Systems Admin (Linux)

Profectus; Canberra; On-site; AUD 110,000 - 140,000; Full time

Job summary

Profectus in Canberra, ACT, seeks experienced Systems Administrators (Linux) to design, deploy, and support secure RHEL environments within Defence contexts. This hands-on role demands reliability, security, and performance in a highly secure setting, with cross-functional collaboration across a diverse systems team.

You will manage RHEL configurations, virtualization via VMware, and maintain documentation, while adhering to DSPF/ISM standards and ITIL practices.

Qualifications

• RHCSA certification or related degree/qualification.
• 5+ years in systems administration, with RHEL in dev/prod.
• VMware virtualization experience and cross-team collaboration.

Responsibilities

• Deploy, support, and maintain RHEL components across physical/virtual infrastructure.
• Manage and document configuration of RHEL systems to baselines.
• Manage virtualization with VMware and configure VMs supporting critical apps.
• Troubleshoot faults and engage peer teams to resolve issues.
• Contribute designs to knowledge repositories and policies.
• Apply ITIL service management and CAB participation.
• Provide deployment support for designated activities, including shifts.
• Handle classified information per DSPF/ISM.
• Collaborate with other technical teams and cross-skill as needed.

Skills

Communication

Independence

Education

RHCSA certification

Bachelor's degree / related qualification

Tools

VMware

RHEL

Job description

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 infrastructure
• Manage and document the configuration of RHEL systems to defined baselines
• Manage virtualisation tools such as VMware and configure virtual machines supporting critical applications
• Troubleshoot diverse and complex faults, engaging constructively with peer teams to reach resolution
• Contribute technical designs and content to knowledge repositories and provide input to policy, process, and procedures
• Apply 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 scheduling
• Provide platform deployment and support to designated activities, which may include planning, out of hours support, and some shift work
• Handle 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 discipline
• 5+ years of industry experience in systems administration, relevant military experience, or a combination of the two
• Proven expertise administering RHEL, including system configuration and support across development and production environments
• Solid understanding of virtualisation technologies such as VMware
• Demonstrated ability to communicate effectively with technical peers and frontline IT leadership
• Ability to operate effectively both independently and within integrated Commonwealth teams

Desirable Experience

• ITIL certification
• Knowledge of storage and backup architecture and management
• Experience with VMware, ServiceNow, and CrowdStrike Falcon LogScale
• Exposure to Windows environments alongside Linux
• Experience working within Defence environments or on nationally significant programs

Security Clearance Requirements

• Must be an Australian Citizen
• Must have a current AGSVA NV1 Security Clearance
• NV2 Security Clearance is preferred

Working Arrangements

• Onsite
• Canberra, ACT
• Some 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.