Mission Systems Engineer

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.

We deliver prime systems integration projects which build, develop and support military solutions for Defence. The team focuses on leveraging our local engineering, our services expertise, and global products to bring new capabilities to the Australian Defence Force.

The Opportunity

This role is an opportunity to contribute to our Land and Sea Systems line of business by delivering outcomes that matter. You will work with the Technical Lead to understand priorities, solve problems and support delivery of SEA1770.

In this role, you will:

• Develop, maintain and support mission system software baselines, including software imaging, application testing, interface testing, and security patching.

• Ensure effective integration and performance across mission system elements supporting Royal Australian Navy capabilities.

• Investigate and resolve complex system defects using a whole-of-system engineering approach.

• Contribute to Security Accreditation activities within the Defence ICT Cyber Security Accreditation Framework.

• Design, implement and document technical solutions, system configurations and engineering processes.

• Provide technical guidance to maintenance teams and end users while supporting capability enhancements and mentoring junior engineers.

About You

We are looking for someone who brings judgement, curiosity and a collaborative approach to work that matters.

Essential for this role:

• Bachelor’s degree in Computer Systems, Telecommunications/Networks, Mechatronics, Robotics, or a related Engineering discipline.

• Experience supporting ICT infrastructure and platforms, including Windows, Linux, Active Directory, and cyber security controls.

• Working knowledge of Defence ICT cyber security accreditation frameworks and security governance requirements.

• Experience deploying, integrating, and managing software applications across complex hardware and mission systems.

• Understanding of Systems Engineering and Integrated Logistics Support principles to support capability sustainment and enhancement.

• Experience producing engineering documentation, managing technical change, and identifying and mitigating cyber security risks.

Advantageous, but not essential:

• Experience within a Defence, Government, or critical systems environment.

This role requires the successful applicant to be an Australian citizen and be eligible to obtain Baseline security clearance.

If this role interests you, we encourage you to apply. We value different experiences and are interested in the capability and potential you could bring.

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.

Ready to explore what’s possible?

If this sounds like a role where you can make an impact and continue to grow, we’d like to hear from you. Please apply via the “Apply Now” button with your resume. If you have any questions about the role or recruitment process, please contact Kat Buckingham, Talent Acquisition.