Linux System Administrator – Defence (JSTE Environment)
Bungendore, NSW
🔐 NV2 Clearance Preferred
Are you a Linux expert with a Defence (ADF) background looking to work on mission-critical platforms that directly support Australia’s operational readiness?
Our client is seeking a Linux System Administrator to support the Joint Collective Training Branch (JCTB) and its Joint Simulation Training Environment (JSTE), a highly secure, complex environment underpinning Defence simulation and training operations.
The Role
You will be responsible for the operation, management, and sustainment of Linux-based infrastructure supporting key Defence networks, including:
* Defence Training and Experimentation Network (DTEN)
* Combined Federated Battle Laboratories Network (CFBLNet)
These platforms are critical to delivering simulation-enabled exercises and experimentation across Defence and coalition environments.
Key Responsibilities
* Administer and support enterprise Linux environments (RHEL, CentOS, Ubuntu or similar)
* Perform system configuration, patching, hardening, and performance tuning
* Manage virtualised environments and underlying infrastructure
* Support high availability and system resilience for mission-critical platforms
* Troubleshoot complex issues across OS, compute, storage, and integrated systems
* Contribute to system builds, automation, and continuous improvement initiatives
* Ensure compliance with Defence security standards and accreditation requirements
* Provide support to live simulation exercises and operational events
What We’re Looking For
* Extensive experience within Defence or Defence-aligned environments (ESSENTIAL)
* Strong hands-on experience with Linux system administration (enterprise environments)
* Experience working in highly secure, classified environments
* Understanding of ITIL-based service management
* Exposure to virtualisation (VMware/KVM) and enterprise storage solutions
* Ability to operate in high-pressure, mission-critical scenarios
Why This Role?
* Work on nationally critical Defence platforms
* Be part of a highly skilled, specialised technical team
* Engage in cutting-edge simulation and training environments
* Long-term, secure program of work in Bungendore
Apply Now If you’re a Defence-experienced Linux Administrator ready to step into a high-impact environment.
We are an inclusive employer committed to fostering a diverse and accessible workplace. We encourage applications from Aboriginal and Torres Strait Islander peoples, people with disabilities, LGBTQIA+ individuals, people of all ages, and those from culturally and linguistically diverse backgrounds.