Job Title: Red Hat Enterprise Linux System Administrator Location: Brussels, Belgium (Hybrid: 3 days onsite, 2 days remote)
Day Rate: €430/day
Role Overview
We are seeking a skilled Red Hat Enterprise Linux System Administrator to manage and maintain a large-scale Linux server environment (~600 servers) and support containerized applications. The role involves collaborating with IT, development, network, and security teams to design, deploy, and optimize infrastructure, automate processes, and implement DevOps practices.
Key Responsibilities
Install, configure, harden, and maintain Red Hat Linux servers (physical and virtual)
Apply security patches, manage images for automated deployments, and monitor system health
Manage user accounts, application service accounts, certificates, and SSH keys for non-interactive access
Administer servers using Ansible and manage containers on Docker hosts and Kubernetes clusters
Manage RH Satellite for package distribution and RH IdM for admin users
Support OS management of Oracle physical clusters
Participate in incident and problem management, troubleshooting, and operational improvements
Contribute to design, implementation, and migration of new applications and infrastructure solutions
Prepare operational guidelines, documentation, training materials, and implement procedures
Conduct capacity planning, performance assessments, and strategic technology studies
Follow ITIL best practices and maintain SLAs for operations
Required Skills & Expertise
Red Hat Linux 6.x–10.x
Ansible and automation scripting (Shell, Playbooks, Python)
RH Satellite for patch management
System hardening, vulnerability management, and security patching
Virtualization environments
DevOps, Docker, Kubernetes, container technology
ITIL best practices for ICT operations
Knowledge of human resources aspects of operations: competencies, workloads, training, change management
Experience in architecture and technology selection, installation, configuration, testing, and operations
Recent hands-on experience with Linux server operations, monitoring, and SLAs
Desirable Skills
Enterprise environments including SAN technology
VMware ESX, vCenter
Hyperconverged environments like Nutanix AHV, Prism Central
Infrastructure as code, hybrid cloud, AWS, Azure
Experience with complex enterprise applications and operational tools