Senior Firmware Engineer

About Ledger

We’re a team of experts pushing the limits of what’s possible, united by our common goal to unlock true freedom through digital ownership, making technology accessible for all. We believe in a world where users, creators and enterprises manage their value with ownership and freedom. Our curiosity drives us to innovate, empowering individuals on a global scale. We believe change is constant and our team moves forward as one, with a culture of problem-solving where every employee is empowered and supported to challenge tradition and create solutions. Our mission is simple: to make self-custody accessible and give people the keys to their own financial futures. If you want to make a true impact, we want you to join us at Ledger.

At Ledger, we’re proud to be the global platform for digital assets and Web3, with over 20% of the world’s crypto assets secured through our Ledger devices. With our headquarters in Paris, and offices in Vierzon, Grenoble, Montpellier, London, Portland, Geneva, Zurich and Central Singapore, we have a team of around 600 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 7.5 millions units already sold in 200 countries.

The team

The company is looking for a new talent to work within the Enclave team responsible for building a secure “Enclave”, the trusted backend of Ledger products powered by Hardware Security Modules (HSMs) used across all our business units.
The team provide a firmware that embed a virtual machine to provide secure capabilities and write also the backend and tooling that serve this capabilities to the other backend teams

What you’ll be doing

Work on the firmware specification, implementation and testing:

• Implement secure and documented source code.

• Implement the associated VM’s SDK and backends.

• 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.

• Work cross functionally with Security team for software vulnerabilities analysis and corrections, Firmware and Backend teams for SDK and services evolutions, Infrastructure teams for requirements definition.

What we're looking for

• Diploma in Computer Sciences, Engineering or related discipline.

• Expertise with embedded C software development

• Knowledge of the cryptographic algorithms

• Good communication skills.

• Interest in software security.

• Experience with security products.

• Expertise embedded Rust software development is a plus.

• Experience with gRPC, Protobuf, docker, kubernetes technologies is a plus.

• Experience with python, java or go languages is a plus.

• Interest in blockchains and crypto currencies is a plus.

At Ledger, we are dedicated to continually investing in our employees which is why we offer more than just salaries; we provide comprehensive compensation packages that include a wide range of benefits. Here are some of the benefits you can look forward to:

• Flexible work options - Our hybrid policy allows employees to work from home up to 3 times per week

• Health & Wellness support - Health and Life Insurance.

• Financial growth opportunities - Employees can become shareholders in Ledger as well as other financial benefits depending on your country of work.

• Commuter allowance - Ledger offers a commuter allowance to contribute to your preferred means of transportation.

• Learning & Development - A comprehensive suite of training solutions providing a personalised learning experience for every employee.

For regionally specific benefits, your Talent Acquisition contact will be able to provide you with more information.