In the years 2001, 2003, and 2004, Julfalakyan won the Junior Armenian Championship, and won the Cadet European Championships in 2003 and 2004 and the Junior World Championships in 2007. Arsen, age 21, competed at the
2008 Summer Olympics. He was eliminated in his second match, coming in tenth place. Julfalakyan was a member of the Armenian Greco-Roman wrestling team at the 2009
Wrestling World Cup. The Armenian team came in third place. Julfalakyan personally won a bronze medal. Julfalakyan won the gold medal at the
2009 European Wrestling Championships in
Vilnius and the silver medal in the
2010 World Wrestling Championships in
Moscow. Julfalakyan was a member of the Armenian Greco-Roman wrestling team at the 2010 Wrestling World Cup. The Armenian team came in third place. Julfalakyan personally won a gold medal. Arsen made his Olympic return at the
2012 Summer Olympics. He advanced to the finals without losing a single point, but faced defeat in the finals against
Roman Vlasov in a tensely contested match. Vlasov called Julfalakyan his idol afterwards. Julfalakyan won an Olympic silver medal, the first Olympic silver medal won by an Armenian representative in sixteen-years. At the closing ceremony, Julfalakyan was the flag bearer of Armenia. Julfalakyan was voted the Armenian Athlete of the Year for 2012. Julfalakyan won the gold medal at the
2014 World Wrestling Championships, the first for Armenia in Greco-Roman wrestling in 13 years. In the 2014 Grapple at the Garden in New York City, Julfalakyan defeated 4-time NCAA champion
Kyle Dake in a Greco-Roman match. He won the "Dan Kolov and Nikola Petrov" international tournament in Sofia on 24 April and dedicated his victory to the victims of the
Armenian genocide on the 100th anniversary, wearing a shirt commemorating the 1.5 million victims during the medal presentation. He competed at the
2016 Summer Olympics but lost in the first round and didn't move onto the repechage. In 2024, he competed at the
Pan American Wrestling Olympic Qualification Tournament held in Acapulco, Mexico hoping to qualify for the
2024 Summer Olympics in Paris, France. Due to a serious injury(tendon retraction), he was eliminated in his second match. ==Personal life==