System Engineer - Unix | 6-month Fixed Term Contract

Leidos; City of Melbourne; On-site; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Flex Your Way

Wellbeing That Matters

Learn Without Limits

Work That Makes an Impact

Build Your Future

Job summary

Leidos Australia is seeking a Systems Engineer – Unix to design, build and operate modern Unix/Linux infrastructure across on‑premises, hybrid and cloud environments.

You will work with architecture, project management and security teams to deliver reliable, secure platforms, while driving automation, IaC and continuous improvement to maximise deployment efficiency and resilience.

Qualifications

• Experience as a Unix/Linux Systems Engineer or Infrastructure Engineer for enterprise-scale environments.
• Deep knowledge of Unix/Linux platforms (e.g., AIX, RHEL, SUSE, Solaris, HP-UX) incl. admin, tuning and troubleshooting.
• Shell scripting and automation for provisioning, configuration management, patching and upgrades.
• Understanding of storage, networking and infrastructure services (FS, LVM, SAN/NAS, TCP/IP, DNS, SSH, NFS).
• Experience with security hardening, vulnerability remediation, backup and recovery, monitoring and high-availability.
• Ability to document technical work, manage risks and collaborate with project, operations and vendor teams.

Responsibilities

• Design, build, configure, test and transition Unix/Linux infrastructure across on-premises, hybrid and cloud.
• Support major projects including upgrades, migrations, modernisation, app/db transitions and cloud adoption.
• Collaborate with architects, project managers, app/db/networks/storage, security and operations to deliver secure infra.
• Drive automation and IaC to improve deployment consistency, efficiency and platform reliability.

Skills

Unix/Linux Systems Engineer

Shell scripting & automation

Unix/Linux platforms knowledge

Storage & networking understanding

Security hardening & high availability

Technical documentation

Tools

Ansible

Terraform

Kubernetes

CI/CD

Job description

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.

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 Opportunity

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.

About You

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 system administration, performance tuning and troubleshooting.

• Capability in Shell scripting and automation, with experience in system provisioning, configuration management, patching and upgrades.

• Understanding of storage, networking and infrastructure services, including file systems, LVM, SAN/NAS, TCP/IP, DNS, SSH and NFS.

• Experience implementing security hardening, vulnerability remediation, backup and recovery, monitoring, and high-availability solutions.

• Ability to develop technical documentation, manage technical risks and work effectively with project, operational and vendor stakeholders.

Advantageous:

• Experience supporting Unix/Linux workloads across cloud and hybrid environments.

• Knowledge of AWS, Microsoft Azure, Oracle Cloud Infrastructure or other enterprise cloud platforms.

• Experience with automation and Infrastructure as Code tools such as Ansible, Terraform or equivalent technologies.

• Exposure to containers, Kubernetes, CI/CD pipelines and modern DevOps practices.

• Python scripting experience for infrastructure automation, orchestration or operational efficiency initiatives.

• Relevant certifications in Linux, IBM AIX, Unix, cloud, automation or infrastructure technologies, and/or tertiary qualifications in a related discipline.

This role requires the successful applicant to be an Australian citizen and hold an NV-1 security clearance.

What to Expect When You Apply

Our hiring process is designed to be straightforward, respectful and easy to navigate. If your skills, experience and qualifications look aligned with the role, our Talent Acquisition team will contact you to discuss the next stage. You can expect:

• An initial conversation with our Talent Acquisition team

• An interview with the hiring manager or interview panel

• Any role-specific assessment, technical discussion or customer step required for the position

We’ll let you know what to expect before each stage, including who you’ll meet and how to prepare. If you need any adjustments or support during the process, please let us know.

If you have any questions about the role or recruitment process, please contact Praveena Sundarakumar, Talent Acquisition.