System Administrator

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profile Job Location:

Sydney - Australia

profile Monthly Salary: Not Disclosed
Posted on: 30+ days ago
Vacancies: 1 Vacancy

Job Summary

Job Description

About the Client:
A global defence and engineering organisation delivering secure scalable ICT infrastructure to support simulation and operational systems. This role supports the Fleet Battle Lab System contributing to mission-critical environments and cyber-resilient platforms.

About the Role:
We are seeking an experienced System Administrator to manage and maintain Windows Server and Red Hat Enterprise Linux systems support virtualisation environments and ensure network stability and security. Youll work across a broad tech stack including Cisco Fortinet VMware and Veeam supporting simulation integration and Defence-grade infrastructure.

Key Responsibilities:

  • Administer Windows Server 2022 and RHEL 8 systems.
  • Manage Active Directory Group Policy DNS DHCP and system hardening.
  • Configure and support Hyper-V and VMware environments.
  • Maintain Veeam Backup & Replication and disaster recovery planning.
  • Monitor and troubleshoot Cisco switches routers and FortiGate firewalls.
  • Automate tasks using PowerShell and Bash scripting.
  • Provide Tier 2/3 support and collaborate with vendors and stakeholders.

Required Experience:

  • Minimum 5 years experience in systems administration.
  • Strong background in Windows and/or Linux (RHEL) environments.
  • Hands-on experience with Cisco networking FortiGate firewalls and virtualisation platforms.
  • Solid understanding of AD DNS DHCP and Group Policy.
  • Exposure to cybersecurity practices and Defence ICT standards.
  • Excellent troubleshooting and communication skills.
  • NV1 Security Clearance (mandatory).
  • Relevant certifications (e.g. Microsoft Red Hat VMware Cisco Fortinet Veeam CompTIA) highly regarded.

Whats on Offer

  • 6-month contract
  • Market rate
  • Sydney CBD location
  • Work on Defence-grade infrastructure and simulation systems

How to Apply:
To express interest please upload your resume. Suitable candidates will be contacted with further instructions.
Contact Dylan Sheoshker at or 0


Required Experience:

Unclear Seniority

Job DescriptionAbout the Client:A global defence and engineering organisation delivering secure scalable ICT infrastructure to support simulation and operational systems. This role supports the Fleet Battle Lab System contributing to mission-critical environments and cyber-resilient platforms.About ...
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Key Skills

  • Active Directory
  • VMware
  • Computer Networking
  • Microsoft Windows Server
  • Solaris
  • Windows
  • Linux
  • SAN
  • Shell Scripting
  • System Administration
  • Dns
  • CentOS

About Company

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Whizdom is a custom provider of Information Technology and administrative contractors to Government and private sector clients.

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