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Jeroen Treffers currently serves as a volunteer host and technical service staff member at Rijksmuseum Boerhaave since August 2021. Prior to this role, Jeroen held a position as a system administrator at Stichting Jeugd en Jongerenwerk Midden-Holland from September 2013 to July 2020. There was a period of unemployment from July 2020 to October 2021.