Embedded Software Engineer – Rust

Founded in 2014, Ledger is the global leader of security solutions and infrastructure for cryptocurrencies and blockchain applications, with more than 4 million users in 165 countries. Ledger combines

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 15% of the world’s crypto assets are secured through our Ledger Nanos. Headquartered in Paris and Vierzon, with offices in London, New-York 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 4 millions units already sold in 180 countries.

At Ledger, we embody the values that make us unique: Pragmatism, Audacity, Commitment, Trust and Transparency. Have a look at our Origins video here.

To sustain the company’s growth and to better meet the challenges, the Ledger Vault firmware team, responsible for developing and maintaining the code that will be executed in the HSM platform, wants to strengthen its team.


  • Participate in the design of a new architecture for the Ledger Vault,
  • Hands on porting part of the existing C code to RUST,
  • Add support of new blockchains in the platform,
  • Improvement of our software development tools, patterns and overall product security architecture and work closely with our internal security team,
  • Interaction with Internal Software engineering teams and Product teams working on Ledger Vault,
  • Add new ambitious product features.


  • Diploma in Computer Science,
  • Engineering or similar field,
  • Relevant experience in Rust,
  • Relevant experience in C with 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),
  • Being comfortable with containerization and consuming/exposing services over different protocols such as REST or gRPC.

Nice to have

  • First experience in a secure environment (HSM, TEE, secure element),
  • Interest in computer security,
  • Good knowledge of blockchain technologies,
  • Knowledge of consensus protocols,
  • Knowledge of INFRA requirements and tools is a plus,
  • First experience with GO language is a plus.


  • 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: Annual company outing for Ledgerdary Days, plus 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.

Ledger guarantees equal opportunity for all during the recruitment process, without any distinction of gender, ethnicity, religion, sexual orientation, social status, disability or age.

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