Hans has worked since 2008 on sustainable production/sourcing of agro-commodities in Asia South/Central America and Africa. In his work he focused on the development and implementation of:
- Planning tools for sustainable land use planning and green growth strategies
- Training programmes for smallholder farmers on sustainable development through increasing productivity, improving institutional development for palm oil and rubber
- Traceability systems for coffee, cocoa, palm oil and rubber
- Models for access to finance for smallholders in the palm oil and rubber sector
