Ancillary activities
- Trustee professor of the Hans-Böckler-Foundation | Hans-Böckler-Foundation | Not remunerated
- Elected member | Academy for Territorial Development in the Leibniz Association (ARL) | Not remunerated
- Vice President | Academy for Territorial Development in the Leibniz Association (ARL) | Not remunerated
- Since 2025: Vice President of the German Academy for Territorial Development in the Leibniz Association (ARL) (elected as member in 2008 and re-elected in 2019)
- Since 2022: Member of Editorial Board "Buildings & Cities"
- Since 2021: Member of the promotion committee of the Faculty of Geosciences
- 2020-2024: National Representative, Council of Representatives of the Association of European School of Planning—AESOP
- Since 2018: Member of Editorial Board "Urban Transformations"
- 2018-2023: Director of the Research Hub "Transforming Infrastructures for Sustainable Cities", Utrecht University
- 2018-2023: Member of Program Board, Theme "Pathways to Sustainability", Utrecht University
- 2016-2019: Co-director of the Research Training Group "Critical infrastructures: construction, functional crises and protection in cities", TU Darmstadt (Germany)
- Since 2016: Member of Editorial Board "Competition and Regulation in Network Industries"
- 2014-2023: Member of the scientific advisory board of the German Institute of Housing and Environment
- Since 2009: Trustee professor of the Hans-Böckler-Foundation