Markus did his master and PhD studies in Theoretical Physics and Mathematics in Innsbruck, Austria. He was initially interested in the foundations of quantum mechanics, later moved to the more applied field of computational methods in many-particle quantum mechanics, primarily density-functional theory, but stayed focused on the mathematical and theoretical side. After a postdoc at the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, Germany, he is now a member of the ERC project REGAL at OsloMet.