[1][2] Born in Leiden, De Jong received his first lessons in pottery in the studio of Gerrit de Blanken (1894–1961) in Zoeterwoude in 1948.
He attended the Gerrit Rietveld Academie, where he studied at the ceramics department under Willem H. de Vries (1908-1969).
[3] In the year 1958-59 De Jong was designer at Intercodam Tegels, which produced glass mosaics and tile panels.
[3] In 1962 De Jong took part of an exhibition of six young ceramists from Amsterdam in Museum Boijmans Van Beuningen, together with Sonja Landweer, Jan de Rooden, Johan van Loon, Jan van der Vaart and Johnny Rolf, which signified the rebirth of artisan ceramics in the Netherlands.
[4] In the 1960s and 1970s he designed several larger ceramic wall sculptures, among others for swimming pools in Utrecht.