Programme Manager Sourcing

21 july 2026

Responsible sourcing of raw materials, transparency in the chain and reducing environmental impact are high on the agenda in the international growing media sector. Do you want to bring parties together, help accelerate sustainable developments and build widely supported certification schemes? Then this role at RHP could be for you!

RHP is the international knowledge centre for potting soil and growing media. Our quality marks are used worldwide by substrate producers and raw material suppliers. From our office in ’s-Gravenzande, the Netherlands, we work every day on the quality, safety and sustainability of growing media for professional horticulture and the consumer market. To strengthen our team, we are looking for a:

(32–40 hours per week)

As Programme Manager Responsible Sourcing, you will be responsible for the further development and positioning of the Responsibly Produced Peat (RPP) and Responsibly Produced Coir (RPC) certification schemes, and you will support their practical implementation among raw material and substrate producers.

You will work in an international environment with representatives of companies, scientists, trade associations and non-governmental organisations. Connecting people, motivating stakeholders and guiding decision-making processes are an important part of your work.

• Further develop and implement certification schemes for responsible production and sourcing
• Guide international consultation and decision-making processes
• Create support among companies, stakeholders and supply chain partners
• Translate complex sustainability themes into practical applications
• Represent RHP in international networks and projects

Do you feel at home in an international environment and enjoy bringing different interests together in a shared approach? Then we are looking for you!

We are looking for someone with:

• Higher professional or academic working and thinking level
• Relevant experience in sustainability, environment or certification
• Experience with stakeholder management and decision-making processes
• Good command of Dutch and English
• Affinity with the horticulture and/or growing media sector

At RHP, you will join a small, expert and committed team. You will have plenty of room and responsibility to help shape important sustainability issues within a sector that is developing rapidly.

We offer, among other things:

• A gross monthly salary of €4,100 to €6,000 based on full-time employment, depending on knowledge and experience
• 27 days of annual leave based on full-time employment
• Guidance and introduction to the sector and international supply chains
• Many international contacts
• A versatile role with visible impact on sustainability and responsible entrepreneurship

Are you our new Programme Manager Responsible Sourcing? If you have questions about the role, contact Maureen Kuenen, Executive Officer, via (Use the "Apply for this Job" box below).