Leadership team

Alice Vieillefosse has 15 year experience on energy sector on innovation and security of supply. She worked on various positions within French ministries and at EDF Energy. She is Engineer of the corps des ponts, des eaux et des forêts and graduate of IFP School.
Alice Vieillefosse leads the company under the presidency of José Noldin, in all its dimensions, including engineering, construction, industrial commissioning, mobilization of necessary investments and commercial development.

Sybille Grandgeorge has over 20 years of experience in infrastructure finance. She held various leadership roles in investment banking where she has led strategic low carbon transactions across Europe, the Middle East, Africa, Asia, and the Americas in sectors such as green hydrogen, batteries, offshore wind, and bioenergy. Sybille is a graduate of HEC Paris.

Emmanuelle Justum has over 25 years of international experience across the energy, finance, and industrial sectors in France, USA and Germany. Emmanuelle Justum leads GravitHy’s leagal and compliance organization. She has held senior leadership roles within an American hydrogen pioneer, a major French bank with international reach, and a European leader in industrial technologies, successfully managing complex legal operations in mergers and acquisitions, project financing, governance, and regulatory affairs.

Fabrice Zuddas has 30 years of international experience in industrial project management. He held senior roles at Imerys, including VP of Industrial Projects. He specializes in project governance, engineering, and execution.
Fabrice is a graduate of École des Mines de Saint-Étienne.