Before Marumi Kado was appointed to Max Planck, he researched and taught in the Department of Physics at La Sapienza University in Rome. He held a visiting professorship at the Weizmann Institute of Science in Israel and several positions at CERN as Project and Scientific Associate. Since 2003, he has been a member of the Centre National de la Recherche Scientifique (CNRS), the national institute for fundamental research in France.

After receiving his PhD from Pierre et Marie Curie University, Paris VI, he first worked as a CERN Fellow in the ALEPH and CMS research collaborations at CERN. This was followed by a research stay at the Lawrence Berkeley National Laboratory (LBNL) in California, USA, where he conducted research in the D0 collaboration. D0 was an experiment at the Tevatron Collider at Fermilab (Illinois, USA) that investigated the fundamental structure of matter. Professor Dr Marumi Kado is a Director at the Max Planck Institute for Physics (Werner Heisenberg Institute).