Calliste D. is currently the Chief of Staff at JARNIAS, a position held since 2025. They previously served as a Chief Marketing Officer right-hand at Nestor in 2019, where they contributed to a B2C to B2B pivot strategy. Calliste has completed internships in project management at Accor, strategic studies at La Poste Groupe, and strategy projects at TF1 Group. They hold a Master in Management from ESCP Business School and a Master's degree in Business Administration from Universidad Carlos III de Madrid. Additionally, they participated in an exchange program at Hanken School of Economics.
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