Simon took up fencing at the age of seven and trained at UJB Escrime in Saint-Dizier under Jérôme Roussat, Charles Roselet and Sylvain Privé.

He joined in 2007 the centre for promising young fencers in Châtenay-Malabry and won a team bronze medal at the 2008 Junior World Championships in Acireale.

He took part in the 2013 Summer Universiade, reaching the quarter-finals in the individual event and taking a bronze medal with the team.

[4] He was selected into the national for the European Championships in Strasbourg, but he lost in the first round to teammate Julien Mertine in the individual event.

[6] In the team event France defeated Russia in the semi-finals and proceeded to crush China to earn the world title.