Defence Engineering jobs in Sydney NSW

“I work for AECOM because we cover a broad engineering landscape which challenges our engineering and consultancy skills through the best projects. The depth of skill and knowledge across the regions means anything is possible.” – Sean O'Leary, Technical Practice Leader, Building Services VIC + SA

Everyone belongs at AECOM

Australia’s and New Zealand's Defence infrastructure challenges are multifaceted, involving the development of physical infrastructure, regulatory frameworks and human capital. Our team has earned the trust of Defence through decades of consistent delivery and genuine partnership. Behind every Defence project is a team of passionate, skilled professionals who bring deep insight, technical excellence, and a shared commitment to national security.

Australia’s Defence Future

The Australian Governments 2024 National Defence Strategy and Integrated Investment Program outline a transformative plan to strengthen the SDF, addressing strategic risks through targeted long term capability Investments.

Our Defence capability

AECOM’s Defence team partners with clients to deliver infrastructure aligned with evolving strategic needs. From scalable, future-ready solutions to minimum viable capability, we provide certainty, adaptability, and value. Backed by global expertise and deep sector insight, our integrated teams help shape resilient assets that support Australia’s Defence mission — now and into the future.

We have a number of opportunities available in our Defence business here in Australia:

• Nuclear Engineering Manager (NSQEP)
• Maritime Structures
• Building Structures (NSQEP)
• Architects (NSQEP)
• Quality & Assurance
• Nuclear System Engineers
• Design Managers
• Hydraulic Engineers
• Fire Engineers
• Mechanical, Electrical and Structural Engineers

How you’ll make a difference:

Joining AECOM’s Defence team means you will play a pivotal role in shaping the future of Australia’s Defence infrastructure. Here’s how you can make a significant impact:

• Contribute to the development of innovative and scalable infrastructure solutions that align with the Australian Government’s National Defence Strategy. Your expertise will help address strategic risks and enhance national security.
• Work on projects that improve Defence capabilities, ensuring that our solutions are future-ready and adaptable to evolving strategic needs. Your contributions will support the creation of resilient assets that are crucial for Australia’s Defence mission.
• Engage with diverse teams and stakeholders, building strong partnerships that foster collaboration and trust. Your ability to work across disciplines will enhance project outcomes and strengthen relationships with clients and partners.
• Leverage your technical skills and industry knowledge to deliver high-quality results. By maintaining rigorous standards and best practices, you will help ensure that every project meets the highest levels of excellence.
• Play a key role in mentoring and developing junior team members. By sharing your knowledge and experience, you will help cultivate a culture of learning and continuous improvement within the team.
• Championing Innovation: Be a catalyst for change by introducing new ideas and methodologies. Your innovative mindset will drive AECOM’s Defence business forward, positioning us as a leader in the industry.
• Ultimately, your work will have a direct impact on national security, helping to ensure that Australia’s Defence forces are equipped with the infrastructure and capabilities they need to protect our nation.

The qualities that help you thrive

You will have suitable qualifications and practical engineering experience in the defence industry (nuclear experience highly regarded). You will hold or be able to obtain relevant security clearances from AUKUS.

Whilst our preference is Adelaide, these roles can also be based in Sydney, Brisbane or Melbourne.

To express your interest in these roles, we seek candidates with the following experience:

• Relevant Qualifications: A degree in engineering, or a related field.
• Industry Experience: Proven experience in Defence projects or related sectors, with a focus on infrastructure development.
• Technical Skills: Expertise in your respective discipline, with a strong understanding of current industry standards and regulations.
• Leadership and Collaboration: Experience in leading teams and collaborating with cross-functional groups to deliver projects effectively.
• Commitment to Quality: A strong commitment to quality assurance and compliance, ensuring the highest standards are met.

If you are passionate about making a difference in Australia’s Defence landscape and are ready for a new challenge, we want to hear from you!

Join AECOM and be part of a team that shapes the future of Defence infrastructure!

All your information will be kept confidential according to EEO guidelines.

About AECOM

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.

What makes AECOM a great place to work

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity.

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.