Systems Engineer

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.

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.

As a Systems Engineer, you will play a key role in shaping and defining complex system capabilities within a collaborative, Agile delivery environment. Working closely with engineers, architects, cyber specialists and program stakeholders, you will help translate operational needs into robust system designs and requirements that support successful project outcomes. In this role, you will: Lead the development and management of system and subsystem requirements, producing high-quality functional specifications and maintaining traceability using tools such as DOORS and Jazz. Apply Model-Based Systems Engineering (MBSE) practices to analyse, model and define system behaviours, architectures and interfaces, leveraging tools such as Rhapsody to develop activity, behavioural and other system models. Facilitate workshops and engagement sessions with customers and stakeholders to capture use cases, validate requirements and align technical solutions with program objectives. Contribute to Agile delivery activities including user story development, sprint planning, estimation and continuous improvement, while ensuring cyber security and ISM control requirements are incorporated into system designs.

You are an experienced Systems Engineer who enjoys working across the full