Ledger

www.ledger.com

11 Jobs

707 Employees

About the Company

Founded in Paris in 2014, LEDGER is a global platform for digital assets and Web3. Ledger is already the world leader in Critical Digital Asset security and utility. With more than 6M devices sold to consumers in 200 countries and 10+ languages, 100+ financial institutions and brands as customers, 20% of the world’s crypto assets are secured, plus services supporting trading, buying, spending, earning, and NFTs. LEDGER’s products include: Ledger Stax, Nano S Plus, Nano X hardware wallets, LEDGER Live companion app, [ LEDGER ] Market, the world’s first secure-minting and first-sale distribution platform, and Ledger Enterprise. With its ease of use, LEDGER allows a user to begin investing in digital assets and ultimately, achieve financial freedom in a safe and stress-free environment.

Headquartered in Paris and Vierzon, with offices in London, New York and Singapore, Ledger has a team of more than 900 professionals developing a variety of products and services to enable individuals and companies to securely buy, store, swap, grow and manage crypto assets – including more than 6 millions devices already sold in 180 countries.

Ledger combines either Nano S Plus or Nano X and the Ledger Live app to offer consumers the easiest way to start their crypto journey while maintaining full control over their digital assets. With its ease of use, Ledger allows users to begin investing in digital assets and ultimately, achieve financial freedom in a safe and stress-free environment, with education provided by its Ledger Academy and Quest.

In addition to consumer products, Ledger has also developed Ledger Enterprise, a digital asset custody and security solution for institutional investors and financial players.

Listed Jobs

Company Name: Ledger
Job Title: Senior OS Firmware Engineer
Job Description: **Job title**: Senior OS Firmware Engineer **Role Summary**: Lead firmware design, implementation, and testing for Ledger’s hardware wallet operating system. Deliver secure, documented C/C++ code, develop SDKs for application developers, and collaborate cross‑functionally to meet security, product, and hardware requirements. **Expectations**: - Own end‑to‑end development of firmware features and SDKs. - Deliver production‑ready, secure code that satisfies certification standards. - Maintain code quality and performance through rigorous testing and optimization. - Work closely with security, hardware, product, and customer teams to address vulnerabilities, design changes, and user issues. **Key Responsibilities**: - Translate firmware specifications into high‑quality, secure source code. - Design and implement SDKs for third‑party firmware applications. - Optimize architecture and code for performance and size constraints. - Write and execute unit, integration, and security tests. - Analyze and remediate software vulnerabilities in partnership with the security team. - Coordinate with hardware engineers on prototyping, manufacturing, and hardware interface changes. - Participate in requirements definition with product teams and translate user feedback into firmware fixes. **Required Skills**: - 4+ years Embedded C development experience. - Hands‑on work on secure elements and crypto‑secure firmware. - Strong understanding of secure coding practices and certification constraints. - Experience with cryptographic algorithm implementation (AES, ECC) preferred. - Familiarity with blockchain concepts and software/hardware attack mitigation. - Ability to write clear, maintainable documentation. - Proficiency in cross‑functional collaboration and communication. **Required Education & Certifications**: - Bachelor’s or Master’s degree in Computer Science, Electrical Engineering, or related field. - Certifications in embedded systems or security (e.g., MISRA C, ISO 26262) are a plus.

