Vermeer won the gold medal in the women's 63 kg event at the 2015 World Judo Cadets Championships held in Sarajevo, Bosnia and Herzegovina. She also won the gold medal in her event at the 2016 European Junior Judo Championships held in Málaga, Spain and the 2017 European Junior Judo Championships held in Maribor, Slovenia. At the 2017 World Judo Juniors Championships in Zagreb, Croatia, she won the silver medal in her event.
Vermeer competed in the women's 63 kg and women's team events at the 2017 European Judo Championships held in Warsaw, Poland. In the same year, she won one of the bronze medals in the women's 63 kg event at the Judo Grand Prix The Hague held in The Hague, Netherlands.
In 2018, Vermeer won the gold medal in her event at the World Judo Juniors Championships held in Nassau, The Bahamas. A few days later, she was eliminated in her second match in the women's 63 kg event at the World Judo Championships held in Baku, Azerbaijan. A year later, Vermeer lost her bronze medal match in the women's 63 kg event at the 2019 World Judo Championships held in Tokyo, Japan.
In January 2021, Vermeer won one of the bronze medals in her event at the Judo World Masters held in Doha, Qatar.[5][6] A few months later, she won one of the bronze medals in the women's 63 kg event at the 2021 European Judo Championships held in Lisbon, Portugal.[7][8] Vermeer was not selected as one of the judoka to represent the Netherlands at the 2020 Summer Olympics in Tokyo, Japan which turned her year's focus to the 2021 World Judo Championships in Budapest, Hungary.[9] She reached the semi-finals in the women's 63 kg event where she lost against the eventual gold medalist Clarisse Agbegnenou of France. Vermeer then secured the bronze medal by defeating Ketleyn Quadros of Brazil.[2][3] At the 2021 Judo Grand Slam Abu Dhabi held in Abu Dhabi, United Arab Emirates, she won the silver medal in her event.[10][11]
Vermeer won one of the bronze medals in her event at the 2022 Judo Grand Slam Paris held in Paris, France.[12][13]
Netherlands
(2021)
(2019, 2021)
