Vasilyan took up swimming when aged 3 years old, she was influenced by her uncle who was a water polo player. She competes mainly in the 50m freestyle and 100m freestyle, she competed in the 2014 European Aquatics Championships and the 2016 European Aquatics Championships and also swam in the 2013 World Aquatics Championships and two years later in the 2015 World Aquatics Championships.