Systems Administrator

System Administrator

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

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.

We embrace flexible work arrangements at BAE Systems Australia, such as working a 9-day fortnight hybrid working.

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 Systems Administrator, you will play a key role within the Defence Delivery – Hosted Platforms team, supporting the delivery, maintenance, and continuous improvement of critical infrastructure services. In this role, you will gain exposure to a broad range of technologies, including Windows and Linux servers, Citrix environments, hyper-converged infrastructure and data protection solutions.

The Systems Administrator is responsible for the day-to-day operation, support, and maintenance of infrastructure services, ensuring incidents and service requests are resolved effectively and within agreed service levels. The role supports a diverse technology environment, including Windows, Linux and storage platforms, while driving service improvements through automation, process optimisation, and robust documentation. Working collaboratively with cross-functional teams, the Systems Administrator helps deliver secure, reliable, and compliant infrastructure services that meet both business and customer requirements.

Core Duties:

• Administer, maintain, and optimise infrastructure environments to ensure high availability, performance, and reliability.
• Monitor system and application health, proactively identifying, investigating, and resolving incidents, risks, and performance issues.
• Implement security best practices, including system hardening, patch management, upgrades, and vulnerability remediation.
• Develop and maintain automation solutions using scripting and tools such as Ansible, SCCM, and other infrastructure automation platforms.
• Collaborate with internal teams and stakeholders to design and deliver infrastructure solutions that meet business and operational requirements.
• Implement and maintain monitoring and alerting capabilities to ensure the ongoing health, availability, and performance of services.
• Diagnose, troubleshoot, and resolve complex technical issues, conducting root cause analysis to prevent recurrence.
• Develop and maintain technical documentation, including operational procedures, system configurations, and support standards.
• Share knowledge, support team capability development, and contribute to continuous improvement initiatives.
• Participate in infrastructure planning, technology refresh programs, and lifecycle management activities to support business objectives and operational excellence

About YOU

• Bachelor’s degree in computer science, information technology, or related field or equivalent experience.
• Experience in Windows Systems Administration (preferably 3 years or more)
• Experience with performance monitoring, troubleshooting, and user support.
• Proficiency in Automation and scripting languages (e.g. PowerShell)
• Knowledge of configuration management tools (e.g. SCCM)
• 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.
• Expertise in Linux distributions (e.g. Oracle Linux, RHEL and RedHat Satellite) along with Citrix environments would be an advantage
• 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.