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.

Description

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

- 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.

The Mission Software Solutions business delivers customised and off‑the‑shelf software solutions to Defence, Intelligence and other Government sectors. The business also builds capabilities that can be used for a wide range of applications in both traditional and non‑traditional environments; providing leadership in the advancement of technological modernisation of complex enterprises within Government.

The Opportunity

As a Windows Administrator within our AGO GEO SPACES program,



you’ll play a key role in supporting advanced national security capabilities through the delivery and maintenance of secure, high‑availability infrastructure. Working alongside a team of specialist technical professionals, you’ll help ensure critical systems remain reliable, secure and operational in a highly regulated environment.

- Provide Level 2 and Level 3 support for complex Microsoft Windows infrastructure, resolving incidents and maintaining the performance and availability of mission‑critical systems.
- Administer and optimise Windows Server environments, Active Directory, Group Policy, and VMware platforms to support secure and reliable service delivery.
- Manage the development, packaging, deployment and lifecycle management of applications and Standard Operating Environments (SOE) using MECM.
- Support and maintain physical and virtual infrastructure, including HP OneView and GreenLake platforms, while working within established security frameworks and compliance requirements.

About You

You are an experienced infrastructure professional who enjoys working in secure, complex technical environments and takes pride in delivering reliable outcomes. You bring a collaborative approach, a commitment to operational excellence, and the ability to troubleshoot and resolve technical challenges in support of critical business functions.

Essential Skills And Experience

- Experience administering Microsoft Windows Server environments, including Server 2016, 2019 and 2022.
- Capability in Active Directory, Group Policy administration, and identity and access management practices.
- Experience with MECM application packaging, deployment and SOE lifecycle management.
- Knowledge of VMware virtual infrastructure administration and support.
- Demonstrated experience providing Level 2 and Level 3 incident response and troubleshooting within enterprise environments.




- Ability to work effectively within structured security and compliance frameworks.

Advantageous Skills And Experience

- Experience supporting HP OneView and GreenLake infrastructure platforms.
- Exposure to highly regulated, government, defence or national security environments.
- Familiarity with infrastructure hardening, system security controls and operational support within classified environments.

Due to the nature of this role, you must be an Australian Citizen holding an active TSPV security clearance, with the ability to be successful for a DISA/OSA.

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 productive 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

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

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 law.

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📌 Windows Administrator (Melbourne)
🏢 Leidos Australia
📍 Melbourne