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At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Here is what you will be doing:

As a Principal Engineer in our Water Resources team in Centurion, you will provide specialist stormwater drainage design and analysis for a broad range of roads and rail infrastructure, primarily serving Australia and New Zealand, while supporting other geographies as needed.

Key responsibilities include:

• Technical delivery of drainage designs, stormwater management plans, and hydraulic assessments for major infrastructure projects
• Providing expert input into hydrologic and hydraulic analysis using 12D and DRAINS.
• Developing practical and innovative solutions to complex drainage, flooding, and water quality challenges
• Reviewing and approving engineering designs, models, and technical documentation to ensure accuracy, quality, and compliance
• Supporting project teams through technical guidance, mentoring, and quality assurance
• Engaging with clients, regulators, and stakeholders to provide trusted technical advice and contribute to winning work
• Ensuring alignment with Australian standards and guidelines
• Contributing to technical excellence initiatives and staying current with emerging tools, methodologies, and regulatory changes.
• Coaching and mentoring younger engineers.

Here is what we are looking for:

• 12 to 18 years' experience in a similar role - essential
• Proven experience delivering complex drainage projects using 12D software
• Demonstrated experience in drainage design, including open channel and piped systems, culverts, and stormwater management for roads, rail, and major civil works
• Strong knowledge of hydrologic and hydraulic modelling, water quality, and stormwater management practices
• Demonstrated experience with a combination of relevant software such as 12D, DRAINS, and/or similar tools
• Good working knowledge of the relevant Australian Standards and guidelines
• Experience in contributing to proposals and supporting work-winning within a consultancy environment
• Demonstrated ability to manage multiple projects and provide technical oversight and quality assurance
• Exceptional written and verbal communication skills for both technical and non-technical audiences
• Bachelor’s degree in civil engineering, or equivalent.
• Professional registration with ECSA as a Professional Engineer.

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.

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.