Julien is the fifth coach to lead the Bruins since the start of the 2002-03 season. He replaces Dave Lewis, who was fired after one season in Boston. The Bruins were 35-41-6 last season and failed to qualify for the playoffs.
Julien, 47, most recently coached the Devils and had the team 47-24-8 when he was removed as coach with a week remaining in the 2006-07 regular-season schedule.
His first coaching position was as a midseason replacement in Montreal in 2003. He was fired after the 2005-06 season, having compiled a 72-71-16 record with the Canadiens.