He served as the secretary of the Transcarpathian regional organization of the Communist Party of Czechoslovakia.
[3] During the First World War, he fought in the Austro-Hungarian Army on the Eastern Front.
[3] Mondok arrived in Budapest in 1919, and joined the ranks of the Hungarian Soviet Republic.
[3] Mondok was elected to the Czechoslovak Chamber of Deputies in the 1924 Užhorod by-election.
[3] He was purged in December 1933, accused by the 13th Plenum of the Executive Committee of the Communist International of collaboration with the class enemy and subsequently arrested.