(Urgent) Infrastructure Systems Administrator

2 days ago

Council of the City of Sydney, Australia Talent International Full time

Infrastructure Systems Administrator – Defence & Maritime

Location: Central Sydney
Clearance: NV1 (Australian Citizens only)
Salary: $160,000 – $190,000 depending on experience

Our client, a leading defence partner in the maritime domain, is seeking a skilled Infrastructure Systems Administrator to join their team. This role is pivotal in ensuring the stability, security, and scalability of critical defence simulation and fleet battle systems.

If you’re an experienced systems administrator with a passion for defence technology and the capability to operate in a highly secure environment, this is an opportunity to play a direct role in supporting Australia’s naval operations.

Key Responsibilities

- Administer and maintain Windows Server 2022 and Red Hat Enterprise Linux 8 systems
- Manage Active Directory, Group Policy, DNS, DHCP, and implement system hardening
- Configure and optimise Hyper-V and VMware environments
- Configure, monitor, and troubleshoot Cisco switches/routers and FortiGate firewalls
- Support and secure LAN, WAN, and VPN infrastructure
- Integrate and support simulation systems using advanced simulation architectures
- Ensure systems remain compliant with evolving Defence cyber standards
- Monitor performance, apply patches, and automate tasks with PowerShell and Bash
- Provide Tier 2/3 support and manage incident troubleshooting and resolution
- Maintain up-to-date documentation of ICT systems and services
- Collaborate with vendors and Defence stakeholders under structured change management

Required Qualifications & Certifications

- Certificate IV, Diploma, or higher in IT; or equivalent industry certifications such as:
- Microsoft Certified: Windows Server Administrator
- VMware Certified Professional (VCP)
- Fortinet NSE 4+
- CompTIA Security+ or Network+
- Minimum 5 years’ systems administration experience in medium-to-large IT environments
- Strong expertise in Windows and/or Linux (RHEL) administration
- Proven experience with Cisco networking and FortiGate firewalls
- In-depth knowledge of AD, DNS, DHCP, and Group Policy
- Hands-on experience with Hyper-V, VMware, and Veeam Backup & Replication
- Solid grasp of networking protocols (TCP/IP, VLANs, routing, VPNs, multicast)
- Strong troubleshooting and problem-solving ability
- Knowledge of cyber security practices and security awareness
- Excellent communication and collaboration skills

Highly Desirable

- Exposure to defence/military IT environments, especially maritime or naval
- Experience with simulation standards (DIS/HLA)
- Familiarity with Naval Combat Management Systems (2+ years)
- Understanding of Navy operations, doctrine, and warfighting principles
- Knowledge of C4I systems (e.g., Link16, GCCS)
- Proficiency in automation scripting (PowerShell, Bash)

Hours: 40 per week; flexibility required to align with US time zones during exercises (may include overnight work)

Clearance: Must currently hold or be eligible to hold an NV1 Defence clearance

Eligibility: Australian Citizens with current security clearance

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