Groff graduated from the University of Iowa, with an MFA, and MA. He has taught at University of Iowa, Rutgers University, and NYU, and at William Paterson University.
For the last eleven years, he has worked with literary and popular novelists, memorists, journalists, and scientists whose books have been published by Atria, Bantam, HarperCollins, Hyperion, Little Brown, Miramax, Putnam, St. Martin’s, Wiley, and other publishers. For twelve years he was an editor at Crown Publishing.
Groff's work was published in American Poetry Review, Bloom, Chicago Review, Christopher Street, Confrontation, The Georgia Review, The Iowa Review, Men on Men 2, Men on Men 2000, Missouri Review, New York, North American Review, Northwest Review, Out, Poetry, Poetry Daily, Poetry Northwest, Poz, Prairie Schooner, QW, Self, 7 Days, 7 Carmine, and Wigwag.