Fonds zur Förderung der wissenschaftlichen Forschung
Mannhalter has spent her academic career at the Medical University of Vienna, beginning as a research assistant, advancing to an associate professorship in 1985, and becoming a full professor of Molecular Diagnostics in Clinical Chemistry in 2000. Between 2003 and 2007 she served as the chair of the Society of Thrombosis and Haemostasis (GTH), a scientific society serving primarily scientists in Germany, Austria, and Switzerland. She has also served as a vice-president at the Austrian Science Fund (FWF) since 2010 and became the interim president in 2015.