Vermeersch first represented at the Junior World Rowing Championships in 2009 at Brive-La-Gaillarde where she won a gold medal in the Australian women's coxless four.[2][3] The following year at the 2010 Junior World Championships in Racice, she rowed again in the coxless four and won a bronze medal.[2][3]
Vermeersch made her senior Australian representative debut in 2012.[2] She was selected in the Australian senior women's eight who finished fourth at the 2012 World Cup II in Lucerne, Switzerland and placed fifth in the same event at the 2012 World Cup III in Munich, Germany.[1][8] In that eight over a 2000m course, she helped set a time of 6 minutes 12.36 seconds, which qualified that Australian boat for the Olympics.[8]
Vermeersch was selected to represent Australia at the 2012 Summer Olympics in rowing in the eights.[4][9][10][11] The crew nicknamed themselves the "Motley Crew".[10] She earned selection on the boat after a battle between ten women for eight spots.[12] With an Australian rowing team of forty-six rowers, she was one of the youngest members of the team.[13][14] Prior to going to London, she participated in a training camp at the Australian Institute of Sport European Training Centre in Varese, Italy.[14] Vermeersch was seated at bow in the eight's Olympic campaign at 2012 London – the crew were disappointed with their 6th place finish.[15]
In 2013 she rowed in the senior women's eight who took gold at the World Rowing Cup I in Sydney. Half of World Cup eight were selected as a coxless four to compete at the 2013 World Rowing U23 Championships in Linz and in the lead up preparation they competed and won silver at the WRC III in Lucerne. At the 2013 U23 World Championships with Alexandra Hagan and Charlotte Sutherland and stroked by Lucy Stephan, Vermeersch won gold and an U23 World Championship title.[16]
Two months later that same four raced as Australia's senior women's coxless four at the 2013 World Rowing Championships in Chungju, Korea and took a bronze medal.[16] All members of the four also doubled-up in the senior women's eight with Vermeersch seated at bow and they placed fifth in that event in Chungju.[16]
Vermeersch held her seat in the Australian senior eight for the next two years. She raced at the 2014 World Rowing Cup III in Lucerne and then in the bow seat in the eight's campaign at the 2014 World Rowing Championships in Amsterdam where they finished in tenth place.[16] In 2015 she was in the eight at two World Rowing Cups in Europe and also competed in a coxless four at the WRC II. Then in her final Australian representative appearance, Vermeersch rowed in the two seat of the eight at the 2015 World Rowing Championships in Aiguebelette. They finished in overall seventh place.[16]
In 2018 Vermeersch was back in representative contention and regained a seat in the Australian women's eight. The eight started their 2018 international campaign with a bronze medal win at the World Rowing Cup II in Linz, Austria.[16] In their second competitive outing of the 2018 international season in an Australian selection eight and racing as the Georgina Hope Rinehart National Training Centre, after Rowing Australia patron, Gina Rinehart, Vermeersch won the 2018 Remenham Challenge Cup at the Henley Royal Regatta.[17] At the 2018 World Rowing Championships in Plovdiv she raced the Australian coxless pair with Addy Dunkley-Smith. They finished second in the B final for an overall eight place finish.[16]