Linux Systems Administrator

Profectus is seeking experienced Systems Administrators (Linux) to support the delivery and sustainment of secure ICT environments within Defence environments. You will be responsible for the design, configuration, documentation, operation, and support of Red Hat Enterprise Linux (RHEL) systems, working alongside peers of differing specialisation within a wider systems team. It is a hands-on role in a highly secure environment where reliability, security, and performance matter. Key Responsibilities Deploy, support, and maintain RHEL components across physical and virtual infrastructureManage and document the configuration of RHEL systems to defined baselinesManage virtualisation tools such as VMware and configure virtual machines supporting critical applicationsTroubleshoot diverse and complex faults, engaging constructively with peer teams to reach resolutionContribute technical designs and content to knowledge repositories and provide input to policy, process, and proceduresApply ITIL Service Management principles under direction, including participation in Change Advisory Boards (CAB), implementation of approved changes, and use of service management toolsets for tasking and schedulingProvide platform deployment and support to designated activities, which may include planning, out of hours support, and some shift workHandle classified information in accordance with Commonwealth policy, including the Defence Security Principles Framework (DSPF) and the Australian Government Information Security Manual (ISM)Work closely with other technical teams and, where directed, contribute to cross-skill, cross-functional, or project teams Required Experience Red Hat Certified System Administrator (RHCSA) certification, or a tertiary degree or vocational qualification in a closely related discipline5+ years of industry experience in systems administration, relevant military experience, or a combination of the twoProven expertise administering RHEL, including system configuration and support across development and production environmentsSolid understanding of virtualisation technologies such as VMwareDemonstrated ability to communicate effectively with technical peers and frontline IT leadershipAbility to operate effectively both independently and within integrated Commonwealth teams Desirable Experience ITIL certificationKnowledge of storage and backup architecture and managementExperience with VMware, ServiceNow, and CrowdStrike Falcon LogScaleExposure to Windows environments alongside LinuxExperience working within Defence environments or on nationally significant programs Security Clearance Requirements Must be an Australian CitizenMust have a current AGSVA NV1 Security ClearanceNV2 Security Clearance is preferred Working Arrangements OnsiteCanberra, ACTSome travel may be required as part of this engagement Why Profectus Profectus partners with Government and industry organisations to deliver trusted cyber, ICT, and digital capability across complex and highly regulated environments. We take a relationship-driven approach and support our consultants throughout the lifecycle of their engagement.