[1] [2] She is Curator of Dutch and Flemish Old Master Painting at the RKD – Netherlands Institute for Art History, in The Hague.
[4] [5][6][7] Following her PhD, she worked as a postdoctoral researcher at the Statens Museum for Kunst in Copenhagen, where she studied a large private collection of Old Master paintings.
From 2019 to 2021, she was a researcher at the University of Geneva, contributing to the RKD-database "Visiting the Golden Age".
[8] In November 2021, Jager was appointed as Curator of Dutch and Flemish Old Master Painting at the RKD.
[9] In this role, she is also working on a collection catalogue of Dutch and Flemish old master paintings from the Nivaagaards Malerisamling in Denmark, alongside Jørgen Wadum.