Pierre leads ClientEarth’s Global Public Affairs and Policy team, overseeing the organisation’s influence on decision-makers to achieve the systems change pursued in its strategy across the world. This includes targeted advocacy and policy insights in all its areas of work throughout the life cycle of the law.

With his team at ClientEarth, Pierre specialises in cross-cutting strategic policy advocacy, supports our legal teams, and leads on flagship policy initiatives to develop a wide range of environmental campaigns and files around the world.

In a fast-moving environment for policy makers, the team is working on finding the most impactful strategies to influence them and convince them to adopt our positive solutions to protect the environment and people across multiple jurisdictions. With his experience in advocacy, Pierre supports the organisation in developing the best tools and skills to accomplish this mission.


Before joining ClientEarth, Pierre was the Executive Director of Advocacy at WWF in France where he worked for a decade leading campaigns and programs on a diversity of environmental issues, from climate and energy to nature and plastics, collaborating at multiple levels throughout the WWF’s global network. Prior to this, Pierre worked with the United Nations in New York on the preparation of the Rio+20 Summit and corporate climate engagement. He engaged significantly with activities around the Climate COP21 to influence the establishment of the Paris Agreement, and has substantial experience in building and developing high-impact activities from newly-established teams.


Pierre graduated from Sciences Po Paris with a master’s degree in international relations and sustainable development, as well as a master’s degree in hydraulics and fluid mechanics engineering.

Using the power of the law’ is a mission statement that strikes a chord with me and is something I am really proud to embark on with ClientEarth. Combining the organization’s legal prowess with policy, advocacy and influencing tools to secure ambitious environmental laws from decision-makers is a thrilling mission.