After playing in the high school punk band No Ambition, Stubbs became involved with Numb around the time of its formation in 1986, when he served as the band's lead singer under the pseudonym Sean St. Hubbs. He was involved intermittently with the group, often serving as its live drummer, until its dissolution in 2000.
Stubbs played with Bif Naked beginning in 1996, and frequently acted as her live drummer as well. Around this time, he also had a brief tenure with the Canadian punk band SNFU from 1998 to 1999. Stubbs co-founded Jakalope in 2003. Since then, he has also played with Air Raid Siren (featuring Rob Johnson, his former bandmate in SNFU) and Rat Silo (with members of Sons of Freedom).
In addition to playing music, Stubbs works in web development and graphic design.