Systems Engineer

Job Description

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 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.

About You

You are an experienced Systems Engineer who enjoys working across the full systems engineering lifecycle and collaborating with diverse technical and non-technical stakeholders. You bring a structured approach to requirements development and system modelling, combined with the ability to translate complex problems into practical, scalable solutions.

Essential:

• Experience developing and documenting functional specifications at system and subsystem level.
• Experience working within a Model-Based Systems Engineering (MBSE) environment.
• Capability in system and subsystem modelling, including behavioural and activity diagrams.
• Hands-on experience with systems modelling tools, ideally IBM Rhapsody.
• Experience using requirements management and traceability tools such as DOORS and Jazz.
• Ability to facilitate stakeholder workshops and lead requirements elicitation activities, including use case development.
• Experience working within Agile delivery programs, including adaptive planning, user story development and story point estimation.
• Knowledge of cyber security principles, security hardening practices and ISM controls, with the ability to derive and manage cyber-related requirements.
• Experience using collaboration and delivery tools such as Jira and Confluence.

Advantageous:

• Experience working on complex Defence, Government or mission-critical engineering programs.
• Familiarity with systems integration, verification and validation activities across large-scale technology environments.
• Previous experience working within multidisciplinary engineering teams delivering software-intensive systems.

This role does require the successful applicant to be an Australian Citizen and hold an NV-1 security clearance.

Due to the nature of our work, applicants must be Australian Citizens and be eligible to obtain and maintain the security clearance required for the role. Certain roles may be subject International Traffic in Arms Regulations (ITAR) requirements which may limit persons who hold dual nationality with certain proscribed countries from accessing material, or in the case of dual Australian-U.S citizens, may require the candidate to obtain a U.S. Persons Abroad authorisation from the U.S DDTC.

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:

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

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.