System Administrator

Job Location: South Australia (Edinburgh Parks or Flinders Street)

We work in a thriving sector – one that puts us at the forefront of exciting and meaningful work. Every day we push boundaries to produce some of the world’s most innovative and ground breaking technology. Individually we all contribute to our success. Collectively we make the impossible possible.

Recognised for delivering projects of global and national significance that help keep Australia safe, it is our shared passion that shapes our culture, and our people that make it a great place to work.

Who we are:

Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You’ll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow – shaping a safer future, for all of us.

From the depths of the ocean, to the far reaches of space – there’s no limit to where a career at BAE Systems could take you.

Role Description

As a Senior Systems Administrator within the End User Services division of Enterprise Services, you will serve as a key Subject Matter Expert (SME) for all technologies that support our users and their endpoints. You’ll take ownership of the support, sustainment, and delivery of core services across Windows Operating Systems (including selected servers), Microsoft Configuration Manager, Active Directory, Group Policy, Microsoft Intune, Microsoft 365, and related platforms.

You’ll play a critical role in resolving complex issues, driving service improvements, and ensuring a seamless end user experience. Working within ITIL frameworks, you’ll lead escalations, perform root cause analysis, and provide expert guidance to both technical peers and business stakeholders.

This role also partners closely with Systems Architects, Infrastructure Operations Leaders, and Cyber Security teams to influence design decisions and uplift the maturity of end user computing services. As a senior member of the team, you will mentor junior staff and contribute to a culture of technical excellence.

Core Duties:

• Service Design & Implementation: Provide SME input into architecture and design for Windows, mobility, and virtualised platforms. Configure and implement services, servers, and supporting systems aligned to organisational needs.
• Windows System Administration: Install, configure, and maintain Windows endpoints. Monitor performance, troubleshoot complex issues, and ensure a high quality end user experience.
• Security & Compliance: Apply security best practices, manage updates, patches, and upgrades, and ensure systems remain compliant with organisational and regulatory requirements.
• Endpoint Hardware & Peripheral Management: Own the approved hardware catalogue for Windows endpoints, mobility devices, and peripherals. Maintain lifecycle roadmaps and oversee model transitions.
• Scripting & Automation: Develop and maintain automation solutions (e.g., MECM task sequences, PowerShell scripts) to streamline operations and reduce manual effort.
• Software & Configuration Management: Oversee software deployment, configuration baselines, and update management using MECM and Intune. Ensure endpoints remain compliant and optimised.
• Collaboration & Mentorship: Work closely with cross functional teams to deliver business outcomes and provide guidance and mentorship to junior team members.
• Advanced Troubleshooting & Support: Lead incident diagnosis, resolution, and root cause analysis for complex technical issues

About YOU

• Bachelor’s degree in computer science, information technology, or related field (or equivalent experience).
• Demonstrated experience in end user computing, including endpoint management, virtual desktops, MDM, and SCCM/MECM.
• Strong understanding of Windows operating systems and associated technologies.
• Expertise in endpoint configuration and management using modern MDM platforms.
• Proficiency in scripting languages such as PowerShell, Bash, or Python.
• Experience working in hybrid cloud environments, ideally Azure.
• Excellent analytical and problem solving skills, with the ability to resolve complex technical challenges.
• Strong communication and interpersonal skills, with the ability to collaborate effectively across diverse teams.
• Familiarity with configuration management tools such as SCCM, Intune, or WS1.
• Ability to obtain and maintain an NV2 security clearance.

Why BAE Systems?

Here you’ll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work – this is a place where you can grow your career with confidence and be empowered to be your best. You’ll be recognised for your contribution and enjoy rewards tailored to what’s most important to you and your family – support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a strong sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.

A place where everyone can thrive

We’re committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.

We support our veteran community through VetNet Australia, along with initiatives such as Reserve Service Leave, a Veteran Mentoring Program, and partner-supported programs.

We welcome applications from all candidates and strongly encourage Aboriginal and Torres Strait Islander peoples to apply.

We are proud to be recognised as an employer of choice for women by WORK180 and recipients of the Benchmarcx Top Employer for Candidate Experience Excellence 2026. As members of the Circle Back Initiative, we commit to responding to every applicant.

If you require any reasonable adjustments during the recruitment process, please contact our recruitment team to discuss the support you may need. You can also connect with us via Careers and Employment.

Security statement

Please note, as a defence security clearance is required for this role, applicants must be Australian citizens and either possess or be eligible to obtain and maintain one. Further information regarding security clearances.