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Ledger

Ledger

www.ledger.com

12 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 background Company brand
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.
Paris, France
On site
Fresher
16-09-2025
Company background Company brand
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 background Company brand
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.
Paris, France
Hybrid
Senior
30-10-2025
Company background Company brand
Company Name
Ledger
Job Title
Internship | Security Engineer Analyst (ZTNA)
Job Description
**Job Title:** Internship – Security Engineer Analyst (ZTNA) **Role Summary:** A six‑month internship focused on Zero Trust Network Access (ZTNA) and network security architecture. The intern will collaborate with security, infrastructure, and platform teams to design, implement, and document secure access solutions for Ledger’s internal infrastructure. **Expactations:** - Final‑year or recently graduated student in computer security, networking, or related field. - Strong interest in Zero Trust and infrastructure‑level security. - Willingness to learn and apply new security technologies and cloud environments. **Key Responsibilities:** - Map application and admin flows; propose Zero Trust patterns (per‑app access, identity‑aware gateways, strong authentication). - Contribute to PoCs and integrations for ZTNA/SASE solutions (cloud console access, internal admin tools, critical SaaS). - Define and document reference architectures, diagrams, and runbooks for secure remote access and network security. - Develop small scripts/tools (Python, shell) for automation, validation, configuration checks, or data collection. - Collaborate with Security Engineering, Infrastructure/SRE, and IT teams on production‑grade environments. **Required Skills:** - Knowledge of networking fundamentals: TCP/IP, routing, DNS, VPN, HTTP(S), TLS. - Understanding of security concepts: Zero Trust, least privilege, segmentation, identity‑ and context‑based access. - Comfortable with Linux environments; proficiency in at least one scripting language (Python preferred). - Basic Git usage and familiarity with cloud platforms (AWS, GCP, Azure, or similar). - Strong analytical skills, ability to read and critique technical documentation, and propose improvements. - Proactive, curious, and detail‑oriented. **Required Education & Certifications:** - Current enrollment or recent completion of a degree program in computer security, computer science, network engineering, or a related discipline. - No specific certifications required; knowledge of certifications such as CCNA, CompTIA Security+, or relevant cloud vendor credentials is advantageous.
Paris, France
On site
05-11-2025