Software Engineer – Mission Software Solutions – VIC | ACT | On-site

This role requires the successful applicant to be an Australian Citizen and an active TSPV

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 

The Mission Software Solutions business delivers customised and off-the-shelf software solutions to Defence, Intelligence and other Government customers. We develop and support technologies that address complex operational challenges, delivering trusted capabilities where quality, reliability and mission success are critical. 

Working as part of a multidisciplinary delivery team, you'll collaborate with software engineers, architects, business analysts and customers to ensure high-quality software solutions are delivered to support mission-critical outcomes.

The Opportunity

We are seeking a Software Engineer to join our growing team in either Melbourne, Victoria or Canberra. This is an on-site role supporting work within a secure environment.

You will contribute across the software development lifecycle, applying sound engineering principles to design, develop, test, integrate and deploy quality software solutions. You will work collaboratively with technical and non-technical stakeholders to solve complex problems and deliver outcomes aligned with customer goals.

This is an excellent opportunity to work on complex and meaningful projects while expanding your software engineering capability in a collaborative delivery environment.

About You

You are a quality-focused software engineer who enjoys solving problems, learning new technologies and contributing to shared team objectives. You apply disciplined engineering and testing practices and understand the importance of reliable, secure and maintainable software.

You communicate clearly, work constructively with others and can adapt between tasks as delivery priorities change. Most importantly, you are committed to customer goals and take pride in delivering software that makes a difference.

Essential for this role:

• Design innovative software solutions to complex problems.
• Participate in and lead agile story development and estimation.
• Contribute to Continuous Integration and automation.
• Integrate and deploy complex systems using SecDevOps practices.
• Undertake web-focused User Interface development and User Experience evolution.
• Research, prototype, investigate and develop technologies and systems.
• Apply solid software engineering principles, coding standards and secure development practices.
• Develop and maintain unit and integration tests and contribute to test automation.
• Investigate defects, undertake root-cause analysis and implement effective fixes.
• Produce and maintain clear technical documentation.
• Work collaboratively with multidisciplinary teams and customer stakeholders to deliver shared objectives.

Essential for this Role

• Understanding of Agile software delivery.
• The ability to apply solid engineering principles to software development.
• A focus on quality software development.
• A good understanding of testing principles and a commitment to achieving bug-free software.
• The ability to work collaboratively within a team on shared objectives.
• A commitment to customer goals.
• Adaptability to switch between tasks as directed.
• Clear written and verbal communication skills.
• Ability to analyse problems and develop practical software solutions.

Advantageous, but Not Essential

• Full-stack development with technology stacks including React, Angular, .NET and Java.
• Integration with external systems and applications using REST APIs, integration protocols, JSON and XML.
• Integration and customisation of open source technologies such as NiFi, Kafka, Elastic (ELK) Stack and Solr.
• CI/CD tools and technologies and infrastructure as code, including Ansible, GitLab and Git.
• Containerisation using Docker and Kubernetes.
• Jira and Confluence.
• Linux and Windows environments.

This role requires the successful applicant to be an Australian Citizen and an active TSPV

Applicants may also need to meet International Traffic in Arms Regulations (ITAR) requirements. In certain circumstances this can place limitations on persons who hold dual nationality, permanent residency or are former nationals of certain countries as per ITAR 126.1.

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 you're passionate about software quality and want to work on meaningful projects that support Australia's Defence and Government sectors, we'd love to hear from you. Apply via the Apply Now button with your resume.

For a confidential discussion regarding the opportunity, please contact Paul Bui, Talent Acquisition Advisor.

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.