Secure Enclave Application Engineer / Firmware Apps

Paris /
Engineering – Firmware /
Founded in 2014, Ledger is a leader in security and infrastructure solutions for cryptocurrencies and blockchain applications. Headquartered in Paris, Vierzon and New York, Ledger has a team of +200 professionals developing a variety of products and services to safeguard cryptocurrency assets for individuals and companies – including the Ledger hardware wallets line already sold in 165 countries. To sustain the company's growth, Ledger is looking for new talents to work on its secure enclave  applications for Ledger Vault


    • Development of applications running on BOLOS Enclave for our Ledger Vault product
    • to improve support of existing blockchains such as bitcoin, ethereum, ... and add support for new ones to add new exciting product features
    • Improvement of our software development tools, patterns and overall product security architecture
    • Interaction with Internal Software engineering teams and Product teams working on Ledger Vault

Requirements and qualifications

    • Diploma in Computer Science, Engineering or similar field
    • Relevant experience in C code cross compilation, optimization and security pitfalls
    • Relevant experience in Python 3 and associated test frameworks
    • Used to work with git and its associated development workflows
    • Experience using cryptography primitives (Hash, symmetric and asymmetric algorithms, ...)
    • Good understanding of blockchain technologies
    • Interest in Rust
    • Interest in reverse engineering and computer security is a plus
    • Being comfortable with containerization and consuming/exposing services over different protocols such as REST or gRPC is a plus


    • Competitive compensation package and ESOP according to the Company policy
    • Flexible working hours, remote-friendly environment,
    • Strong focus on personal development including internal/external trainings and attendance to conferences,
    • Internal talks, technical meetups and hackathons,
    • High performance office equipment,
    • Comprehensive health insurance policy offering extensive medical, dental and vision care coverage,
    • Meal Vouchers with Swile (ex Lunchr),
    • Annual company outing for Ledgerdary Days plus infrequent parties, snacks and drinks,
    • Employee discount on Ledger products.
Ledger guarantees equity for all during the recruitment process, without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age