General
- Member - FIDIC International Federation of Consulting Engineers (through NLingenieurs)
- Partner - Honours Programme Delft University of Technology
- Partner - Joint interdisciplinary project (JIP)
- Member - WISE
Sustainability
- Partner - Diverse sustainability initiative
- Member - IEMA
- Partner - Land Governance for Equitable and Sustainable Development network (LANDac)
- Participant - United Nations Global Compact
Buildings
- Member - buildingSMART International
- Member - Council on Tall Buildings and Urban Habitat
- Partner - Smart worksplace
Infrastructure
- Partner - CCAM
- Member - IPFA International Project Finance Association
- Member - SDIA
- Founder - Train2EU
Water
- Member - Alliance for Water Stewardship
- Partner - Climate Campus
- Partner - EcoShape
- Member - Future Water Association
- Member - Netherlands Water Partnership
- Member - SWAN Forum (via Aquasuite)