Independent researcher
authorised CITES expert for sharks, rays and skates (Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety - BMU)
Volunteer of the Bavarian State Collection of Zoology
Member "Freunde der Bayerischen Staatssammlung für Paläontologie und Historische Geologie, München e.V."
Member "Paläontologische Gesellschaft e.V."
Member "Deutsche Elasmobranchier Gesellschaft (D.E.G.) e.V."