After arriving Australia & completing secondary school, Kaldor trained in design under Johannes Itten at Textilfachschule, Zürich. His first position was with Seker Fabrics, UK, then working with Claudio Alcorso, Hobart. By 1959, he returned to work at his parents' textile firm, Sydney. In 1968, he met the artists Christo and Jeanne-Claude and their joint work on 'Wrapped Coast" began his engagement in contemporary art.