About the Role
We are looking for an experienced Linux Systems Administrator to secure and maintain Red Hat Enterprise Linux (RHEL) environments.
The consultant will focus on vulnerability management, patching and remediation activities, while improving automation and operational efficiency through Red Hat Satellite and Ansible.
Key Responsibilities
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Analyse and assess vulnerabilities affecting Linux servers, based on CVSS scores, exploitability and business impact.
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Review security findings from vulnerability management tools and identify affected packages and components.
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Define, prioritise and coordinate remediation actions, ensuring vulnerabilities are addressed and tracked through closure.
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Administer Red Hat Satellite, including repositories, software content, errata and security advisories.
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Plan and coordinate patch campaigns across different environments.
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Monitor patch deployment, verify compliance and troubleshoot update failures.
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Develop and maintain Ansible playbooks and roles to automate patching, remediation and recurring administration tasks.
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Use Ansible Vault to secure sensitive information and Git to manage automation code.
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Administer and troubleshoot RHEL systems and services.
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Contribute to Linux hardening, security baselines and compliance activities.
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Collaborate with Infrastructure, Cybersecurity, SOC and Risk Management teams.
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Maintain technical documentation and ensure traceability of remediation activities.
Required Technical Skills
Linux Administration
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Strong experience with Red Hat Enterprise Linux (RHEL).
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Good knowledge of RPM, DNF/YUM, systemd, SSH and LVM.
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Linux permissions, privileged accounts and system troubleshooting.
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Bash scripting.
Automation & Configuration Management
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Hands-on experience with Ansible.
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Development of Ansible playbooks and roles using YAML.
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Knowledge of Ansible Vault.
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Git-based version control.
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Infrastructure as Code (IaC) practices.
Vulnerability & Patch Management
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Experience in vulnerability analysis and remediation.
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Knowledge of CVE and CVSS.
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Experience with vulnerability management tools such as Tenable, Qualys or Rapid7.
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Strong knowledge of Red Hat Satellite, repositories, errata and RHSA.
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Patch campaign planning, deployment and compliance verification.
Security & Compliance
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Linux hardening and security baselines.
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Knowledge of CIS Benchmarks.
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Experience with security compliance controls and remediation tracking.
Nice to Have
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Python scripting.
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RHCSA or RHCE certifications.
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Red Hat Ansible Automation certification.
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CompTIA Security+ or equivalent cybersecurity certification.
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Experience in regulated or business-critical environments.
Your Profile
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3 to 5 years of experience in Linux System Administration, with significant hands-on RHEL experience.
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Proven experience with Red Hat Satellite and Ansible.
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Practical experience in vulnerability and patch management.
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Strong analytical and troubleshooting skills.
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Autonomous, rigorous and well-organised.
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Ability to prioritise remediation activities and work with different technical and security teams.
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Strong documentation and communication skills.
Languages
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English: Good professional level required.
- French is mandatory.
Key Information
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Location: Luxembourg
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Start: ASAP
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Duration: 1 month (initial assignment)
