Since 2019 he has led the Royal Academy of Arts in London and in spring 2025 will assume the directorship of the Frick Collection in New York City.
Previously, he served as director of the Van Gogh Museum in Amsterdam between 2006 and 2019, and worked as a curator of Dutch art at the National Gallery in London.
At Queen's University at Kingston, Ontario, he commenced writing a dissertation on the Dutch painter and archtiect Bartholomeus van Bassen.
Rüger, a specialist in Johannes Vermeer and the Delft School, was appointed curator of Dutch art of the 17th century at the National Gallery in London in 1999.
[2] From April 2006 to 2019, he was director of the Van Gogh Museum in Amsterdam and the Mesdag Collection in The Hague, and was succeeded there by Emilie Gordenker.