System Engineer - Unix | 6-month Fixed Term Contract

About Leidos Australia At Leidos Australia, our work goes beyond a job title. We design, build, operate and support the systems, services and capabilities that help protect and advance the Australian way of life. Backed by a global organisation of more than 40,000 people, our Australian team of around 2,000 has partnered with government, defence and national security customers for more than 30 years. We deliver mission-critical solutions where reliability, trust and purpose matter. Leidos is a destination for people who want their work to have purpose, their contribution to be recognised, and their career to grow without needing to fit a single mould. Meaningful work is supported by benefits, flexibility and career pathways that help you grow while balancing life outside work. This includes: Flex Your Way   – Tailor work to your life with options including Life Days (up to 12 extra days off per year), part-time arrangements, job sharing, and compressed hours. Wellbeing That Matters   – Free access to Headspace and MeQuilibrium, plus dedicated wellness spaces to support your mental, physical, and emotional wellbeing. Learn Without Limits   – Access over 120,000 on-demand courses, alongside technical, project management, leadership, and professional development opportunities. Work That Makes an Impact   – Contribute to nationally significant projects that matter, solve complex challenges, and accelerate your career through unique growth opportunities. Build Your Future   – Whether you're deepening technical expertise or preparing for leadership, we'll invest in your development every step of the way. And Much More   – These are just a few of the ways we invest in our people and help them thrive.

You’ll join a team where people work with integrity, inclusion, innovation, agility, collaboration and commitment. In practice, that means sharing ownership, solving complex problems together and staying connected to the customer context, the purpose behind the work and how each role contributes to meaningful outcomes.

This is an opportunity to contribute to the delivery of critical Unix/Linux infrastructure projects that support the performance, resilience and modernisation of enterprise technology environments. As a Systems Engineer – Unix, you will play a key role in designing and implementing infrastructure solutions that enable business and technology transformation initiatives. Design, build, configure, test and transition Unix/Linux infrastructure solutions across on-premises, hybrid and cloud environments, ensuring alignment with architecture, security and operational requirements. Support major infrastructure projects including platform upgrades, migrations, modernisation programs, application and database transitions, and cloud adoption initiatives across enterprise environments. Partner with architects, project managers, application, database, network, storage, cybersecurity and operational teams to deliver secure, resilient and supportable infrastructure solutions from design through to production handover. Drive automation and continuous improvement through scripting, Infrastructure as Code and modern engineering practices, helping to improve deployment consistency, operational efficiency and long-term platform reliability.

We're looking for an experienced infrastructure engineer who enjoys solving complex technical challenges, delivering quality project outcomes and collaborating with a diverse range of stakeholders. You bring a practical approach to engineering, a focus on operational excellence, and the ability to translate technical requirements into reliable and scalable infrastructure solutions. Essential: Experience as a Unix/Linux Systems Engineer or Infrastructure Engineer supporting enterprise-scale environments. Knowledge of enterprise Unix/Linux platforms such as IBM AIX, Red Hat Enterprise Linux, SUSE Linux, Solaris, HP-UX or equivalent, including