
Chief Technology Officer
Charles Guillemet has been CTO of Ledger since 2017, is an expert in cryptocurrency security, author of numerous publications on hardware and software security, and a graduate of ENSIMAG.

Board Member
Ian Rogers, an ISEB-certified professional based in London, specializes in software testing and software quality, with recognized experience in e-commerce and blockchain projects.

Cofounder
Nicolas Bacca is a graduate engineer from ENSICAEN, an expert in card systems and digital security, who has worked at Oberthur and co-founded Ledger, a leader in security solutions for cryptocurrencies.













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