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Nicolas Sironneau

Chief of Staff
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Nicolas connects strategy, policy, and business impact

He is Chief of Staff at Aleph, where he supports strategic planning, portfolio alignment, and partnerships across ventures.

He studied at Sciences Po, the Massachusetts Institute of Technology (MIT), and Bocconi University, and also chairs the Technology & AI program at Fondation Concorde, working at the intersection of technology and society.

Before joining Aleph, Nicolas spent six years in finance (Société Générale, Ardian) and later joined Boston Consulting Group (BCG) as a manager, helping organizations design strategies that combine growth and positive impact.