She is also the New York Times bestselling author of the YA novels Replica, Vanishing Girls, Panic, and the Delirium trilogy: Delirium, Pandemonium, and Requiem, which have been translated into more than thirty languages. The film rights to both Replica and Lauren's bestselling first novel, Before I Fall, were acquired by Awesomeness Films. Before I Fall was adapted into a major motion picture starring Zoey Deutch. It debuted at the Sundance Film Festival in 2017, garnering a wide release from Open Road Films that year.

Oliver is a 2012 E. B. White Read-Aloud Award nominee for her middle-grade novel Liesl & Po, as well as author of the middle-grade fantasy novel The Spindlers and The Curiosity House series, co-written with H.C. Chester. She has written one novel for adults, Rooms.

Oliver co-founded Glasstown Entertainment with poet and author Lexa Hillyer. Since 2010, the company has developed and sold more than fifty-five novels for adults, young adults, and middle-grade readers. Some of its recent titles include the New York Times bestseller Everless, by Sara Holland; the critically acclaimed Bonfire, authored by the actress Krysten Ritter; and The Hunger by Alma Katsu, which received multiple starred reviews and was praised by Stephen King as "disturbing, hard to put down" and "not recommended...after dark."

Oliver is a narrative consultant for Illumination Entertainment and is writing features and TV shows for a number of production companies and studios.

Oliver received an academic scholarship to the University of Chicago, where she was elected Phi Beta Kappa. She received a Master of Fine Arts in Creative Writing from New York University.

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