Systems Administrator

Leidos Australia; Canberra; On-site; AUD 110,000 - 140,000; Full time

Benefits offered by this job

Flexibility

Wellbeing

Learning & development

Impactful projects

Career growth

Job summary

Leidos Australia seeks a Systems Administrator to support a strategically important Defence capability across three interconnected TD L and network engineering projects. You will maintain Windows Server, Linux, and VDI environments, ensuring secure, reliable delivery and interoperability with JC2 and JDN environments.

The role requires NV2 security clearance and experience with Active Directory, VMware ESX, Hyper-V, Horizon, and VDI technologies in complex enterprise settings.

Qualifications

• Experience administering Windows Server and Linux environments in enterprise ICT.
• Knowledge of Active Directory, Group Policy, DNS, DHCP, and multi-domain environments.
• Experience maintaining enterprise server, desktop, and infrastructure platforms in medium to large organisations.
• Proficiency with Hyper-V and VMware ESX, including VM provisioning and lifecycle management.
• Experience with Omnissia Horizon, Citrix VAD, or similar VDI technologies.
• Experience with enterprise storage and backup/recovery (NetApp, Veeam).
• Strong analytical and problem-solving skills across infrastructure and end-user computing.
• Excellent written and verbal communication, with Defence stakeholders.
• Understanding of Whole of Australian Government ICT security requirements.

Responsibilities

• Support and administer Windows Server, Linux, virtualization, and VDI environments across multiple Defence projects.
• Maintain Active Directory, VMware ESX, Hyper-V, Horizon, Citrix VAD, storage and backup solutions.
• Collaborate with Defence stakeholders, vendors, and project teams for interoperability and design activities.
• Contribute to security, disaster recovery exercises, and continuous improvement in a highly secure environment.

Skills

Windows Server

Linux

Active Directory

DNS DHCP

Hyper-V

VMware ESX

Citrix Virtual Apps and Desktops

Networking basics

PowerShell scripting

Cyber security fundamentals

Tools

Omnissia Horizon

NetApp storage

Veeam Backup & Replication

Citrix Virtual Apps and Desktops

Job description

About Leidos Australia

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.

Benefits

Leidos is a destination for people who want their work to have purpose, their contribution to be recognised, and their career to grow without needing to fit a single mould. Meaningful work is supported by benefits, flexibility and career pathways that help you grow while balancing life outside work. This includes:

• 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.

About The Team

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.

The Opportunity

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.

About You

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.

Essential

• 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.

Advantageous

• 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.

Pay Range

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.

About Leidos

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

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.

Commitment to Non-Discrimination

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.