[1] Steiner organized the exhibition Backstage: Topology of Contemporary Art at Kunstverein Hamburg with Stephan Schmidt-Wulffen in 1993,[3] and curated Lost Paradise at Kunstraum Vienna in 1994, exhibiting works by Jeremy Deller, Liam Gillick, Jorge Pardo, Philippe Parreno, and Rirkrit Tiravanija.

[5] In the late 1990s, Steiner headed art associations in Ludwigsburg and Wolfsburg, working with artists such as Angela Bulloch, Ólafur Elíasson, Liam Gillick, Karen Kilimnik, and Philippe Parreno.

[6][7] She modernized the museum's role as a cultural institution,[8] and improved the former East German city's standing in the international art scene.

[9] Steiner exhibited both emerging and established artists such as Jun Yang and Deimantas Narkevičius,[2] as well as Rosemarie Trockel, Sarah Morris, Ólafur Elíasson, Jorge Pardo, and Neo Rauch.

[2] In 2016, Steiner was named director of Kunsthaus Graz,[1][2][12] where she invited collaborations with artists, designers, and collectives such as Niels Jonkhans, Oliver Klimpel, Topotek 1, and Superflex.