Our board of directors


Following his commitments in the early 1990s with the humanitarian NGOs Médecins Sans Frontières, Action Contre la Faim, Médecins du Monde and Enfants du Monde Droits de l’Homme, he joined La Guilde in 2011.

As the Director of development programs, he is in charge of post-crisis, development and sustainable development projects, as well as the Agency for Micro Projects. Olivier is also the Executive Secretary of the Humanitarian Coordination and Development, the CHD, which gathers more than forty NGOs.


After a very rewarding first experience in the field of development aid (in Cote d’Ivoire and Madagascar), Marc has worked for more than 30 years in the banking sector, doing international financing activities.

With his various field missions in many emerging countries of Asia, Latin America, Africa, the Maghreb and the Middle East, he has developed a good understanding of the economic and social challenges of development, as well as a real sensitivity to the issues related to poverty and exclusion.

Having now left Natixis, Marc puts his financial and field experience from the corporate world at the service of the association Solidarité Technologique, whose selfless activity and projects fascinate him particularly.


After a few years spent raising her 4 children, while volunteering in various associations, Anne Bénédicte was employed by Rothschild & Cie to create the documentation service, which she managed for 20 years.

Upon her retirement, she put her skills at the service of associations, such as La Guilde, for which she sorted, arranged and electronically indexed their archives. She has also been following the evolution of ST and contributing to its collaboration with La Guilde since 2011.


President of Synergie Solaire. Hélène has been an entrepreneur for 20 years in the mass retail sector and a shareholder in an SME producing renewable energy. She created in 2008 a first foundation dedicated to children. In 2010, as a shareholder of a renewable energy company, she launched the Synergie Solaire endowment fund, which links the French renewable energy sector with NGOs to carry out energy access projects.



After 25 years working for the OFI group in financial asset management for major players in the social economy, Sophie spent 8 years there developing Socially Responsible Investment and sustainable development. Sophie is also an auditor of IHEDN and CHEDE, and a member of the board of directors of “La France Mutualiste”.


Mareva has spent most of her professional career in the energy sector. She is currently General Sales Director of Uniper France, an electricity and gas supplier to industrialists and professionals, and a renewable energy aggregator.

Mareva wanted to put herself at the service of ST and commit herself to a project that combines entrepreneurship and solidarity.


After a career focused on technology transfer to emerging and developing countries, in the field of mineral resources and environmental protection, as well as the evaluation and development of research and development projects, Georges was one of the founders of Gevalor, where he was successively Secretary General and President from 2010 to 2016.

 As such, but also with ST, he especially highlighted the possibilities of supporting waste management projects through carbon finance.


After nearly 30 years of investment with Envie and its network of associations and companies on one hand, which is at the forefront of sustainable development through economic insertion on activities of reuse, recycling and treatment of WEEE or other materials; and militant on the other hand, within local or transnational networks such as the Rreuse Association or on projects of North/South relations with envie Benin or eco Afrique in Togo, Pascal integrates ST as a volunteer, in order to make his expertise available and contribute to the life of the project.