Following that he attended the Faculty of Humanities of the Eötvös Loránd University (ELTE), where he studied philosophy and political science.

Following the Socialists' victory in 2002, Szigetvári was appointed an advisor to Prime Minister Péter Medgyessy, associated with Ferenc Gyurcsány.

In June 2004, he was appointed head of communication affairs and manager of government ads in the Medgyessy cabinet, and became Deputy Secretary of State within the Prime Minister's Office Public Relations Secretariat, replacing Róbert Braun.

After the election defeat, he became a member of the Board of Trustees of the Patriotism and Progress Association in 2011, established by ex-Prime Minister Gordon Bajnai and his intellect colleagues.

[9] In January 2018, Szigetvári was nominated the party's candidate for the position of prime minister for the upcoming parliamentary election.