Ilcu moved from Romania to Canada with his family as a small child, settling in Vaudreuil-Dorion, Quebec. He attended Ecole Secondaire de la Cité-des-Jeunes and played college soccer at John Abbott College. He played for Équipe du Québec (the Quebec provincial team) between 2004 and 2006. Also played for the Quebec team at the 2009 Canada Games.
Ilcu began his career playing for amateur side Lakers du Lac Saint-Louis, and later played in the Canadian Soccer League for Trois-Rivières Attak in 2009 and Montreal Impact Academy in 2010 & 2012.
Ilcu made his debut for Montreal Impact (NASL) in the North American Soccer League on 9 April 2011.