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.

Benefits & Perks

- 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.

About the Team





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. The Civil Digital Modernisation business delivers IT services to Australian Federal and State Government departments and agencies to accelerate digital modernisation and ensure secure, resilient and adaptive environments that meet evolving regulatory, compliance and business needs. Our approach integrates advancing data, AI, cloud and automation delivering agility, security, efficiency and innovation at scale.

The Chance

As a Senior Unix Engineer, you’ll play a key role in supporting and evolving the enterprise Unix and Linux platforms that underpin critical business and customer services. Working as part of a highly skilled infrastructure team, you’ll provide technical leadership across operational support, automation, security, resilience and platform modernisation initiatives. Lead the administration, optimisation and continuous improvement of enterprise Unix/Linux environments, ensuring they remain secure, reliable and available to support critical business operations. Drive infrastructure automation and operational efficiency through tools such as Shell scripting, Python, Ansible,



Terraform and configuration management practices across on‑premises, cloud and hybrid environments. Partner with application, database, middleware, network, security and architecture teams to resolve complex technical challenges, improve platform performance and support technology refresh, migration and cloud adoption initiatives. Contribute to a culture of operational excellence by enhancing system resilience, supporting disaster recovery and high‑availability solutions, mentoring other engineers and helping shape infrastructure standards, roadmaps and best practices.

About You

You are an experienced Unix/Linux infrastructure professional who enjoys solving complex technical challenges, improving platform reliability and driving automation. You bring a collaborative approach thrive in enterprise environments and are passionate about building secure resilient and high‑performing platforms.

Essential

- Significant experience in Unix/Linux systems administration or engineering within large-scale enterprise environments.
- Experience with enterprise operating systems such as Red Hat Enterprise Linux (RHEL), SUSE Linux, IBM AIX, or similar platforms.
- Advanced knowledge of Unix/Linux operating system architecture, administration, performance tuning, troubleshooting, and capacity management.
- Experience managing operating system patching, upgrades, lifecycle management, vulnerability remediation, and security hardening activities.
- Capability in Shell scripting and automation, with experience using tools such as Python, Ansible, Terraform, or equivalent technologies.
- Knowledge of storage technologies including LVM, SAN, NAS, and enterprise file systems

📌 Senior Infrastructure Engineer | Linux/Unix (Melbourne)
🏢 Leidos
📍 Melbourne