Associate Director Mechanical Engineering - Water Infrastructure

“Having worked over 20 years, in both consultancies and council, my experience working at AECOM has been refreshing and motivating” - Dominique Keirens, Technical Director - Water Gold Coast, QLD

Come grow with us.

Balancing the world’s need for safe, reliable water with protecting this critical natural resource for the future requires a deep understanding of interconnected systems.

We work with clients across the entire project life cycle - from initial planning studies through final construction and operations and maintenance services - on both traditional and alternative project-delivery options (design-build, public-private partnerships and financing).

With a robust design and construction division, AECOM offers a unique perspective on designing projects that are fully constructible.

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.

Exciting opportunities await! With significant contract wins fueling our growth, we're expanding our Water Infrastructure Team in Melbourne, VIC. Our team delivers vital services to a diverse array of clients, tackling challenges in water and wastewater treatment, dams, asset management, major conveyance, and more. We're committed to driving sustainable outcomes for our clients and the communities we serve.

Step into the role of Associate Director Mechanical Engineer and take the lead in shaping strategy, design governance and comprehensive delivery for complex water and wastewater treatment and conveyance programs. As the Lead Verifier, you'll set the technical standard, guide multidisciplinary teams, champion HAZOP/HAZID initiatives, and nurture emerging talent while strengthening client relationships across Victoria. Join us and make a meaningful impact!

How you’ll make a difference

• Act as Lead Verifier for Mechanical design drawings, mechanical plant selection, specifications, WIMES Data Sheets, Valve schedules, Equipment Schedules, lifting strategies, hydraulic headloss calculations and P&IDs.
• Prepare feasibility studies, outline design, detailed design and construction support.
• Liaise and collaborate with our water and other discipline teams including civil, electrical, process and mechanical engineers nationwide.
• Lead a Mechanical Engineering Team in designing mechanical elements for Water Treatment Plants, Wastewater Treatment Plants, and infrastructure projects. This includes developing scopes, proposals, estimates, and programs for projects such as WwTW and WTW.
• Supporting the Project Manager and Design Lead to successfully deliver the Mechanical Scope to program and budget
• Mentor and support junior engineers and provide training and development.
• Visit site to carry surveys and support of liaisons with clients, contractors & suppliers.
• Lead and contribute to design review meetings such as HAZOPs, HAZIDs, ALMs and SWIFTS.

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.

The qualities that help you thrive

• A degree (or equivalent) in Mechanical Engineering.
• Be a Chartered Engineer with a relevant institution, such as IMechE.
• Extensive experience (ideally 15 years +) in leading and delivering innovative solutions for multidisciplinary projects in Water Infrastructure.
• Well-established client networks across Australia, ideally with strong relationships and market presence in Victoria, including key water, infrastructure, government, and contractor stakeholders.
• A proven ability to deliver engineering designs, reports, drawings, technical specifications, and calculations with confidence and precision.

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
• Volunteer and representation leave
• Flex public holidays - swap Easter or other holidays for ones that suit you better

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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At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

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.