Sionic started out making games for the amiga, and was involved with Sword of Sodan before meeting Mikael Balle and joining The Silents.

Following his scene career, Sionic worked on a number of games including Sub-Terrania (1993), Red Zone (1994), Scorcher (1996), Hitman: Codename 47 (2000), Hitman 2: Silent Assassin (2002), Freedom Fighters (2003), Hitman: Contracts (2004) and Hitman: Blood Money (2006).