Dujmovits won silver in the parallel giant slalom at the 2013 FIS Snowboarding World Championships. She won a gold in the same discipline at the 2013 Winter Universiade. At the Sochi Olympics in 2014, she became the first Austrian to win gold in snowboarding. She was present at the Kaprun Funicular Disaster on 11 November 2000, a fire which claimed the lives of 155 people including Julia's friends and team mates. "Since there was a snowboarding event on that day, and a big line at the cable railway, my brother suggested taking the gondola instead, a decision which ultimately saved our lives."