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Ledger Logo Ledger · IT - Administration

Staff Infrastructure System Engineer

France, Paris · Job Posted October 29, 2025
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Job Description

Staff Infrastructure System Engineer role at Ledger, focused on designing, configuring and administering systems infrastructure including core services, internal tools, monitoring solutions and bare metal servers. The position involves researching and implementing new technologies, supporting continuous integration tools, and ensuring high availability of systems in a digital assets and Web3 platform environment.

Job Responsibility

  • Design, configuration and administration of systems infrastructure including core services, internal tools, monitoring solutions and bare metal servers
  • Researching, piloting, integrating, and implementing new technologies and infrastructure solutions
  • Supporting and contributing to the delivery of source code version management, continuous integration tools, and package management solutions
  • Accurately sizing and forecasting systems work packages within the infrastructure domain
  • Act as point of escalation for the design or setup of any systems delivery
  • Monitoring, optimizing and troubleshooting, diagnosing and resolving hardware or software incidents and problems
  • Protecting data, software, and hardware by coordinating, planning and implementing security measures
  • Configuration, monitoring and maintenance of backup and replication routines and organizing disaster recovery readiness
  • Ensure documentation of Ledger's infrastructure systems is up to date

Requirements

  • At least 10 years of experience in Linux system administration and management in a high availability environment
  • Experience with virtualization and containerization environments (K8s, Docker, Proxmox)
  • Hands-on experience with configuration management tools such as Ansible and Infrastructure-as-code solutions such as SaltStack or Terraform
  • Working knowledge of system monitoring tools- especially Prometheus
  • Knowledge of encryption and PKI technologies
  • Highly motivated and self-driven
  • Proven level of autonomy
  • Ability to communicate, convince, explain, and justify choices
  • Honest and realistic
  • Creative problem solving and solutions assessment skills with an ability to identify develop and implement solutions to meet the needs of the business

Nice to have

  • Experience in Public Cloud deployments on AWS
  • Hands-on experience with self-hosted K8s clusters
  • Knowledge of application transport and network infrastructure protocols
  • Experience in Datacenter operations or network devices

What we offer

  • Flexible work options - work from home up to 3 times per week
  • Health & Wellness support - Health and Life Insurance
  • Financial growth opportunities - employees can become shareholders in Ledger
  • Commuter allowance - contribution to preferred means of transportation
  • Learning & Development - comprehensive suite of training solutions providing personalised learning experience
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