Yoon was first selected for the senior national team in 2011 and won individual gold at the
2012 Asian Championships. She did not participate in the
2012 Summer Olympics as the women's team sabre was not in rotation and she was not ranked high enough to be selected for the
individual event. In 2014, she was part of the team along with
Kim Ji-yeon,
Hwang Seon-a and
Lee Ra-jin and they won silver at the
Asian Championships and gold at the
Asian Games. Yoon won her first ever
Fencing World Cup medal in October 2015, at the
Orléans competition. She was joint bronze medalist with
Ibtihaj Muhammad. At the
2016 Summer Olympics, she only participated in the team event but they failed to win a medal after losing to Ukraine at the first stage. She won her first World Championships medal when they won silver in the team event at the
2017 World Championships. ==Medal record==