In May 2016 she was named as part of the Australian cycling team as the sighted pilot for Jessica Gallagher for the 2016 Summer Paralympics in Rio, where they won a bronze medal in the Women's 1000m time trial.

[1] On 18 May 2015, she received a call from Glenn Doney, the head coach at the Victorian Institute of Sport, who informed her that the visually impaired Paralympic athlete and skier Jessica Gallagher intended to qualify for the 2016 Summer Paralympics in Rio de Janeiro as a track cyclist, and needed a tandem bicycle pilot.

[6] The next step was the 2016 UCI Para-cycling Track World Championships in Montichiari in Italy in March 2016.

[8] The following day they beat British defending world champions Sophie Thornhill and Helen Scott in the flying 200 m event in a world record time of 11.045 seconds, breaking the record of 11.112 seconds set by Brandie O'Connor and Breanna Hargrave in April 2014.

[12] At the 2018 UCI Para-cycling Road World Championships, Rio de Janeiro, Brazil, Janssen piloted Jessica Gallagher to silver medals in the Women's Tandem Time Trial and Sprint.