Senior OS Firmware Engineer

We're making the world of digital assets accessible and secure for everyone. Join the mission.

Founded in 2014, Ledger is the global platform for digital assets and Web3. Over 20% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in UK, US, Switzerland and Singapore, Ledger has a team of more than 700 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including the Ledger hardware wallets line with more than 7 millions units already sold in 200 countries.

At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust and Transparency. Hear from our employees how they shape the work we do here .

To sustain the company's growth, Ledger is looking for a new talent to work in the embedded firmware team (in charge of the hardware wallets Ledger Operating System) in order to take care of existing products' firmware evolution and next products’ firmware development.

The Mission

Work on the firmware specification, implementation and testing:

• Implement secure and documented source code,

• Implement the associated SDK aimed at firmware applications development,

• Architecture and source code optimization,

• Ensure the quality of the implemented features with tests,

• Ensure the security of the source code regarding security certifications constraints.

The mission could include the implementation and testing of cryptographic algorithms.

Main interactions will be with

• Security team for software vulnerabilities analysis and corrections,

• Firmware Applications team for SDK evolutions,

• Hardware team for prototyping and production,

• Product team for requirements definition,

Customer Success team for end users issues analysis and corrections.

What we're looking for

• Diploma in Computer Sciences, Engineering or related discipline,

• 4+ years of Embedded C software development,

• Experience on embedded development on secure elements,

• Good communication skills,

Interest in software and hardware attacks and their countermeasures,

Bonus points

• Blockchain knowledge,

• Experience in secure and efficient cryptographic algorithms implementation,

• Interest in software and hardware attacks and their countermeasures.

• Embedded Rust software development,

Advanced Encryption Standard and Elliptic Curve Cryptography

What's in it for you ?

• Equity : Employees are the foundation of our success, and we award stock options so you can share in that success as we grow

• Flexibility : A hybrid work policy

• Social : Frequent social events, snacks and drinks

• Medical : Comprehensive health insurance policy offering extensive medical, dental and vision care coverage

• Well-being : Personal development, coaching & fitness with our dedicated partners

• Vacation : Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days

• High tech: Access to high performance office equipment and gadgets, including Apple products

• Transport : Ledger reimburses part of your preferred means of transportation

• Discounts : Employee discount on all our products