After working on the editorial staff of Gale, a reference book publisher, for some 26 years, Wiloch became a freelance writer and editor in 2004.
Wiloch has illustrated books by authors such as Bruce Boston, Robert Frazier, Andrew Joron, and Jessica Amanda Salmonson, as well as his work.
Wiloch writes surrealist short-short pieces, often no longer than a page, that are as philosophical as they are whimsical, as clever as they are poetic, and as disturbing as they are intelligent."
According to Bruce Boston, writing in Illumen magazine, Wiloch is "arguably the leading writer of prose poems in the genre field for the last two decades."
English writer and artist A.C. Evans wrote in Stride magazine that Wiloch portrays "fragmentary confrontation with alien Otherness described in a symbolic vocabulary of closed rooms, casual catastrophe, uncanny Fortean phenomena, rituals of cruelty, and fleeting visions of transmundane worlds."