Senior linux system administrator — space & earth observation

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POSTE

I'm recruiting on behalf of a leading player in the Space Ground Segment / Earth Observation IT services sector. Our client designs, operates, and scales mission-critical platforms used by European and national space agencies as well as private organisations.

To strengthen the IT Infrastructure department, we're looking for a Senior Linux System Administrator to help run and evolve core infrastructure, HPC systems, and cloud platforms that power high-throughput EO data workflows.

What you'll do:

- Install, administer, and maintain physical/virtual servers, workstations, and supporting IT equipment.

- Operate and harden services in Linux (primary) and Windows environments.

- Manage users, directories, and access across mixed estates.

- Support and optimise HPC clusters and cloud workloads used for large-scale EO data processing.

- Ensure reliability, backup/recovery, monitoring, and security across on-prem and cloud components.

PROFIL

Must-have qualifications:

- Degree in Computer Science (or related discipline) or equivalent experience.

- 5+ years in a similar SysAdmin role.

- Deep expertise in Linux administration (system services, packaging, troubleshooting, performance).

- Virtualisation and infrastructure management (VMware).

- Active Directory administration.

- Networking fundamentals and operations (preferably Cisco and Dell).

- Backup administration (e.g., Veeam).

- Monitoring with tools such as Nagios, Observium, SolarWinds.

- Firewall administration (Check Point preferred).

- Infrastructure automation (Ansible).

- Hands-on with cloud infrastructure (design, deployment, ops).

- Solid grasp of security principles (hardening, least privilege, patching).

- Experience administering a Kubernetes cluster.

- English fluency (spoken and written).

- Proven team player.

- Valid EU work permit.

- French is a plus.