CEO - Environmental Project Director
Holder of a DESS (Bac+5) in Management of agro-sylvo-pastoral systems in tropical zones from the University of Paris - Val-de-Marne (Paris XII) and a Master's degree in biology of populations and ecosystems (Rennes I), Sébastien has a professional experience of nearly 25 years in developing countries (sub-Saharan Africa, Maghreb, Indian Ocean, Pacific Ocean, OCT) in the sector of rural and community development, as well as in the environment.
Its expertise is proven at the level of the procedures of the main donors (EU/FED, AFD, WB/IFC, etc.), in particular through the implementation and/or monitoring/evaluation of international development projects and programs in the form of high-level technical assistance, via for example several experiences in support of the National Authorizing Officer of the European Development Fund.
He has also supervised/carried out numerous missions for the private sector (energy sector and extractive / mining sector) in the framework of ESIA, ESMP, RAP, biological/physical environment inventories, socio-economic studies, value chain/industry studies, strategic studies, Protected Areas, etc.
Managing Director of Oryx Expertise, in addition to his involvement in the coordination of the office's activities and in the development of the company, he continues to be involved in projects, providing his expertise to support clients and teams.
CEO - Community / Land / Resource Management Project Manager
Thomas MANTET holds an engineering degree from the Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES). He has 12 years of experience in the rural world, particularly in the structuring of farmers' organizations.
With more than 10 years spent as a resident in West Africa, particularly in Senegal, he has developed a very fine knowledge of local socio-economic dynamics and the organization of the peasantry, for the valorization of natural resources for production and economic development. He also has a perfect mastery of the aspects of local governance between users and managers for the proper perpetuation of rural engineering infrastructures.
Within this framework, he has been working since 2020 with large industrial and gold mining companies as a project manager for the elaboration of long-term community development strategies, the resulting local economic development plans, and the design/implementation/monitoring of action plans for the valorization of areas, in order to encourage the valorization of natural resources and the economic growth of populations. It is therefore interested in all the strategic components associated with industrial infrastructures, namely: the environment, community organization, local governance, economic development, income-generating activities, information/education/communication at all levels.
Having designed several hydro-agricultural perimeters and having supervised numerous development studies, he has a very good knowledge of hydraulics, agronomy and social aspects of development and farming practices. In this context, he has been working for the last 10 years as an expert in Social Water Management within the Scientific and Technical Committee for Agricultural Water (COSTEA) where he brings his expertise to bear on the various Irrigation Development and Management companies in West Africa, whether in Senegal, Mali, Mauritania, Guinea, Ivory Coast, Burkina Faso, Niger, Chad, etc.
Director of Environment Projects
Marjorie PATRY holds a master's degree in "Ecology-Biodiversity-Evolution" from the Faculty of Sciences of Orsay, delivered in collaboration with the University of Paris-Sud 11, the Pierre and Marie Curie University, the National Museum of Natural History, AgroParisTech and the Ecole Normale Supérieure. Marjorie has been working for 10 years on environmental impact studies of large projects in France (methanization unit, hydrogen power plant, urban extension, etc.) and internationally (hydroelectric dams, solar power plants, wind farms and electric transmission lines) where she developed her skills in impact analysis on the natural environment (physical and biological) and in analysis of critical/essential habitats (IFC, BM/AFD and BAD standards) and ecosystem services. She also has expertise in ecological engineering, invasive species management and wetland compensation/restoration. Through the environmental impact assessments she has participated in, Marjorie has worked in sensitive biodiversity contexts (wetlands and Ramsar areas, dense forest areas, National Park, etc.).
English (UK) 
Français