System Administrator

Job Location: Canberra (ACT)

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

We are seeking a highly skilled and proactive System Administrator. This role is ideal for someone who thrives in complex environments and enjoys working across infrastructure, security, networking, and automation.

You will be responsible for maintaining and enhancing a hybrid environment spanning Windows, Linux, virtualisation, networking, and enterprise monitoring platforms, ensuring high availability, security, and performance.

You are a problem-solver with strong attention to detail and the ability to work across multiple domains. You enjoy troubleshooting complex issues and continuously improving systems and processes.

Core Duties:

• Design, manage, and support enterprise infrastructure across Active Directory, identity, and authentication services
• Administer Group Policy, endpoint management, and patching across systems
• Maintain and troubleshoot network infrastructure (Cisco, VLANs, routing, firewalls)
• Monitor, secure, and respond to incidents using Splunk, SIEM, and security best practices
• Design and support virtualisation environments (VMware ESXi/vCenter) including performance and recovery
• Manage physical infrastructure, including hardware, cabling, and power/cooling systems
• Oversee storage and backup solutions (SAN/NAS, RAID, Veeam or equivalent)
• Administer Linux (RHEL) environments, including AD integration and system hardening
• Develop automation and scripts using PowerShell and Bash
• Implement and maintain monitoring and observability platforms, including dashboards and root cause analysis
• Support and administer Atlassian tools (Jira, Confluence, Bitbucket, Bamboo)

About YOU

• Bachelor's degree in Computer Science, Information Technology, or a related discipline (or equivalent practical experience)
• Strong experience across Windows Server, AD, and Group Policy
• Hands-on experience administering enterprise Linux environments, with Red Hat Enterprise Linux expertise considered highly desirable
• Demonstrated experience with Linux system hardening, patching, troubleshooting, and performance tuning
• Solid networking knowledge with Cisco technologies
• Hands-on experience with VMware environments
• Proven experience with Splunk or SIEM platforms
• Exposure to Atlassian ecosystem
• Exposure to hybrid cloud or Azure-hosted Linux workloads is desirable
• Experience working within Defence or highly regulated security environments is advantageous
• Must hold or be eligible to obtain NV2 Defence Security Clearance
• Eligibility to comply with International Traffic in Arms (ITAR) regulations

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.