Join a high‑performance team supporting a secure, mission‑critical environment. You’ll help maintain and enhance a classified infrastructure, ensuring it meets strict performance, reliability, and cyber security standards.

What you’ll do

- Maintain and improve classified systems to meet performance, reliability, and security requirements
- Assist with planning, designing, testing, and implementing system upgrades and new platform components
- Apply security patches and maintain accurate cyber security documentation
- Package, deploy, and support applications to ensure compliance with security frameworks
- Support network security technologies including SIEM, vulnerability management, endpoint protection, firewalls, IPS, and device control
- Provide technical advice and resolve user issues across multiple platforms
- Contribute to security accreditation documentation
- Identify opportunities to streamline processes and improve service delivery

What you’ll bring

- Robust Systems Administration or ICT background, including Windows Server 2022 and Windows 11




- Solid understanding of cyber security principles, tools, and best practices
- Knowledge of ISM, NIST, ISO 27001, CIS Controls or similar frameworks
- Excellent analytical and problem‑solving ability
- Strong communication skills and the ability to work with technical and non‑technical stakeholders
- Bonus: Experience with VMware vSphere or Horizon
- Existing NV2 Australian Defence security clearance (mandatory)

To learn more about this opportunity please apply online or reach out to .

Benefits

Please note for all Australian based contract and temporary roles only, the pay rate is inclusive of mandatory 25% casual loading. This excludes permanent and fixed term roles.

EEO Statement

Hudson is committed to helping you find a workplace where you feel respected, supported, and free to thrive. We welcome applications from all backgrounds, identities, and lived experiences—because when different voices come together, amazing things happen.

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📌 Cyber Security Administrator/Systems Engineer (Melbourne)
🏢 UpperGround by Hudson
📍 Melbourne