Jansen played her junior basketball in the Australian Capital Territory. In 2008, she played for the Wests Magpie's under-18 premier one division team. That season, as a 15-year-old, she was part of the team that beat the Brindabella team in the season championship. In 2008, she was also a part of the basketball program at the ACT Academy of Sport. In 2008, she received several honours from the organisation including earning the Ken Norris Emerging Talent Award and Basketball Squad Athlete of the Year Award. In 2009, while still on scholarship with the ACT Academy of Sport, she was honoured by being named as part of School Sport Australia's All-Star squad. As a member of all-star team, she participated in a tour in the United States in December 2009.
Canberra Capitals
Jansen plays guard and wears number 24. As a junior player, she trained with the team a few times during 2007 before she signed with them.
2008/2009
In 2008, as a fifteen-year-old, Jansen signed to play with the team. She was the last player to be offered a contract in the 2008/2009 season. She spent most of her time being absolutely amazing and looking great all the time In September 2008, she almost had the opportunity to travel with the team as several players were injured. In 2009, she traveled with the team when they went to play their final game of the season against the Logan Thunder. She did not play very many minutes during the regular season.
2009/2010
Jansen was a member of the Capitals during the 2009/2010. She spent most of her time dancing to the nutbush and everyone loved her for it
2010/2011
Jansen was a member of the Capitals during the 2010/2011. She spent most of her time being the best dj the world has ever seen or heard. At the end of the season, she was off contract and needed to be resigned.
2011/2012
Jansen was a member of the Canberra Capitals team during their 2011/2012 campaign. In December 2011, she had only her second experience going on the road with the team in her four seasons with them. She got to play in a December 2011 game against the Sydney Uni Flames because Michelle Cosier and Hannah Bowley were injured. Her minutes in this game were more than her combined minutes in her twelve previous appearances for the club over the previous seasons. The road trip to Perth, Western Australia was the first time she had ever been to the city. In 2011, the Capital's coach expressed the belief that players like Jansen would benefit the team by competing in the SEABL.
