[2] He was employed as a consultant by CEFC China Energy and worked as an analyst with the Association for International Issues.

[3] From 2013 until 2017, Kulhánek worked as a parliamentary advisor to then-chairman of the Chamber of Deputies of the Czech Republic, Jan Hamáček.

[7] In April 2021, after Lubomír Zaorálek rejected his candidacy as Minister of Foreign Affairs of the Czech Republic, ČSSD requested Kulhánek to hold the position in the Second Cabinet of Andrej Babiš.

[10] On 15 February 2022, Kulhánek was appointed Permanent Representative of the Czech Republic to the United Nations,[11] an occupation he hinted during his tenure as foreign minister in the second cabinet of Andrej Babiš.

[12] In 2023, Kulhánek resigned from ČSSD after disagreement with the party leadership course represented by Michal Šmarda.