Company Name: Ledger
Job Title: Blockchain Data Scientist Intern (f/m)
Job Description: Job Title: Blockchain Data Scientist Intern (f/m) Role Summary: Integrate into a high‑impact team to analyze large‑scale blockchain data, build data pipelines, develop key performance metrics, and contribute to generative AI projects that support both customer‑facing and internal tools. Expectations: - Complete a 6‑month end‑of‑studies internship with deliverables that influence strategic decisions. - Operate independently, communicate findings clearly to cross‑functional stakeholders, and adapt quickly in a dynamic environment. Key Responsibilities: - Process and analyze massive amounts of blockchain data to extract actionable insights. - Build, maintain, and optimize data pipelines and analytical dashboards. - Define and track business metrics to monitor performance and revenue. - Design and develop generative AI applications for product and operational use. - Collaborate with engineering, product, and business teams to translate data needs into solutions. - Present data‑driven recommendations to senior stakeholders. Required Skills: - Proficient in Python (including libraries such as pandas, NumPy, scikit‑learn). - Strong SQL knowledge for data extraction and manipulation. - Experience with data manipulation frameworks and pipeline tools. - Familiarity with machine learning concepts and generative AI models (e.g., GPT, diffusion). - Analytical mindset, problem‑solving ability, and excellent written & verbal communication. - Interest or background in blockchain, cryptocurrencies, and Web3 ecosystems is a plus. Required Education & Certifications: - Current enrollment in a Bachelor’s, Master’s, or PhD program in Data Science, Computer Science, Statistics, or a related technical field.

Company Name: Ledger
Job Title: Internship - Commercial Legal Team
Job Description: **Job Title** Internship – Commercial Legal Team **Role Summary** Support the Commercial Legal Team in a fast‑paced crypto & Web3 company by managing contracts, conducting legal research, assisting with regulatory compliance, and optimizing legal operations. **Expectations** - Gain hands‑on exposure to all facets of commercial law within the blockchain industry. - Deliver accurate, concise legal documentation and research to facilitate product launches and partnerships. - Demonstrate initiative, resilience, and adaptability in a constantly evolving environment. **Key Responsibilities** - Draft, review and negotiate contracts (marketing, sales, procurement, IP licensing, general commercial). - Manage contract lifecycle: onboarding, execution, archiving, and reporting. - Assist with third‑party onboarding and administrative legal tasks. - Conduct legal research on regulatory, IP, and data privacy matters. - Contribute to dispute handling and contentious issue resolution. - Identify and implement improvements to contract templates, documentation processes, and reporting systems. **Required Skills** - Strong written and verbal communication in English (drafting, presentation). - Clear understanding of commercial, sales and technology law; knowledge of IP, data privacy desirable. - Excellent analytical, drafting, and presentation abilities. - Ability to manage ambiguity, prioritize tasks, and thrive under pressure. - Detail‑oriented, pragmatic, and proactive with self‑motivation. - Collaborative, trustworthy, and flexible in a fast‑moving industry. **Required Education & Certifications** - Trainee lawyer, or graduate of a Master II / DJCE in Business Law, New Technologies, or Multimedia Law (preferred focus on commercial, sales, and technology law). - Prior internship or practical experience in commercial law. ---

Paris, France

On site

01-10-2025

Company Name: Ledger
Job Title: Senior Software Security Engineer
Job Description: Job Title: Senior Software Security Engineer Role Summary: Lead security engineering for consumer-facing services, performing offensive security testing, vulnerability assessment, threat modeling, and development of security tools to enhance product resilience. Expectations: - Conduct continuous penetration testing and threat analysis of backend, API, and cloud components. - Create and maintain automated vulnerability detection tools and exploitation frameworks. - Establish secure coding practices and guide engineering teams on remediation. - Deliver findings to both internal stakeholders and external security conferences. Key Responsibilities: 1. Identify, exploit, and remediate vulnerabilities in backend services, APIs, and supporting infrastructure. 2. Design and implement automated security analysis tools. 3. Perform threat modeling and security assessments for Ledger services, including DeFi and Ledger Live. 4. Promote secure coding guidelines and conduct security training for engineering teams. 5. Present technical results at academic and industry conferences. Required Skills: - Strong web/backend penetration testing experience (penetration testing methodologies, OWASP Top 10). - Proficient in Python and Rust, with secure coding expertise in these languages. - Deep knowledge of Kubernetes and cloud infrastructure security. - Familiarity with Scala (plus). - Experience with HSM security and exploitation techniques. - Understanding of mitigation strategies against common exploits. - Ability to design secure architectures and develop security standards. Required Education & Certifications: - Bachelor’s degree (or equivalent) in Computer Science, Cybersecurity, or related field. - Professional security certifications such as OSCP, OSCE, CEH, or equivalent preferred.

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