System Architect

Leidos Australia; Melbourne; On-site; AUD 120,000 - 170,000; Full time

Benefits offered by this job

Flex Your Way

Headspace & wellbeing

On-demand courses

Impactful national projects

Career development

Growth opportunities

Job summary

Leidos Australia is seeking a seasoned Architecture professional to define and govern the architecture of complex systems from concept to delivery and sustainment. You will translate needs into coherent structures, interfaces and design principles while guiding multidisciplinary teams through key decisions.

Develop architectures, decompose requirements, and lead reviews with engineering, security and delivery teams to ensure alignment and ongoing governance.

Qualifications

• Experience developing system, solution or enterprise architectures for complex technical environments.
• Knowledge of requirements decomposition, functional analysis, interfaces and systems engineering lifecycle practices.
• Capability in architecture modelling, design documentation and technical governance.
• Experience evaluating solution options and communicating trade-offs, risks and recommendations.
• Ability to collaborate across engineering disciplines and maintain alignment between architecture and implementation.
• Experience engaging customers, technical authorities and delivery leadership.

Responsibilities

• Develop system architectures, viewpoints, models and technical roadmaps aligned with capability and lifecycle requirements.
• Decompose operational needs into system requirements, functions, components and interfaces.
• Lead architecture reviews, option assessments and technical trade studies, documenting decisions and constraints.
• Work with engineering, security, integration and project teams to maintain architectural integrity as the solution evolves.

Skills

System architectures

Requirements decomposition

Architecture modelling

Stakeholder engagement

Cross-functional collaboration

Clear architectural communication

Tools

MBSE tools

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.

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.

Benefits

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

In this role, you will define and govern the architecture of complex systems from concept through delivery and sustainment. You will translate operational needs into coherent system structures, interfaces and design principles while guiding teams through significant technical decisions.

• Develop system architectures, viewpoints, models and technical roadmaps aligned with capability and lifecycle requirements.
• Decompose operational needs into system requirements, functions, components and interfaces.
• Lead architecture reviews, option assessments and technical trade studies, documenting decisions and constraints.
• Work with engineering, security, integration and project teams to maintain architectural integrity as the solution evolves.

About You

You can move comfortably between strategic context and technical detail. You bring systems thinking, communicate architecture clearly and can guide multidisciplinary teams through competing constraints and design choices.

Essential

• Experience developing system, solution or enterprise architectures for complex technical environments.
• Knowledge of requirements decomposition, functional analysis, interfaces and systems engineering lifecycle practices.
• Capability in architecture modelling, design documentation and technical governance.
• Experience evaluating solution options and communicating trade-offs, risks and recommendations.
• Ability to collaborate across engineering disciplines and maintain alignment between architecture and implementation.
• Experience engaging customers, technical authorities and delivery leadership.

Advantageous

• Knowledge of recognised architecture frameworks or modelling languages.
• Experience with model-based systems engineering or digital engineering tools.
• Exposure to secure, safety-critical or mission-critical systems.

This role does requires the successful applicant to be an Australian Citizen and hold an active TSPV Clearance, accompanied by the ability to be successful for OSA.

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.

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.

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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay And Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [e-mail].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.