Born in Budapest, Hungary, Dzsenifer moved with her family to Germany in 1996, after her father a four time Hungarian football national, had signed a contract with 1. FC Saarbrücken. She began her career at DJK Burbach, where she played for a boys team.
In 2007, at the age of 14, Marozsán became the youngest player in the German Bundesliga when she made her debut for 1. FC Saarbrücken. Dzsenifer now plays midfield for Olympique Lyonnais, as well as the German Women’s national team.
At the 2016 Olympics, Dzsenifer led Germany to its first-ever Olympic gold medal in football. Dzsenifer remains a consistently high performer and in September 2020, she played her 100th match for Germany in a 3–0 win against Montenegro during the UEFA Women's Euro™ 2022 qualifying.