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Ledger Logo Ledger · IT - Administration

Security Engineer Analyst

France, Paris · Job Posted November 05, 2025
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Job Description

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. If you are a final-year student in computer security or networks with a strong interest in Security with a particular interest in Zero Trust and infrastructure-level security, join Ledger for a six-month internship within the Cyber Security Engineering team to help design, test, and improve our ZTNA and Network Security Architecture. You will work closely with Security Engineering, Infrastructure/SRE, and Platform teams on production-grade environments for Ledger internal infrastructure.

Job Responsibility

  • Work with Security Engineering and Infrastructure / SRE and IT teams to strengthen Ledger’s network and access security model
  • Map and document application and admin flows (who/what/where) and propose Zero Trust patterns (per-app access, identity-aware gateways, strong auth)
  • Contribute to PoCs and integrations for ZTNA / SASE / secure access solutions (e.g. controlled access to cloud consoles, internal admin tools, and critical SaaS)
  • Help define and document reference architectures, diagrams, and runbooks for secure remote access and network security
  • Where relevant, contribute small scripts/tools (Python, shell, etc.) to automate validation, configuration checks, or data collection.

Requirements

  • Solid understanding of network fundamentals: TCP/IP, routing, DNS, VPN, HTTP(S), TLS
  • Good grasp of core security concepts: Zero Trust, least privilege, segmentation, identity- and context-based access
  • Comfortable with Linux environments and at least one scripting language (ideally Python) plus basic Git usage
  • Interest in cloud environments (AWS/GCP/Azure or similar) and modern access patterns (bastions, proxies, SASE/ZTNA)
  • Ability to read and challenge technical documentation and propose pragmatic improvements
  • Proactive, curious, and willing to dive into low-level technical details
  • Interest in Web3 and hardware wallets is a plus and provides useful context on Ledger’s ecosystem.

Nice to have

Interest in Web3 and hardware wallets.

What we offer

  • Comprehensive compensation packages that include a wide range of benefits
  • Regionally specific benefits.
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