Windows Administrator

00160 Leidos Australia Pty Ltd.; Melbourne; On-site; AUD 100,000 - 140,000; Full time

Benefits offered by this job

Life Days

Headspace access

MeQuilibrium access

On-demand courses

Wellbeing spaces

Career development

Job summary

Leidos Australia is seeking an experienced Windows Administrator to support and secure our national security‑focused infrastructure. You will handle Level 2/3 incidents, administer Windows Server, Active Directory, Group Policy, and VMware, and manage applications using MECM within strict compliance requirements.

You will work in a highly regulated environment, collaborating with security teams to ensure reliable, available services and ongoing professional development in a mission‑critical

Qualifications

• Experience administering Microsoft Windows Server environments (2016/2019/2022).
• Strong knowledge of Active Directory, Group Policy, and IAM practices.
• Experience with MECM packaging, deployment, and SOE lifecycle management.
• Knowledge of VMware virtual infrastructure administration and support.
• Experience providing Level 2/3 incident response in enterprise environments.
• Ability to work within structured security and compliance frameworks.

Responsibilities

• Provide Level 2 and Level 3 support for Windows infrastructure, ensuring incident resolution and high availability.
• Administer and optimise Windows Server environments, Active Directory, Group Policy, and VMware platforms.
• Manage development, packaging, deployment and lifecycle of applications and SOE using MECM.
• Support and maintain physical and virtual infrastructure including HP OneView and GreenLake within security frameworks.

Skills

Windows Server

Active Directory

Group Policy

MECM

VMware

Incident response

Security & compliance

Tools

MECM

VMware

HP OneView

GreenLake

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.

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.

The Mission Software Solutions business delivers customized 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.

What to Expect When You Apply

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.

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.