Career
Szényi took up fencing after coaches Gábor and Kornél Udvarhelyi came at his school for a sports recruitment event. His first coach was Bertalan Szőcs, who remains his master as of 2013. The next year he climbed his first individual World Cup podium with a bronze medal in Buenos Aires.
He took a team silver medal at the 2012 European Championships in Legnano, then at the 2013 edition in Zagreb.
A few months later he earned a team gold medal in the World Championships at home in Budapest.