Software Engineers

Junior to Senior Levels | Mission Software Systems

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. Meaningful work is supported by benefits, flexibility and career pathways that help you balance professional development with life outside work.

Our benefits include:

- Flex Your Way: Options may include Life Days, part-time arrangements, job sharing and compressed hours.

- Wellbeing That Matters: Access to Headspace, MeQuilibrium and dedicated wellness support.

- Learn Without Limits: Access to more than 120,000 on-demand courses, as well as technical, project management, leadership and career development opportunities.

- Work That Makes an Impact: Contribute to nationally significant projects and solve complex technical challenges.

- Build Your Future: Develop your technical expertise, broaden your experience or prepare for future leadership opportunities.

About the Team

You will join a collaborative engineering team that values integrity, inclusion, innovation, agility, shared ownership and commitment. The team works together to solve complex problems while staying connected to the customer environment, the purpose behind the work and the outcomes our solutions need to deliver.

Mission Software Systems brings together expertise across intelligence, software and cloud technologies to deliver end-to-end capability supporting the intelligence lifecycle. The team uses modern engineering practices and shared infrastructure to rapidly design, build, test and deploy secure software across a range of environments, including cloud-based platforms.

The Opportunity

We are seeking Software Engineers across multiple levels, from junior engineers beginning their careers through to experienced senior engineers and technical leaders.

You will contribute to the design, development, integration and support of secure software solutions for defence and national security environments. The scope of your responsibilities will reflect your experience, technical capability and career goals.

This opportunity may suit you if you are:

- A junior software engineer seeking practical experience, structured technical support and exposure to mission-critical software projects.

- A mid-level software engineer ready to take ownership of software components,



integrations and delivery outcomes.

- A senior software engineer capable of leading technical design, resolving complex engineering challenges and supporting the development of other engineers.

Depending on your level of experience, your responsibilities may include:

- Designing, developing, testing and maintaining software applications, services, APIs, integrations and supporting components.

- Translating customer and project requirements into practical technical designs and implementation tasks.

- Contributing to code reviews, design discussions, troubleshooting and performance optimisation.

- Developing secure, reliable and maintainable software using contemporary engineering practices.

- Supporting automated testing, CI/CD pipelines and deployment processes.

- Working with containerised and cloud-based development environments.

- Collaborating with systems, cloud, DevOps, security and project delivery specialists.

- Engaging with technical and non-technical stakeholders to understand requirements and communicate progress, risks and options.

- Using AI-enabled development tools responsibly to improve productivity, software quality and engineering efficiency.

- For more experienced applicants, providing technical direction, mentoring engineers and establishing standards that improve quality and consistency.

About You

You are a team-oriented software engineer who enjoys solving meaningful technical problems and contributing to secure, dependable solutions.

We welcome applicants at different stages of their careers. You do not need to meet every technical requirement to apply. The level of the position and responsibilities will be aligned with your demonstrated experience and capability.

You may bring experience or knowledge in some of the following areas:

- Software development using contemporary programming languages and frameworks.

- Java, Spring Boot, React or related open-source technologies.

- Full stack, back-end or front-end software development.

- API development and integration with external systems, services or data sources.

- Automated testing, CI/CD and Git-based development workflows.

- Tools and technologies such as Jenkins, Ansible, Docker or Kubernetes.

- Cloud-based or containerised development and deployment environments.

- Troubleshooting, software optimisation and secure coding practices.

- Collaboration and delivery tools such as Jira and Confluence.





- Working within multidisciplinary engineering or project teams.

- Communicating technical concepts to both technical and non-technical stakeholders.

For junior opportunities, we are interested in your foundational software engineering skills, aptitude, willingness to learn and ability to work effectively within a team.

For senior opportunities, we will look for demonstrated experience in technical design, complex software delivery, engineering leadership, code and design reviews, mentoring, stakeholder engagement and the development of secure, scalable and maintainable solutions.

Citizenship, Security Clearance and Location Requirements

- Due to the secure nature of this work, applicants must meet all of the following requirements:

- Be an Australian Citizen.

- Currently hold an Australian Government security clearance at NV1, NV2 or TSPV level.

- Be able to obtain and maintain any customer-specific access approvals required for the position.

- Be able and willing to work from our office and customer locations in the south-eastern suburbs of Melbourne, Victoria.

Applicants holding any of the listed clearance levels are encouraged to apply. Available projects and responsibilities will be matched to the applicant’s clearance level, experience and technical capability.

Certain positions may also be subject to International Traffic in Arms Regulations requirements. These requirements may affect access to controlled material for individuals who hold dual nationality with certain proscribed countries. Dual Australian and United States citizens may be required to obtain a U.S. Persons Abroad authorisation from the U.S. Department of State’s Directorate of Defense Trade Controls.

What to Expect When You Apply

Our recruitment process is designed to be straightforward, respectful and easy to navigate. If your skills, experience, citizenship, clearance and location align with the opportunity, our Talent Acquisition team will contact you to discuss the next stage.

The process may include:

- An initial conversation with our Talent Acquisition team.

- An interview with the hiring manager or interview panel.

- A technical discussion or role-specific assessment.

- Any customer or security-related steps required for the position.

We will explain what to expect before each stage, including who you will meet and how you can prepare. If you require adjustments or support during the recruitment process, please let us know.

Ready to Explore What’s Possible?

Whether you are developing your software engineering career or are an experienced engineer ready to lead complex technical work, we would like to hear from you.

Please apply via the Apply Now button with your resume. For questions about the opportunity or recruitment process, please contact Pat Horwood, Talent Acquisition.

📌 Software Engineers (Junior to senior) (Melbourne)
🏢 Leidos Australia
📍 Melbourne