Our team
at your service
Benjamin Perret
Benjamin Perret has over 15 years of experience working with leading public and private organizations, supporting their communication strategies and advising their executives. His career includes roles at Caisse des Dépôts et Consignations, Groupe ADP, Fnac Darty, and EDF. Earlier in his career, he developed his expertise in influence and financial communication at Ogilvy and Havas.
From 2022 to 2025, he served as President of Entreprises et Médias, the association for communication directors of major corporations. He holds degrees in political science and finance.
Sacha Mandel
Sacha Mandel embarked on his entrepreneurial journey in 2015, joining Majorelle PR & Events and creating Lucy – the first software for public opinion and consumer research based on a predictive and representative panel of 100,000 French citizens. A specialist in corporate and executive communication as well as judicial communication, he provided strategic support to Jean-Yves Le Drian and the French military. Sacha honed his expertise in public affairs and media relations at Havas and studied history and political science.
Laura Lacoste
For nearly eight years at Majorelle PR & Events, Laura Lacoste guided numerous corporate clients and public figures in analyzing and defining their influence strategies across digital and traditional media. In 2025, she joined Nation Advisors to advise clients on their media and digital presence. An expert in public opinion analysis, she maps key stakeholders, deciphers how opinions are formed, and ensures that clients make informed communication strategy decisions based on clear and actionable data. Laura holds a Master’s in Digital Communication and has worked within the digital division of a major French corporation.
Corentin Marsac
Corentin Marsac joined Nation Advisors after four years as a project director at Majorelle PR & Events, where he supported numerous CEOs, major industrial groups, and startups in their influence strategies, business development, and reputation protection—both during crises and sensitive communications. Prior to this, he spent six years managing media relations, influence strategies, and social media for Groupe ADP in France and internationally (Paris Aéroport). Earlier in his career, he worked for nearly three years in a digital agency, advising major corporations and government ministries on institutional communication and influence strategies. Corentin holds a degree from Sciences Po Bordeaux and a Master’s in Public and Political Communication.
Alexandra Grand
Alexandra Grand joined Nation Advisors after spending a year at Majorelle PR & Events, analyzing and advising on the media and digital impact of public figures, executives, and companies. Previously, she designed and implemented the digital, event, and content strategy for a sports federation. Alexandra holds a degree in Economics and Management and a dual Master’s in Communication and Digital Marketing.
Paul Merveilleux Du Vignaux
Since 2025, Paul Merveilleux du Vignaux has supported Nation Advisors clients in understanding, monitoring, and mapping their key online audiences. A specialist in digital public opinion, he provides insights into opinion trends, reputation risks, and communication opportunities with new audiences. He holds a Bachelor’s in International Relations and a Master’s in Brand Strategy. Before joining Nation Advisors, he worked in strategic planning for multiple agencies in Belgium and Paris and spent five years at Majorelle PR & Events.
Corentin Verly-Lagadec
Corentin develops advanced statistical methods and implements data mining techniques to optimize recommendations and provide data-driven decision-making for executives. At Nation Advisors, Corentin designs and deploys tailor-made IT solutions, integrating the latest AI innovations. He extracts and analyzes strategic corporate and social web data, offering insights into online reputation management and customer experience strategies.
Fleur Douet
Fleur Douet is partnering with Nation Advisors after two years of collaboration with Majorelle PR & Events. With 15 years of experience in consulting, marketing, and communications—spanning corporate roles at Danone and VINCI, ministerial positions at Bercy (serving as Press and Communications Advisor to Olivia Grégoire), and roles at the French Senate, as well as agency and consultancy experience at La Netscouade and Fabernovel—she brings her expertise to defining and executing communication strategies for impact-driven companies and their leaders.
Her expertise lies in ESG and Tech, where she excels at building and engaging communities around compelling narratives. Fleur holds a degree from Sciences Po Bordeaux and a Master’s in Public Affairs and Interest Representation.
Benjamin Journo
Benjamin Journo joined Nation Advisors after a first experience with Sacha Mandel, which he began three years ago. Specializing in artificial intelligence and data management, he designs data mining software and uses statistical methods to extract insights from social data, contributing to executive decision-making. Benjamin develops and implements custom IT solutions, integrating the latest innovations in artificial intelligence.