In October 2004 Klaus Blaum became Project Leader of the "Helmholtz Research Group for Young Investigators" on "Experiments with Stored and Cooled Ions" at the Johannes Gutenberg-University Mainz.
In 2006 he habilitated in experimental physics at the University Mainz about High precision mass spectrometry with Penning traps and storage rings.
[1] In October 2007 he was appointed as director and scientific member at the Max-Planck-Institute for Nuclear Physics in Heidelberg, Germany.
After his first term (2012–2014), he was again vice chairman of the advisory committee "Hadrons and Nuclei" of the Federal Ministry of Education and Research (BMBF) from 2018 to March 2020.
From July 2020 to June 2023, Klaus Blaum was vice president of the Max Planck Society and responsible for the Institutes of the Chemistry, Physics and Technology Section.