Lead Wastewater Process Engineer

“Supported by people, local and global communities who are not only willing to guide but also nurture professional development and leadership” – 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, as well as maximising resource recovery and energy efficiency.

AECOM is delivering some of Australia’s most critical water infrastructure projects. With multiple long-term partnerships with Water clients nationwide, we offer an unparalleled opportunity to work on complex and high-impact projects across the country.

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.

Following significant contract awards in our Australia/New Zealand Water business line, AECOM’s Water Infrastructure team is searching for a proven Process Engineer to join our global team of water process engineering specialists.

We’re seeking someone with a passion for technical excellence and who is looking to further develop their experience in delivering multi-disciplinary projects in a global organisation. The Water Infrastructure group provides services to a range of internal and external clients with a key focus on supporting sustainable outcomes for our clients and the communities they serve.

Come and be part of a growing high performing team in Melbourne.

How you’ll make a difference

• Lead the delivery of complex water and wastewater treatment projects across ANZ
• Develop and implement innovative process engineering solutions, with a focus on advanced technologies and sustainable outcomes
• Provide technical leadership, solving complex challenges and guiding best-practice design approaches
• Build strong client relationships, understanding their needs and delivering tailored, high-value solutions
• Support business growth by contributing to proposals, winning work, and expanding our project portfolio
• Mentor and develop junior engineers, building team capability and fostering a culture of learning and innovation.

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

• Engineering degree (essential); CPEng and/or RPEQ/RPEV highly regarded
• Strong experience in wastewater treatment at a senior/technical leadership level
• Deep knowledge of treatment processes, plant design, and ANZ regulations
• Experience across the full asset lifecycle
• Well-connected in the Australian water industry
• Strong analytical, problem-solving, and process engineering skills
• Excellent communicator with a client-focused, people-first approach
• Able to contribute to multiple projects simultaneously.

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.

Learn more about life at AECOM: LinkedIn, Facebook , Instagram, X, YouTube - explore our AECOM voices, employee stories, latest projects, and much more!

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.