She then sat tests for the civil service in Berlin before being cast in Gute Zeiten, schlechte Zeiten and deciding on a career as actress.

[2] Harder played the role of Florentine 'Flo Spira' Spirandelli di Montalban in the television series Gute Zeiten, schlechte Zeiten from 1996 to 2002.

She has been playing the role of police officer Franziska 'Franzi' Jung in the series Notruf Hafenkante since 2006.

[3][4] Following the death in 2009 of Veronika Neugebauer, Harder took over the role of Gaby Glockner in the audio drama series TKKG.

[3][6] In June 2013 she married her longtime boyfriend Jörg Vennewald and in 2014 she gave birth to their daughter.