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.

Mission Software Systems (MSS) brings together expertise across intelligence, software, and cloud to deliver end-to-end capability supporting the full intelligence lifecycle, from planning through to dissemination and feedback. The team fosters a culture of innovation, leveraging modern engineering practices and shared infrastructure to rapidly build, test, and deploy software solutions across a range of environments, including cloud. MSS also plays a key role in advancing technology modernisation within Government, delivering scalable and adaptable solutions for complex enterprise challenges.

The Opportunity

As a Software Engineer, you will play a key role in developing and enhancing software capabilities that support complex Defence and mission-critical programs. Working within a collaborative Agile environment, you will contribute to the design, integration and sustainment of simulation software that enables system analysis, verification and operational decision-making.

In this role, you will:

• Design, develop and integrate software features for a modern microservices-based distributed system, working across technologies including Golang, TypeScript, Python, Kubernetes and Docker.
• Collaborate with systems engineers, test engineers, software specialists, subject matter experts and customer stakeholders to translate operational requirements and system behaviours into high-quality software solutions.
• Support the verification and validation of complex Defence capabilities through the development of software components, interfaces, supporting tools and engineering test cases, while analysing outputs and communicating technical findings.
• Contribute to the ongoing improvement of engineering practices through peer reviews, automated testing, configuration management and Agile delivery activities, helping to ensure reliable, scalable and maintainable software solutions.

About You

You are a Software Engineer who enjoys solving complex technical challenges and working as part of a multidisciplinary team to deliver meaningful outcomes. You bring a combination of software development expertise, analytical thinking and collaboration skills, enabling you to work effectively across technical teams and customer environments.

Essential for this role:

• Experience across software design, development, integration, testing and troubleshooting within complex software environments.
• Proficiency in Golang, TypeScript, Python, Java or a comparable programming language.
• Experience developing and integrating APIs, services, interfaces or technical data exchange solutions.
• Knowledge of containerisation technologies such as Kubernetes and/or Docker.
• Experience using Git or equivalent source-control systems and participating in peer-review processes.
• Ability to investigate software defects, analyse logs and interpret simulation or system outputs to identify and resolve technical issues.
• Experience producing software design documentation, interface specifications and test artefacts.
• Experience working within Agile delivery environments and collaborating with cross-functional engineering teams.
• Strong communication and stakeholder engagement skills, with the ability to communicate technical concepts to a range of audiences.
• Relevant tertiary qualifications in Software Engineering, Computer Science or a related discipline, or equivalent industry experience.

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Advantageous:

• Experience within Defence, aerospace, command and control, communications, sensor or mission-system environments.
• Experience integrating software with complex, software-intensive systems, test environments or simulation platforms.
• Knowledge of CI/CD pipelines, DevSecOps practices and modern software delivery toolsets.
• Experience using tools such as DOORS, Jazz, Jira or Confluence.
• Experience developing web applications using Angular.
• Working knowledge of PostgreSQL or similar database technologies.
• Familiarity with Defence technologies and protocols, including IFF and Link 16.
• Experience in software performance profiling, optimisation and system tuning.
• Ability to facilitate technical workshops, present findings and engage effectively with customers and stakeholders.

This role does require the successful applicant to be an Australian Citizen and hold an NV-1 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 Praveena Sundarakumar, Talent Acquisition.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.