Simon Lajeunesse was born January 22, 1981 in Quebec City, Quebec. The 2nd round choice, 48th overall selection of the Ottawa Senators in the 1999 NHL Entry Draft, Lajeunesse is a graduate of the Quebec Major Junior Hockey League.
The goaltender from Quebec City played four seasons in the "Q" with stops in Moncton, Acadie-Bathurst and Val d'Or and was the 1999-2000 QMJHL Goaltender of the Year after sporting a 31-15-1 record with six shutouts and 2.61 goals against average.
A goaltender who anticipates the play well and has strong positioning in his net, Lajeunesse spent the majority of the 2001-02 season with the Senators AHL affiliate in Grand Rapids, 13 games with the ECHL's Mobile Mysticks and one game with the NHL club. Lajeunesse was on the move a lot during the 2002-03 season playing for the ECHL's Peoria Riverman and spending time with both the Binghamton Senators and the San Antonio Rampage of the AHL.