Schmitz started playing football in 2007 at the youth division of FC Germania Zündorf where she was the only girl on the team.

[2] Schmitz started her senior career in the 2008–09 season with newly formed Bayer 04 Leverkusen women's team, playing in the 2.

[8][9][4][5] After a total of four years at Turbine Potsdam and 69 Bundesliga appearances, Schmitz left Germany to join Montpellier HSC playing in the French Division 1.

Being third choice goalkeeper behind Anna Felicitas Sarholz and Almuth Schult she did not appear in any of the tournament matches.

In 2011, she was called up to the Germany team that won the UEFA U19 Championship and played in 4 matches at the tournament final.