Systems Administrator
Leidos Australia
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Descripción de la vacante
Leidos Australia is seeking a Systems Administrator to support Defence capabilities across three interconnected TDl and network engineering projects. You will administer Windows Server, Linux, virtualization, and VDI, maintaining AD, DNS, DHCP, and storage solutions while collaborating with Defence partners to ensure interoperability and secure operations.
You will contribute to disaster recovery, cyber security compliance, and ongoing technology refresh in a high‑security, Whole‑of‑Government
Formación
- Experience with Windows Server and Linux in complex enterprise environments.
- Knowledge of Active Directory, DNS, DHCP, and multi‑domain environments.
- Experience supporting Hyper‑V and VMware ESX environments.
- Experience with Omnissia Horizon, Citrix VAD, or similar VDI tech.
- Experience with enterprise storage, backup, and recovery (NetApp, Veeam).
- Strong analytical and problem‑solving skills; effective communication with stakeholders.
Responsabilidades
- Support and administer Windows Server, Linux, virtualization, and VDI across multiple Defence projects.
- Maintain and enhance infrastructure technologies including AD, VMware ESX, Hyper‑V, Citrix VAD, and storage solutions.
- Collaborate with Defence stakeholders, vendors and project teams to support interoperability and network design.
- Contribute to disaster recovery, cyber security compliance, and secure operations in a government ICT environment.
Conocimientos
Herramientas
Descripción del empleo
At Leidos Australia, our work goes beyond a job title. We design, build, operate and support the systems, services and capabilities that help protect and advance the Australian way of life.
Backed by a global organisation of more than 40,000 people, our Australian team of around 2,000 has partnered with government, defence and national security customers for more than 30 years. We deliver mission‑critical solutions where reliability, trust and purpose matter.
- Flex Your Way – Tailor work to your life with options including Life Days (up to 12 extra days off per year), part‑time arrangements, job sharing, and compressed hours.
- Wellbeing That Matters – Free access to Headspace and MeQuilibrium, plus dedicated wellness spaces to support your mental, physical, and emotional wellbeing.
- Learn Without Limits – Access over 120,000 on‑demand courses, alongside technical, project management, leadership, and professional development opportunities.
- Work That Makes an Impact – Contribute to nationally significant projects that matter, solve complex challenges, and accelerate your career through unique growth opportunities.
- Build Your Future – Whether you're deepening technical expertise or preparing for leadership, we'll invest in your development every step of the way.
- And Much More – These are just a few of the ways we invest in our people and help them thrive.
You’ll join a team where people work with integrity, inclusion, innovation, agility, collaboration and commitment. In practice, that means sharing ownership, solving complex problems together and staying connected to the customer context, the purpose behind the work and how each role contributes to meaningful outcomes.
We deliver prime systems integration projects which build, develop and support military solutions for Defence. The team focuses on leveraging our local engineering, our services expertise, and global products to bring new capabilities to the Australian Defence Force.
As a Systems Administrator, you will play a key role in supporting a strategically important Defence capability that delivers technical staffing and specialist expertise across three interconnected Tactical Data Link (TDL) and network engineering projects. Supporting Joint Command and Control (JC2) and Joint Data Network (JDN) environments, you will contribute to the delivery of critical testing, interoperability, accreditation, and network design activities that enable Defence operational effectiveness.
- Support and administer enterprise Windows Server, Linux, virtualisation, and VDI environments that underpin Tactical Data Link, platform, and software testing activities across a multi‑project Defence program.
- Maintain and enhance critical infrastructure technologies including Active Directory, VMware ESX, Hyper‑V, Omnissia Horizon, Citrix Virtual Apps and Desktops, storage, backup, and recovery solutions to ensure secure, reliable, and resilient service delivery.
- Collaborate with Defence stakeholders, technical specialists, vendors, and project teams to support TDL interoperability requirements, Joint Data Network capabilities, Link 16 network design activities, and ongoing technology refresh and continuous improvement initiatives.
- Contribute to infrastructure projects, disaster recovery exercises, cyber security compliance activities, and operational support functions while working within a highly secure environment aligned to Whole of Australian Government ICT security requirements and Defence accreditation frameworks.
We are looking for a technology professional who enjoys working in secure and complex ICT environments where reliability, collaboration, and technical expertise directly contribute to Defence capability outcomes. You will bring a customer‑focused approach, sound systems administration experience, and the ability to work across a diverse technology landscape supporting mission‑critical networks and services.
- Experience supporting and administering Microsoft Windows Server and Linux environments within complex enterprise ICT environments.
- Knowledge of Active Directory, Group Policy, DNS, DHCP, and multi‑domain environments, including administration, maintenance, and troubleshooting.
- Experience maintaining and supporting enterprise server, desktop, and infrastructure platforms within medium to large organisations.
- Capability in administering and supporting Microsoft Hyper‑V and VMware ESX environments, including virtual machine provisioning, lifecycle management, and troubleshooting.
- Experience supporting Omnissia Horizon, Citrix Virtual Apps and Desktops, or similar virtual desktop infrastructure technologies.
- Experience with enterprise storage, backup, and recovery solutions, ideally including NetApp storage and Veeam Backup & Replication.
- Demonstrated analytical and problem‑solving capability, with the ability to diagnose and resolve complex technical issues across infrastructure, virtualisation, and end‑user computing environments.
- Well‑developed written and verbal communication skills, with the ability to engage effectively with customers, technical teams, and Defence stakeholders.
- Understanding of Whole of Australian Government ICT security requirements, ACSC Information Security Manual (ISM) controls, cyber assurance frameworks, and secure operating environments.
- Ability to work independently while contributing effectively within a multidisciplinary team supporting multiple projects and competing priorities.
- Experience with containerisation technologies, including Docker and container management platforms.
- Capability in PowerShell scripting and automation to improve operational efficiency and reduce manual administration activities.
- Knowledge of thin client technologies and virtual desktop environments.
- Familiarity with Microsoft Endpoint Configuration Manager (MECM/SCCM) or related endpoint management solutions.
- Understanding of networking concepts including TCP/IP, VLANs, VPNs, routing, switching, firewall technologies, and secure network operations.
- Exposure to Tactical Data Link, Defence networking, interoperability testing, systems integration, or secure communications environments.
- ITIL Foundation certification or a comparable IT Service Management qualification.
- Microsoft certifications such as Windows Server Hybrid Administrator Associate, Azure Administrator Associate, or equivalent.
- Citrix Certified Associate (CCA) certification or a higher‑level Citrix accreditation.
This position requires a minimum NV2 Security Clearance.
Our hiring process is designed to be straightforward, respectful and easy to navigate. If your skills, experience and qualifications look aligned with the role, our Talent Acquisition team will contact you to discuss the next stage. You can expect:
- An initial conversation with our Talent Acquisition team
- An interview with the hiring manager or interview panel
- Any role‑specific assessment, technical discussion or customer step required for the position
We’ll let you know what to expect before each stage, including who you’ll meet and how to prepare. If you need any adjustments or support during the process, please let us know.
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment‑related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment‑related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
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