Jérôme Léger

Chief Architect & Head of Architecture & Design Authorities

Groupe Crédit Agricole

Jérôme Léger is the Chief Architect of Groupe Crédit Agricole, serving as Head of Group Architecture & Design Authorities. He leads the bank’s global architecture function, guiding a community of more than 500 architects across 15+ European countries and over 30 international markets. In this role, he shapes Crédit Agricole’s enterprise-wide architectural vision, ensuring coherence, resilience, compliance, and innovation across one of Europe’s largest financial groups. 

With over 25 years of experience across banking, telecommunications, and media, Jérôme is recognised for translating complex technological visions into practical, enterprise-scale execution. His expertise spans hybrid and cloud architectures, interoperability, data governance, cybersecurity, regulatory alignment (PSD2, GDPR, BCBS239), and transformation of large organisations. 

Before becoming Chief Architect, Jérôme served as Deputy Group Chief Data Officer and Head of the Group Data Management Office, where he designed Crédit Agricole’s group-wide Data Usage Code and established its first unified Data Management Framework. He previously directed the bank’s PSD2 program, making Crédit Agricole the first systemic French bank to achieve full DSP2 compliance. 

Jérôme also serves on the Board of Directors of Gaia-X, where he contributes to the practical implementation of sovereign, interoperable European data and cloud infrastructures. 

He is known for his philosophy of “making it simple from vision to results,” combining strategic foresight with hands-on delivery to drive real organisational impact.