Wawrzeniuk was a member of Swedish symphonic metal band Therion, doom metal side project of Therion and Entombed members—Serpent, Swedish death metal band Carbonized and Swedish punk rock group The Robots.
He is best known for his membership in Swedish symphonic metal band Therion, where he was singer and drummer between 1992 and 1996. Later he performed as a guest lead vocalist on Secret of the Runes (2001) bonus tracks, Lemuria and Sirius B (2004), and also as a live vocalist during the 20th Year Anniversary Tour in 2007. A cooperation with Joakim Knutsson (Rise and Shine) resulted in creation of Downforce of Doom, a doom act to release its debut album in 2010.
Wawrzeniuk holds a PhD in history, his thesis is entitled Confessional civilising in Ukraine : the bishop Iosyf Shumliansky and the introduction of reforms in the diocese of Lviv 1668-1708. His later research deals with rural cooperatives and citizenship in Austrian and Polish Galicia 1904-1939, identity formation among the villagers of Gammalsvenskby in Ukraine in the nineteenth century, and Polish perception of neighbouring small states' armed forces and security policy in the interwar time.
He works as researcher at School of Historical and Contemporary Studies at Södertörn University,  and assistant lecturer at Swedish Defense University.