She began to work as a payroll manager at the Budapest Directorate of the Hungarian State Railways (MÁV).

In 1979 she joined the Hungarian Young Communist League (KISZ) staff, where she served as Secretary of the Youth Environmental Council between 1984 and 1989.

[4] After the 2002 parliamentary election, she was appointed Deputy Secretary of State for EU Integration and International Relations in the Ministry of Environment and Water.

Before that, co-president Bernadett Szél was considered the biggest favorite for the position, however the party board entrusted her with the establishment of branches in countryside.

[5] In a few months, Schmuck resigned from her position, giving reason that she intend to concentrate on organizational work within the party.

[6] Schmuck became MP via her party's national list in the 2018 Hungarian parliamentary election, after she unsuccessfully ran in Budapest 14th constituency.

During the 2021 Hungarian opposition primary, she was the sole candidate of the electoral alliance in Pest County 9th constituency (Nagykáta).

On 24 August 2024, she announced her quit from LMP citing that the party "lost its opposition and green political image" under the dominance of Péter Ungár.