Linux Administrator

JVR Software; Centurion; On-site; ZAR 284,000 - 405,000; Full time

Job summary

JVR Software in Tshwane (Centurion) is seeking an experienced Linux systems administrator to join our IT operations team. You will install, configure and maintain enterprise Linux servers, ensure high availability and perform regular patching and security remediation.

The role covers virtualization, automation with Ansible and Red Hat Satellite, monitoring, backups and incident management. On-site work is required three days a week, with standby support as needed and collaboration with security

Qualifications

• Extensive hands-on Linux system administration and troubleshooting.
• Red Hat Enterprise Linux (RHEL) expertise.
• Experience with Linux virtualization environments.
• Ansible automation and configuration management.
• Red Hat Satellite administration.
• LDAP authentication and user access management.

Responsibilities

• Install, configure, administer and maintain enterprise Linux servers.
• Conduct daily infrastructure health checks, including CPU, memory, disk usage, inode utilisation and system services.
• Review system logs, identify failures and proactively address potential outages.
• Ensure high availability, system reliability and optimal infrastructure performance.
• Perform regular system updates, patching and security remediation.
• Support Linux VMs hosted on Red Hat and Nutanix platforms; assist with migrations.
• Troubleshoot virtualization-related incidents and infrastructure issues.
• Install and configure Red Hat Satellite and Ansible; develop and maintain Ansible playbooks.
• Automate patching, configuration management and routine administrative tasks.
• Deploy and support monitoring agents (Xymon, IRIS).
• Investigate and resolve incidents, service requests and change requests; escalate as needed.
• Manage Linux user accounts, LDAP permissions and password policies.
• Monitor backups and perform restore testing.
• Maintain technical documentation and runbooks; engage with vendors.

Skills

Linux system administration

RHEL

Linux virtualization

LDAP authentication

Monitoring & backups

Incident management

Tools

Red Hat Satellite

Ansible

Xymon

IRIS

Nutanix AHV

OpenShift Virtualisation

Job description

Location Tshwane Job type IT / Computing / Software Salary 250 Hourly Posted 29 Oct 2026

Location Tshwane Job type IT / Computing / Software Salary 250 Hourly Posted 29 Oct 2026

Key Responsibilities Linux System Administration & Infrastructure Install, configure, administer and maintain enterprise Linux servers. Conduct daily infrastructure health checks, including CPU, memory, disk usage, inode utilisation and system services. Review system logs, identify failures and proactively address potential outages. Ensure high availability, system reliability and optimal infrastructure performance. Perform regular system updates, patching and security remediation. Virtualisation & Platform Support Support Linux virtual machines hosted on Red Hat and Nutanix platforms. Assist with migration activities involving RHEV, Red Hat OpenShift Virtualisation and Nutanix AHV. Troubleshoot virtualisation-related incidents and infrastructure issues. Automation & Configuration Management Install and configure Red Hat Satellite and Ansible. Develop, maintain and update Ansible playbooks. Automate patching, configuration management and routine administrative tasks. Deploy and support infrastructure monitoring agents, including Xymon and IRIS. Incident Management & Technical Support Investigate and resolve incidents, service requests and change requests. Troubleshoot Linux operating system, infrastructure and application-related problems. Escalate complex technical issues to senior support teams or vendors. Administer and support Zimbra email services. Participate in standby and after-hours support for critical P1/P2 incidents. Security, Access & Backups Manage Linux user accounts, LDAP authentication, permissions and password policies. Maintain secure access controls in line with security requirements. Monitor NetBackup jobs, resolve backup failures and perform restore testing. Documentation & Vendor Engagement Maintain technical documentation, system configurations and operational runbooks. Participate in vendor technical engagements and infrastructure improvement initiatives.

Required Technical Skills Strong hands-on Linux system administration and troubleshooting. Red Hat Enterprise Linux (RHEL). Linux virtualisation environments. Ansible automation and configuration management. Red Hat Satellite administration. Linux installation, maintenance, patching and security. LDAP authentication and user access management. Enterprise monitoring, backup and incident management. Production infrastructure support.

Advantageous Experience Red Hat OpenShift Virtualisation / OpenShift Kubernetes Engine (OKE). Nutanix AOS / Nutanix AHV. Oracle administration or related Oracle technical skills. Zimbra email server administration. Veritas NetBackup. Entuity and AppDynamics monitoring. Xymon and IRIS monitoring tools.

Additional Requirements Ability to work on-site in Centurion every Monday, Wednesday and Friday . Availability for standby or on-call support when required. Strong troubleshooting, communication and problem-solving abilities.