IT Systems AdministratorNV1 Cleared | Microsoft 365 | Linux | Security-Focused Environment
Adelaide
Permanent Opportunity
We're a fast-growing technology organisation looking for an experienced IT Systems Administrator to take ownership of our ICT environment and help drive reliability, security, and continuous improvement across the business.
This hands‐on role is ideal for someone who thrives in a scale‐up environment, enjoys autonomy, and is comfortable making decisions in a agile and evolving setting.
What You'll Do
Administer Microsoft 365, Entra ID, Exchange Online, SharePoint and Teams
Manage Linux (Ubuntu) servers and Proxmox virtualisation
Support networking, VPNs, firewalls, backups and disaster recovery
Administer Mimecast and security access controls
Provide end‐user support and manage hardware lifecycle activities
Support compliance with Essential Eight, DISP, and internal security requirements
Identify opportunities for automation, standardisation and continuous improvement
What You'll Bring
Strong Microsoft 365 administration experience
Linux/Unix administration skills (Ubuntu preferred)




Virtualisation experience (Proxmox, VMware or similar)
Networking and infrastructure support experience
Understanding of cyber security, access management and backup solutions
Strong troubleshooting and problem‐solving skills
Ability to work independently and take ownership
Desirable
Jenkins, Gitea or CI/CD tool experience
Scripting and automation skills
Experience in defence, government or regulated environments
Knowledge of Essential Eight and DISP
Essential Requirement
Current NV1 Security Clearance
If you're a proactive systems administrator who enjoys solving problems, improving systems, and working in a high‐trust environment, we'd love to hear from you.
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.
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