Born on September 8, 1968, Mazurkiewicz was originally the drummer for the band, Tirant Sin, alongside two other future Cannibal Corpse members Chris Barnes and Bob Rusay. The trio joined Alex Webster and Jack Owen in 1988, forming Cannibal Corpse. Besides drumming, he also plays the guitar, and is the group's primary lyricist and composer; he penned the songs "Dead Human Collection", "Frantic Disembowelment", "Monolith", "Carrion Sculpted Entity", and "Worm Infested."
Mazurkiewicz is married to Deana Mazurkiewicz; they have a daughter named Ava. He is a vegetarian.