Lead Firmware Applications Engineer

Paris, France /
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 a new talent to lead the embedded applications development team, which is one of three sections composing the Firmware Engineering team.

The applications for our hardware wallet products include cryptocurrencies support as well as key management and security protocols (like PGP, SSH and U2F).

They are:
- Implemented in embedded C and in the medium term, in embedded Rust as well
- Tested with Python or JS


    • Technically lead a team of 3+ people
    • Synchronize, prioritize and ensure the deliveries of the team’s activities
    • Contribute to developments and continuous integration of embedded applications
    • Contribute to innovation (for instance new cryptocurrencies, security-related applications)
    • Synchronize and support our third-party developers community

Main interactions:

    • Manager of the Firmware Engineering team for direct reporting
    • OS part of the Firmware Engineering team for SDK evolutions
    • Security team for software vulnerabilities analysis and corrections
    • Product team for the team’s activity synchronization and requirements prioritization
    • Ledger Live team for activities synchronization within the Ledger B2C ecosystem
    • Customer Success team for end users issues analysis and corrections
    • Third-party embedded application developers for support and issues analysis


    • Required - Diploma in Computer Sciences, Engineering or related discipline
    • Required - Excellent communication skills and ability to summarize
    • Required - Management experience of a small team of engineers

Technical requirements:

    • Required - 5+ years of Embedded C software development
    • Preferred - 3+ years of Python software development
    • Preferred - Applied cryptography general knowledge
    • Preferred - Interest in software and hardware attacks and their countermeasures
    • Desired - Rust software development
    • Desired - Blockchain interest and/or knowledge


    • 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