Red Hat Linux System Administrator (RHEL 8/9 Migration) | Test Triangle | Dublin, Ireland

Test Triangle; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Test Triangle in Dublin is seeking a seasoned Red Hat Linux System Administrator to lead RHEL 8 to RHEL 9 migrations using Leapp within a hybrid Dublin environment.

The role focuses on administering enterprise Linux environments, implementing migration plans, and ensuring security and performance across VMware-based infrastructure and Satellite management. Strong automation via Ansible and Bash scripting is essential.

Qualifications

• 5+ years of Linux System Administration experience.
• Strong hands-on expertise with Red Hat Enterprise Linux 8 and 9.
• Mandatory experience using the Leapp Upgrade Tool for RHEL migrations.
• Proven experience delivering RHEL 8 to RHEL 9 migration projects.
• Strong VMware administration and virtualization experience.
• Proficiency in Ansible automation and Bash scripting.
• Experience managing Red Hat Satellite 6.14 environments.
• Strong knowledge of LVM, XFS filesystems, and Linux storage management.
• Experience with GRUB configuration and Linux system recovery techniques.
• Strong troubleshooting, analytical, and problem-solving skills.
• Experience supporting enterprise production environments.

Responsibilities

• Administer and maintain enterprise Red Hat Enterprise Linux (RHEL 8 & 9) environments
• Plan, execute, and validate RHEL 8 to RHEL 9 migration projects using Leapp
• Perform pre-upgrade assessments, remediation, and post-migration validation activities
• Manage Linux storage environments including LVM, XFS, and filesystem optimization
• Configure and maintain Red Hat Satellite 6.14 infrastructure
• Implement automation solutions using Ansible and Bash scripting
• Support VMware-based virtualized server environments
• Perform Linux troubleshooting, performance tuning, and root cause analysis
• Execute patch management, system hardening, and security compliance activities
• Manage GRUB configurations, boot processes, and Linux recovery procedures
• Create and maintain system documentation, migration runbooks, and operational procedures
• Collaborate with infrastructure and project teams to ensure successful migration delivery

Skills

Linux system administration

Red Hat Enterprise Linux 8/9

Leapp upgrade tool

VMware administration

Ansible

Bash scripting

LVM

XFS filesystems

GRUB configuration

Linux storage management

Troubleshooting

Tools

Leapp Upgrade Tool

Red Hat Satellite 6.14

VMware vSphere

Ansible

Job description

Job Title

Red Hat Linux System Administrator (RHEL 8/9 Migration) | Test Triangle | Dublin, Ireland

Job Location & Type

Dublin 18, Ireland (Hybrid – 3 Days Onsite)

Contract (Until End of Year, Extension Possible)

Position Summary

Test Triangle is seeking an experienced Red Hat Linux System Administrator to support a large-scale enterprise Linux transformation initiative. The role focuses on administering mission‑critical Red Hat environments and leading RHEL 8 to RHEL 9 migration activities using the Leapp Upgrade Tool.

Responsibilities

• Administer and maintain enterprise Red Hat Enterprise Linux (RHEL 8 & 9) environments
• Plan, execute, and validate RHEL 8 to RHEL 9 migration projects using Leapp
• Perform pre-upgrade assessments, remediation, and post-migration validation activities
• Manage Linux storage environments including LVM, XFS, and filesystem optimization
• Configure and maintain Red Hat Satellite 6.14 infrastructure
• Implement automation solutions using Ansible and Bash scripting
• Support VMware-based virtualized server environments
• Perform Linux troubleshooting, performance tuning, and root cause analysis
• Execute patch management, system hardening, and security compliance activities
• Manage GRUB configurations, boot processes, and Linux recovery procedures
• Create and maintain system documentation, migration runbooks, and operational procedures
• Collaborate with infrastructure and project teams to ensure successful migration delivery

Required Qualifications

• Minimum 5+ years of Linux System Administration experience
• Strong hands‑on expertise with Red Hat Enterprise Linux 8 and 9
• Mandatory experience using the Leapp Upgrade Tool for RHEL migrations
• Proven experience delivering RHEL 8 to RHEL 9 migration projects
• Strong VMware administration and virtualization experience
• Proficiency in Ansible automation and Bash scripting
• Experience managing Red Hat Satellite 6.14 environments
• Strong knowledge of LVM, XFS filesystems, and Linux storage management
• Experience with GRUB configuration and Linux system recovery techniques
• Strong troubleshooting, analytical, and problem‑solving skills
• Experience supporting enterprise production environments

Preferred Skills

• Red Hat Certified System Administrator (RHCSA) certification
• Red Hat Certified Engineer (RHCE) certification
• Experience with infrastructure automation and Infrastructure as Code (IaC) practices
• Knowledge of container technologies such as Docker and Kubernetes
• Experience working on large-scale infrastructure modernization projects