Senior Linux Administrator

Work arrangement:

Hybrid — office attendance required on Mondays, Wednesdays and Fridays.

Disruptive IT has an opportunity for a Linux Systems Administrator / Engineer to support an enterprise ISP environment. The ideal candidate will have strong hands-on Linux administration experience, particularly with Red Hat Enterprise Linux.

The environment is transitioning from Red Hat Enterprise Virtualisation (RHEV) to Red Hat OpenShift Virtualisation and Nutanix AHV, hosting Red Hat virtual machines.

Key responsibilities

• Administer, configure and maintain Linux servers across production and UAT environments.
• Perform daily health checks covering CPU, memory, storage, system logs and critical services.
• Investigate and resolve incidents, service requests and change requests.
• Install system updates and security patches to maintain stability, security and compliance.
• Deploy and manage Red Hat Satellite and Ansible, including playbooks for patching, configuration management and automation.
• Manage user accounts, permissions, authentication and LDAP access controls.
• Administer Zimbra email services.
• Monitor NetBackup jobs, investigate failures and perform restore testing.
• Maintain technical documentation and work with vendors on escalations.
• Participate in standby and after-hours support for critical incidents.

Core skills and experience

• Strong practical experience administering Red Hat Enterprise Linux.
• Proven Linux troubleshooting and incident resolution skills.
• Experience with enterprise virtualisation, particularly RHEV, Red Hat OpenShift Virtualisation and/or Nutanix AHV.
• Experience with Linux patching, security, access management and system monitoring.
• Working knowledge of Ansible automation and Red Hat Satellite.
• Ability to communicate clearly, document solutions and work effectively with technical teams.

Advantageous skills

• Oracle administration skills.
• Windows administration and Microsoft SQL Server skills.
• Exposure to Entuity and AppDynamics.
• Experience with Xymon, Iris, Zimbra and NetBackup.

dditional requirements

• Ability to attend the Centurion office on Mondays, Wednesdays and Fridays.
• Availability to participate in standby and after-hours support when required.

How to apply

• Apply through LinkedIn with your updated CV. Please clearly highlight your Linux administration experience and exposure to Red Hat, OpenShift and Nutanix, and include your notice period or availability.