Famous for his work with the California-based metal band Machine Head, Mader contributed to the group's Burn My Eyes (1994) and The More Things Change... (1997) albums. He later recorded with the metal bands Soulfly and Roadrunner United.
In late 1991, he formed Machine Head along with singer Robb Flynn, bassist Adam Duce, and drummer Tony Costanza.
He and Lucas Banker co-founded a music production house called Dirty Icon Productions.
A native of Montreal, Quebec, Canada, he later settled in Los Angeles, California, with his film producer wife, Lati Grobman, and the couple's five children.
In the first decade of the 21st century, Mader produced two albums for fellow heavy metal guitarist Dino Cazares' band Divine Heresy.