When he completed his studies Zeidler was employed by the Council for Scientific and Industrial Research (CSIR) from 1942 to 1952.
[1] He worked in the Division of Industrial Chemistry and became leader of the chemical engineering section.
During this period he also traveled to the United States where he undertook postgraduate research at the Massachusetts Institute of Technology.
He was a Fellow and President of the Australian Academy of Technological Sciences and Engineering[6] and joined the Fellowship of the Australian Academy of Science by special election in 1985.
Zeidler Street in the Canberra suburb Gungahlin is also named in his honour.