Senior Systems Administrator

SENIOR SYSTEMS ADMINISTRATOR

Job Location: SA – Adelaide & VIC – Melbourne – We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this role.

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, the successful candidate will be a key technical SME within Infrastructure Operations – Enterprise Services. This position involves working through team rotations, focusing on providing support, sustainment, and delivery of core infrastructure systems. The primary focus will be on on-premises Red Hat systems, but there will also be exciting opportunities to work on our new Azure Platform as we continue our journey towards a Hybrid Cloud model. For those with a strong interest in administrating and securing RedHat Operating Systems, this role promises plenty of scope for growth and technical challenge.

Core Duties:

• Providing service call support to internal customers meeting agreed resolution times
• Working with the Systems Administration Manager to ensure sustainment activities are planned and executed with a focus on RedHat and Oracle Linux Systems.
• Ensure Standard Operating Processes (SOP’s) are in place and maintained for our Services
• Seek to maximize our efficiency in support of the business by making use of automation technologies including Ansible Automation Platform
• Take a leading technical role in the delivery of Infrastructure Operations Services including the deployment of new operating systems and server platforms in a hybrid cloud environment
• Providing technical leadership and mentorship to junior colleagues
• Ensuring security best practices and processes are followed in support, sustainment and delivery operations

About You

• Extensive experience in the Red Hat Administration space is considered highly desirable
• Experience with Defence Security frameworks is considered advantageous
• Experience working with Ansible and/ or Satellite experience is considered desirable
• Defence security clearance or eligibility to obtain NV 2 Clearance
• Eligibility to be cleared for International Traffic In Arms (ITAR) regulations

The DDC Team

Digital, Data and Cyber (DDC) is the trusted information technology partner to the Enterprise. Our mission is to deliver reliable, adaptable and innovative solutions that enable enterprise outcomes and deliver growth.

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. International Traffic in Arms Regulations (ITAR) are applicable and as such, your nationality may be a factor in determining your suitability for this role. Please visit this webpage for more information