Since 2016, Markus Reiff is a technical assistant at the Ludwig Boltzmann Institute for Arthritis and Rehabilitation (LBIAR) in the research group of Dr. Burkhard Klösch, located at the Institute of Pharmaceutical Sciences (Karl-Franzens University of Graz). Since 2021 he is a full-time employee at the LBIAR. During his studies of human biology, he started his professional career at the histological department in the hospital Hietzing (former Lainz) (managed by Dr. Makieh Akrad) of the Medical University of Vienna (supervision of Prof. Josef Smolen and Prof. Günter Steiner).