Nicolas Bacca is a smart-card specialist. He created BTChip, regarded as the first bitcoin hardware wallet.
In 2014 a group of French crypto builders came together in Paris under the Ledger name. Bacca was among them, and he brought the chip.
Ledger turned a smart-card chip from banking into a pocket-sized safe for crypto keys. Bacca is a co-founder and the CTO.
Eric Larchevêque was CEO until 2019. Ledger's other co-founders are Thomas France, Joël Pobeda and David Balland.