He worked for Swiss and German newspapers and was reputed for his political commentaries. He translated all of Ionesco's books into German.
In 1940, Bondy worked for "Die Weltwoche"; in 1950, he joined the Congress for Cultural Freedom and established the monthly magazine Preuves in Paris. Since 1970, he lived in Zuerich. Bondy was the first Western intellectual who promoted among others the work of the Polish exile writer Witold Gombrowicz (1904-1969); see Note sur "Ferdydurke", "Preuves" 32/1953.