to end.” —Emily St. John Mandel, bestselling author of Station Eleven

Claudia is used to disregarding her fractious family’s model-minority expectations: she has no interest in finding either a conventional career or a nice Chinese boy. She’s also used to keeping secrets from them, such as that she prefers girls—and that she’s just been stealth-recruited by Veracity, a referrals-only online-dating detective agency. 
 
A lifelong mystery reader who wrote her senior thesis on Jane Austen, Claudia believes she’s landed her ideal job. But when a client vanishes, Claudia breaks protocol to investigate—and uncovers a maelstrom of personal and corporate deceit. Part literary mystery, part family story, The Verifiers is a clever and incisive examination of how technology shapes our choices, and the nature of romantic love in the digital age.