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# Senior System Administrator (Red Hat Linux)

- **Company:** Axians
- **Location:** Brussel, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Linux, DevOps, Identity and Access Management, Python (Programming Language), Linux System Administration, Linux Servers, Open Source Technology, Oracle (Applications), Performance Tuning, Red Hat Enterprise Linux, Ansible, Virtualization Technology, Software Vulnerability Management, Scripting, Cloud Platform System, Containerization, Kubernetes, Information Technology, Deployment Automation, Network Server, Docker, Vmware
- **Published:** May 20, 2026
- **Apply:** https://www.careerjet.be/jobad/be106616e8215f64dac2916829a210105a

## About the Role

* Strong experience with Red Hat Enterprise Linux (RHEL 6/7/8)
 * Hands-on expertise with:

 * Ansible and automation tools
 * Red Hat Satellite
 * Scripting: Shell and/or Python
 * System hardening and vulnerability management
 * Experience managing enterprise-scale Linux environments
 * Virtualization (VMware environment)
 * Monitoring and troubleshooting Linux systems
 * Container technologies: Docker, Kubernetes (preferred)

## Description

We are seeking a Senior System Administrator (Red Hat Linux) to support and enhance monitoring operations within a major EU institution based in Brussels.
You will join a high-impact Operations Centre responsible for ensuring the stability, security and performance of critical IT services across hybrid on-premise and cloud infrastructures.
Responsibilities:

 * Install, configure, harden, and maintain Red Hat Enterprise Linux (RHEL) servers (physical & virtual)
 * Manage ~600 Linux servers including patching, monitoring, troubleshooting, and performance tuning
 * Maintain automated deployment images and server lifecycle processes
 * Administer:

 * Red Hat Satellite (patching & package distribution)
 * Red Hat Identity Management (IdM)
 * System certificates, SSH access, and service accounts
 * Manage infrastructure using Ansible
 * Develop and maintain scripts (Shell, Python) for automation
 * Support infrastructure as code practices
 * Deploy and manage containers using Docker and Kubernetes
 * Support Linux OS environments on Oracle clusters
 * Monitor systems using open-source tools and resolve OS-level issues
 * Handle incident and problem management (analysis, diagnosis, resolution)
 * Ensure security compliance, including vulnerability management and patching
 * Design and implement new Linux-based solutions (including DevOps architectures)
 * Evaluate and test new technologies (proofs of concept, market analysis)
 * Participate in projects with cross-functional teams (network, security, development, architecture)


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