Mechanical Engineer (Defence)

Come and grow with us.

Our global portfolio of work comprises the design of iconic and award-winning buildings and landscapes. From strategic planning through to project realisation, the connections we make among people and place provide sustainable outcomes for our clients and the communities we serve. We place a premium on investing in digital capabilities and innovations which bring a unique consistency and efficiency to our scalable work. Together with our clients, we are working to evolve and elevate the built environment across sectors including social infrastructure, transit, technology and logistics, and commercial and corporate real estate, while focusing on solutions that promote long term health and wellbeing for all.

Everyone belongs at AECOM

We’re committed to diversity, equity, inclusion, and belonging - because great ideas come from diverse perspectives. AECOM is proud to be a Fortune 500 Most Admired Company, a WGEA Employer of Choice for Gender Equality, #Work180 Equitable Workplace Awards 2025 Winner and an AWEI Bronze Tier LGBTQ+ Inclusive Employer.

Our Building Services team are currently looking for a Mechanical Engineer to operate across defence projects. This will be a technically focused role, where you will be supported by Senior Engineers and multidisciplinary professionals, while engaging in diverse technical projects and establishing well-defined procedures. This role would suit a junior / recently graduated mechanical engineer with some building services exposure. 

Whilst our preference is Adelaide, this role can also be based in Brisbane or Melbourne. 

How you’ll make a difference:

As a Mechanical Engineer in our Building Services team, you will:

• Deliver design services and advice across a range of market sectors, mainly on Defence projects, with the opportunity to work on Data Centre, Aviation, Healthcare, Education and Transport Infrastructure projects too.
• Proactively identify opportunities for improvement whilst supporting the team of modelers and engineers with client delivery.
• Grow your technical experience as part of an experienced team.
• Perform work in accordance with agreed upon budget and schedule with moderate supervision.
• Preparing technical design documentation under senior guidance whilst assisting with the incorporation of sustainable mechanical design initiatives. 

The qualities that help you thrive

The following qualifications and experience are highly desired, but if you don’t tick all the boxes, you could still be a perfect fit for this role. Please apply, all applications will be considered.

• BEng in Mechanical Engineering with knowledge or exposure to Camel or IES software (not essential but advantageous).
• Experience working for a Building Services Consultancy or have demonstrable design experience working as a Mechanical Engineer for a Contractor or State Government.
• Demonstrated experience and understanding of standards, requirements and legislation related to building services design. 
• Prior experience or understanding of Revit, not essential but advantageous.
• Australian Citizen, and ability to obtain a Defence Clearance.

Previous Defence experience is strongly preferred, with nuclear industry experience highly regarded.

Why you’ll love working with us:

• Flexible work arrangements, including alternative start/finish times, part-time, job-sharing and hybrid work options
• Purchase up to 6 weeks additional annual leave per year         
• Flex public holidays – swap Easter or other holidays for ones that suit you better
• Continuous learning and growth - lunch and learns, professional development courses, financial study assistance, 5 days paid study leave, global career opportunities

Ready to push the limits of what’s possible?

We welcome applications from individuals of all backgrounds, including those with disabilities, additional health or mental health needs, and/or neurodiverse conditions. If you require any adjustments during the hiring process, please let us know.

Applications are reviewed as they come in, and the role may close earlier than expected, so if this opportunity sounds like you, we encourage you to apply as soon as possible.

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AECOM acknowledges the Traditional Owners and Custodians of the lands on which we, our clients and our communities live and work around Australia. We pay our respects to their cultures and to their Elders — past, present, and emerging. We are committed to connecting to Country in our work through meaningful engagement with First Nations peoples and businesses.  Find out more about our Australian Reconciliation Action Plan here: https://aecom.com/au/our-vision-for-reconciliation/.

About AECOM

AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $16.1 billion in fiscal year 2025. See how we are delivering sustainable legacies for generations to come at aecom.com and @AECOM.

Freedom to Grow in a World of Opportunity 

You will have the flexibility you need to do your best work with hybrid work options. Whether you’re working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed.

You will help us foster a culture of equity, diversity and inclusion – a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients.

AECOM provides a wide array of compensation and benefits programs to meet the diverse needs of our employees and their families. We also provide a robust global well-being program. We’re the world’s trusted global infrastructure firm, and we’re in this together – your growth and success are ours too.

Join us, and you’ll get all the benefits of being a part of a global, publicly traded firm – access to industry-leading technology and thinking and transformational work with big impact and work flexibility. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours.