Systems Administrator

At CAE, our mission is clear: to help make the world a safer place. For nearly 80 years, we've driven innovation in simulation, training, and mission readiness to support critical operations worldwide. By leveraging advanced technologies, we empower our customers to operate smarter, faster, and more sustainably. Join a purpose-driven organisation where bold ideas are encouraged, collaboration drives progress, and your growth fuels our shared success.

At CAE, our mission is clear: to help make the world a safer place. For nearly 80 years, we’ve driven innovation in simulation, training, and mission readiness to support critical operations worldwide. By leveraging advanced technologies, we empower our customers to operate smarter, faster, and more sustainably. Join a purpose-driven organization where bold ideas are encouraged, collaboration drives progress, and your growth fuels our shared success.

Stay informed about recruitment scams. Learn how to identify legitimate CAE communications and avoid fraudulent offers. [Learn more →]

We are seeking an experienced Systems Administrator to support and maintain critical ICT infrastructure within a secure Defence environment. Operating within a mission-critical setting, you'll play a key role in ensuring the availability, performance and security of systems that support training and operational readiness outcomes.

Working closely with ICT, Cyber Security and operational stakeholders, you'll be responsible for maintaining secure and reliable infrastructure, resolving complex technical issues and contributing to the ongoing improvement of critical Defence systems.

As a Systems Administrator, I will:

• Manage and maintain Windows and Linux server environments to ensure reliability, availability and performance.
• Monitor system health, identify issues and troubleshoot complex infrastructure and network problems.
• Administer user accounts, permissions and access controls in line with security requirements.
• Perform patching, system updates and hardening activities to maintain compliance and security standards.
• Support network infrastructure including switches, routers, firewalls and virtualised environments.
• Maintain technical documentation, provide end-user support and contribute to system improvement initiatives.

• Australian Citizenship.
• Current NV2 Defence Security Clearance or ability to maintain an existing clearance.
• Bachelor's degree in Information Technology, Computer Science or a related discipline.
• Minimum 5 years' experience as a Systems Administrator.
• Experience administering Microsoft Windows and Linux operating systems.
• Strong understanding of network infrastructure, including switches, routers and firewalls.
• Experience with system monitoring, troubleshooting and performance optimisation.
• Knowledge of cybersecurity principles, system hardening and patch management practices.
• Experience with backup, recovery and disaster recovery processes.
• Ability to work from our Homebush, NSW office in a secure environment.

• Microsoft Certified Systems Administrator (MCSA) or equivalent Microsoft certifications.
• Cisco Certified Network Associate (CCNA) or similar networking certification.
• Experience with VMware, Hyper-V or other virtualisation technologies.
• Experience operating within Defence, Government or highly regulated environments.
• Familiarity with Defence ICT security frameworks and compliance requirements.
• Experience supporting mission-critical systems and operational environments.

As the Australian Department of Defence is a major client, you must hold and maintain an NV2 Defence Security Clearance to work in this role. Australian Citizenship is a mandatory requirement.

This role is primarily office-based due to the secure nature of the environment and systems being supported.

CAE is committed to providing equal opportunities to all applicants, regardless of race, nationality, color, religion, sex, gender identity or expression, sexual orientation, disability, neurodiversity, veteran status, age, or other characteristics protected by law. We encourage applicants who may not meet every qualification to apply. Reasonable accommodations are available—contact your recruiter or email CAECarrieres-Careers@cae.com if needed.

Privacy Statement | CAE

As part of our process, we may use AI‑supported tools to help review applications, with human decision‑making at every step. CAE thanks all applicants for their interest. However, only those whose background and experience match the requirements of the role will be contacted.