Linux Systems Engineer Job Location: The role is onsite based in either Adelaide or Melbourne working on the Defence owned JORN classified network managed by BAE Systems Australia. Relocation assistance is offered to interstate candidates willing to relocate to Adelaide. This position offers a 9 day fortnight flexible working option. 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 building something extraordinary in the High Frequency (HF) technology space and are looking for Linux Systems Engineers to join us on this journey and to work on the world leading Jindalee Over the Horizon Radar Network. This is your chance to be part of a pioneering project that pushes the boundaries of communications technology. * Work on cutting-edge HF technology projects with real-world impact. * Be part of a collaborative, innovative team where your ideas matter. * Access opportunities for career growth and professional development. You will be working with exciting technologies like Red Hat Enterprise Linux, Satellite, Ansible, OpenShift, Kubernetes to develop new capabilities and to administer and maintain the existing JORN network. Core Duties: * Use Red Hat Satellite and Ansible to manage, design and deploy Linux changes into the JORN network * Develop and implement engineering changes within a defined scope of work, including analysis of requirements, design, reviews, implementation, testing and signoff in accordance with the ICT Engineering Development Plan and other applicable plans and processes * Creating and updating engineering documentation including designs, drawings, manuals and associated artefacts * Demonstrate a high level of technical proficiency * Working within a team, undertake engineering activities within own competence without day-to-day guidance or supervision, including liaison with customers and stakeholders as appropriate * Make engineering decisions within own sphere of responsibility and delegated authority * Foster a culture of openness, responsibility and consistent correctness and completeness * Work within agreed project technical, cost and schedule constraints * Seek and share good practice and knowledge to continuously improve own practices. Be aware of and contribute to relevant BAE Systems Australia engineering communities of interest * Occasional out of hours work will be required and the possibility of travel periodically to remote sites for periods of up to two weeks and on occasions longer Essential Skills: * Extensive background with Red Hat Enterprise Linux and a good understanding of engineering practices and methods is considered essential, ideally within defence industry * Demonstrated experience in the design, implementation and administration of Linux operating systems and environments * Demonstrated comprehensive experience in Red Hat Enterprise Linux, Red Hat Satellite and Ansible * Experience in Red Hat OpenShift, Containerisation, Kubernetes are an advantage * RHCE or RHCSA certifications are an advantage * Familiarity with Agile / Scrum methodology * Able to balance conflicting priorities to deliver against customer and business requirements, with appropriate stakeholder management * Good communication skills with the ability to effectively communicate with all stakeholders within the project * Proven ability to function confidently within a project team environment * Demonstrated problem solving, systems analysis, critical thinking and problem solving skills * Defence security clearance or eligibility to obtain NV2 security clearance * Eligibility to be cleared for International Traffic In Arms (ITAR) regulations The Team The High Frequency Sensing team is part of the BAE Systems Defence Delivery Business Unit and delivers advanced Over The Horizon Radar (OTHR) capability across the full lifecycle, spanning acquisition, sustainment and research and development– with all design wholly undertaken within Australia. It brings together expertise in large and medium scale wide area surveillance systems to support sovereign capability and operational readiness for Australian and international export customers. It is an exciting time to join the team with major upgrades occurring for Australian and US customer systems, evolving sustainment focus to ensure capability readiness for the Australian Defence Force customer, and mobilisation of a major export acquisition program to Canada, as well as future growth opportunities constantly on the go. We are structured as two product portfolios, proudly providing exciting opportunities to our people and critical capabilities to our Australian and international customers. Jindalee Operational Radar Network (JORN) and Arctic Over The Horizon Radar The Jindalee Operational Radar Network (JORN) is a connected series of three remote over-the-horizon radars (OTHR) located in Queensland, the Northern Territory and Western Australia. The state-of-the-art defence radar system provides wide-area surveillance at ranges of 1,000 to 3,000 kilometres and plays a vital role in supporting the Australian Defence Force's (ADF) air and maritime operations, border protection, disaster relief, and rescue operations. As the Australian Government's Over The Horizon Radar (OTHR) industry partner for JORN, BAE Systems is looking to mobilise an exceptional team to support a ground-breaking Defence export opportunity for the nation. This is your chance to join a growing team delivering world-leading capability to the Australian and Canadian Governments. 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