Our full-time staff is complemented by a range of associate seasoned sectoral experts. We take an interdisciplinary approach to bringing the most knowledgeable professionals to deliver high added value.
Olivier Levallois
Founding Director
Olivier has been helping NGOs, climate funds & corporates navigating and benefiting from the compliance and voluntary carbon markets and climate finance since 2009.
Guy Warren
Head of Advisory Services - Climate Change & Carbon Markets
Guy is a qualified lawyer, a Fellow of the Institute of Chartered Foresters, and the author of numerous research papers on forestry markets and investment trends.
Colin Green
Senior Consultant
Colin has over 12 years of international experience in sustainability consulting, driving solar innovation, and facilitating carbon finance registration around the world.
Shevanti Nefdt
Consultant
Shevanti has an extensive foundation in biology and ecology, as well as a strong environmental policy background. She has delivered HAMERKOP work in the field around the world.
Michael Tye
Consultant
Michael has degrees in economics and environmental management and supports international emission reduction projects related to renewable energy and afforestation. He specialises in biochar.
Maëna Raoux
Consultant
Maëna holds an MSc in Climate Change, Management, and Finance from Imperial College London. She also has experience working as a Sustainability Analyst at a leading agency in Paris.
Zak Jacobs
Consultant
Zak holds a BSc in Forestry Science. He has extensive experience in forestry, carbon, and sustainable resource management.
Paul Stouffer
Communications Lead
Paul earned an MA from the University of the Arts London, where he studied sustainable design. He is passionate about combining design with science to improve public engagement with social and environmental issues.
Dr Géraldine Bouveret
Managing Director, Singapore
Géraldine holds a PhD in Mathematics and is an expert in sustainable finance and NbS, applying quantitative risk modelling to assess transition risks and support climate-aligned investment strategies.
Christophe Boyer
Senior Consultant
Christophe has degrees in Ecological Restoration and Forest & Conservation Sciences. He has worked on a number of conservation and restoration projects and is passionate about indigenous-led forest resource management.
Francisco Macedo
Senior Consultant
Francisco has over 7 years of experience in strategy consulting and climate finance. He holds a double Master's Degree in Sustainable Forest and Nature Management and a Master's in Corporate Sustainability.
Tatiana de Liedekerke
Consultant
Tatiana has a background in Climate Change, Management, and Finance, as well as Political Studies. She is passionate about using carbon finance to improve the resilience of vulnerable communities and ecosystems.
Hazel Herbst
Consultant
Hazel holds a dual MSc in Global Change, Ecosystem Science and Policy from UCD, Ireland and JLU, Germany. She has extensive experience researching and measuring socio-ecological systems and restoration efforts and is passionate about community-led conservation.
Solène Kechavarzi
Associate Consultant
Solène holds a master's degree in Biodiversity and Conservation from UCL. Her research has focused on modeling ecosystem services and predicting the impacts of climate change.
Abbey Douglas
GIS Specialist
Abbey holds an MSc in Geology and is a geospatial specialist with a strong background in geology, remote sensing, and GIS.
Where We Work
100+ organisations served across 50+ countries (and counting)
OUr Experience
Our experts are passionate about helping organisations with ambitious programmes. We have strong technical expertise and commercial focus.
Our experts have experience working at HAMERKOP with private project developers and commodity trading houses, public institutions (e.g. European Union, World Bank, AFD, SNV, GGGI), and NGOs (e.g. Practical Action, Clean Cooking Alliance, Oxfam International, Blue Ventures, IUCN).
We have a strong understanding of international regulations, sources of funding, innovative financing mechanisms, development issues and international organisation requirements. We follow international climate change negotiations and initiatives on a continuous basis to better inform our clients on their next steps. We care for our clients to take commercial advantages from their actions when relevant.
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