Core Services Engineer (Windows Administrator) – TSPV clearance required — Mission Software Solutions — MEL or CBR onsite

• Deliver mission-critical Windows infrastructure supporting a program of national security significance
• Work across enterprise Windows Server, Active Directory, VMware and automation in a complex secure environment
• TSPV clearance required, with the role performed 100% onsite in Melbourne or Canberra

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

You will be joining a high-profile program, with high profile agency working on a program with National Security significance. As a Core Services Engineer, you will be responsible for the operation, performance and continuous improvement of Windows-based enterprise services supporting secure customer environments. Due to the client environment and nature of the work, this position is required to be performed 100% onsite in either Melbourne or Canberra.

In this role, you will:

• Design, administer and support enterprise Windows Server platforms, Active Directory services, Group Policy, DNS, DHCP and supporting management systems across secure environments.
• Build, maintain and optimise virtualised infrastructure hosted on VMware platforms, ensuring availability, resilience, performance and security requirements are achieved.
• Implement automation, standard operating procedures and infrastructure improvements that enhance operational efficiency, platform stability and service quality.
• Collaborate with cyber security specialists, infrastructure engineers, software teams and customer stakeholders to deliver trusted and supportable technology solutions.

About You

We are looking for someone who brings judgement, curiosity and a collaborative approach to work that matters. You are an experienced Windows Infrastructure Engineer who enjoys solving complex technical challenges and maintaining reliable enterprise services in mission-critical environments.

Essential for this role:

• Experience administering and supporting Windows Server environments within medium to large enterprise environments.
• Working knowledge of Active Directory, Group Policy, DNS, DHCP and identity management services.
• Experience supporting VMware vCenter and virtualised server infrastructure, including provisioning, maintenance and lifecycle management.
• Exposure to security hardening, patching, monitoring and operational support activities within enterprise environments.
• Ability to develop and maintain PowerShell scripts, or similar automation solutions, to improve operational efficiency.
• Capability to investigate technical issues, perform root-cause analysis and resolve infrastructure incidents across complex environments.
• Experience producing technical documentation, implementation guides and operational procedures.
• Effective collaboration skills, with the ability to work across technical teams, project stakeholders and service delivery personnel.

This role requires the successful applicant to be an Australian citizen and hold, and maintain, a TSPV clearance.

Applicants may also need to meet International Traffic in Arms Regulations (ITAR) requirements. In certain circumstances this can place limitations on persons who hold dual nationality, permanent residency or are former nationals of certain countries as per ITAR 126.1.

If this role interests you, we encourage you to apply. We value different experiences and are interested in the capability and potential you could bring.

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.

Ready to explore what’s possible?

If this sounds like a role where you can make an impact and continue to grow, we’d like to hear from you. Please apply via the “Apply Now” button with your resume. If you have any questions about the role or recruitment process, please contact Cam Larkin, Talent Acquisition.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

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.