Ledger

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

Infrastructure System Administrator - Internship

Job Description

**Job title**: Infrastructure System Administrator – Internship **Role Summary**: Assists in managing Ledger’s on‑premises infrastructure, focusing on access‑management audit, least‑privilege enforcement, and operational reliability. Supports engineering tools’ users, configures systems, and implements monitoring and alerting solutions. **Expectations**: * 6‑month internship term. * Proactive participation in audit, automation, and documentation of infrastructure. * Collaboration with engineering, security, and DevOps teams to close gaps and improve visibility. * Autonomy in performing system administration tasks while communicating decisions effectively. **Key Responsibilities**: 1. Audit and align code‑base access management to best practices. 2. Strengthen policy enforcement and least‑privilege controls across on‑prem and cloud resources. 3. Support engineering tools users, troubleshooting access and tooling issues. 4. Configure, maintain, and administer infrastructure systems, core services, monitoring, and bare‑metal servers. 5. Identify, test, and implement new system technologies and solutions. 6. Contribute to new feature delivery and request fulfillment for infrastructure, development, and DevOps. 7. Forecast and size system work packages; coordinate with technical experts and project managers to deliver on schedule. 8. Maintain accurate documentation and tracking of infrastructure solutions and hardware. **Required Skills**: * Hands‑on Linux system administration in a high‑availability environment. * Experience with configuration management (Ansible, SaltStack). * Familiarity with virtualization and container technologies (Docker, Kubernetes optional). * Working knowledge of monitoring tools, especially Prometheus. * Scripting in Bash and/or Python. * Strong communication, decision justification, and self‑motivation. * Fluent in English; French is a plus. **Required Education & Certifications**: * Current enrollment or recent graduation in Computer Science, Information Technology, or related field. * No mandatory certifications required, but knowledge of Linux administration and CI/CD tools (GitHub, Jenkins) is advantageous.

Paris, France

Hybrid

18-12-2025

Company Name

Ledger

Job Title

Internship - Security Operations (SecOps) - Cloud Attack Simulations & SOAR

Job Description

Job title: Security Operations (SecOps) – Cloud Attack Simulations & SOAR Intern Role Summary: Short‑term internship supporting the SecOps team in creating, testing, and automating cloud‑based threat detection and response. Responsibilities include designing attack scenarios on AWS and EKS/Kubernetes, validating detections in Splunk, CrowdStrike, and Wiz, building SOAR playbooks for automated remediation, and measuring performance metrics (MTTD/MTTR, false positives). Expecations: - 6‑month Master’s student internship. - Hands‑on work with cloud security tools and SOAR platform. - Collaboration with SecOps engineers on incident response and backlog tasks. Key Responsibilities: 1. Design and model realistic attack scenarios aligned with threat‑tactics‑procedures (TTP) for AWS and Kubernetes environments. 2. Generate synthetic test events and validate/adjust detection rules in Splunk, CrowdStrike, and Wiz. 3. Develop SOAR playbooks to automate incident remediation and reduce MTTR. 4. Automate vulnerability management workflows (exposed secrets, priority CVEs) via SOAR. 5. Document scenarios, detections, and playbooks in runbooks and diagrams; maintain a central catalogue. 6. Measure and report impact metrics: MTTD, MTTR, false‑positive rates, and remediation time. 7. Support the integration of new detection rules into the organization‑wide Use Case Factory. 8. Participate in incident response activities and address SecOps backlog items as needed. Required Skills: - Practical knowledge of AWS (IAM, S3, CloudTrail). - Familiarity with Kubernetes/EKS fundamentals (Pods, RBAC, networking). - Understanding of SIEM (Splunk) and SOAR fundamentals. - Basic experience with EDR/Workload Security tools (CrowdStrike). - Ability to write clear documentation and runbooks. - Good technical English (reading/writing). Required Education & Certifications: - Pursuing or completed a Master’s degree in Cybersecurity, Computer Science, Information Security, or related field (internship duration of 6 months). No additional company or location details included.

Paris, France

On site

08-01-2026

Company Name

Ledger

Job Title

Infrastructure Architect/ Knowledge manager - Internship

Job Description

**Job title** Infrastructure Architect / Knowledge Manager – Internship **Role Summary** Assist the Infrastructure Team in improving internal knowledge bases and creating accurate, up‑to‑date documentation of deployed infrastructure. The internship focuses on reviewing, reorganizing, and enhancing Confluence spaces, as well as drafting system documentation from technical sources. **Expectations** * Deliver a complete redesign of the infrastructure Confluence space. * Produce clear infrastructure documentation that can be referenced by engineers and stakeholders. * Develop skills in technical writing, information architecture, and stakeholder consultation. * Explore and recommend AI‑driven support tools for knowledge management. **Key Responsibilities** * Conduct a Confluence space audit: identify outdated content, gaps, and navigation issues. * Gather and interview internal teams to capture needed information and expectations. * Rewrite, update, or archive pages; propose a new hierarchical structure and metadata strategy. * Create documentation for deployed services: research architecture, write structured content, and diagram interactions (Mermaid/ Lucidchart). * Validate content with subject‑matter experts, iterate based on feedback. * Recommend long‑term documentation improvements (templates, workflows, labeling). **Required Skills** * Excellent written and verbal communication in English. * Ability to explain complex technical concepts clearly and concisely. * Strong attention to detail and organizational skills. * Analyst mindset: research, ask clarifying questions, and synthesize information. * Comfortable with Confluence, Markdown, and basic diagramming tools. * Openness to soliciting and incorporating feedback. * Curiosity about AI applications in knowledge management and technical writing. **Required Education & Certifications** * Currently enrolled in a Master’s degree program (any discipline, preferably related to Information Technology, Computer Science, Engineering, or Technical Communication). ---

Paris, France

Hybrid

09-01-2026

Company Name

Ledger

Job Title

Business Analyst - Internship

Job Description

**Job Title** Business Analyst – Internship **Role Summary** An entry‑level role focused on translating end‑user needs into functional specifications, designing and deploying low‑code solutions, integrating Generative AI use cases, managing project milestones, and creating performance dashboards as part of the Business Application Services team. **Expectations** - Deliver detailed functional specifications based on user requirements. - Participate in the design, development, and deployment of low‑code internal tools. - Identify and support integration of Generative AI into business workflows. - Monitor development, coordinate User Acceptance Testing, and manage change‑management activities. - Produce monitoring dashboards to track solution performance. **Key Responsibilities** - Gather and analyze end‑user requirements; produce functional spec documents. - Contribute to the design and deployment of internal tools using low‑code platforms. - Assist in AI integration projects by identifying relevant use cases and facilitating implementation. - Act within IT PMO framework: track progress, organize UAT, support users, maintain project documentation. - Create dashboards and reports to measure and report on solution effectiveness. **Required Skills** - Strong analytical mindset and rigorous written communication. - Ability to model business processes. - Familiarity with low‑code/no‑code development tools. - Understanding of programming concepts (language knowledge is a plus). - Effective stakeholder communication across diverse groups. **Required Education & Certifications** - Current student at an engineering school or pursuing a Master’s degree in Computer Science (or related field). - Prior internship or work‑study experience as a Business Analyst or Project Management Assistant (AMOA) required. - No specific certifications mandatory.

Paris, France

Hybrid

15-01-2026