Work with Us. Change the World.

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. As the world's trusted infrastructure consulting firm, we partner 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 across Australia and globally, our teams are delivering some of the most significant transport, Defence, energy and water projects in the market.

We are seeking a Principal Drainage Engineer with extensive knowledge of 12D software to join our Perth based multidisciplinary team.

What you'll do

In this role, you will provide technical inputs in the delivery of complex drainage and stormwater engineering projects across major infrastructure and development sectors. You will play a key role in shaping design approaches, solving complex drainage and hydraulic challenges, and ensuring high-quality, practical, and compliant outcomes for our clients.

Your focus will be delivering drainage designs using 12D, preparing stormwater management plans, and hydraulic modelling. You will work closely with multidisciplinary teams, providing specialist input and mentoring engineers, while contributing to project delivery, client engagement, and work-winning activities.

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 creative 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

- Contributing to technical excellence initiatives and staying current with emerging tools, methodologies, and regulatory changes

What you'll bring

You are a recognised technical leader with deep expertise in stormwater and drainage hydraulics and a passion for delivering high-quality infrastructure outcomes.

- Around 10+ years of relevant industry experience.

- Demonstrated experience in the planning, hydraulic assessment and design of stormwater and drainage networks.

- Strong technical capability across underground and surface water drainage systems.

- Experience delivering major infrastructure projects within a consulting or multidisciplinary engineering environment.

- Proven ability to provide technical leadership, design review and mentoring.

- Strong communication and stakeholder engagement skills, with confidence working directly with clients.





- Commercial awareness and an understanding of successful project delivery principles.

Experience in the following areas will be highly regarded:

- Major road, rail, Defence, aviation, renewable energy or other large-scale infrastructure projects.

- Application of Australian Rainfall and Runoff (ARR 2019) and relevant authority drainage standards and guidelines.

- Software such as 12d, Drains, TUFLOW, HEC-RAS, MUSIC, RORB or similar hydraulic modelling tools.

- Technical governance, independent design review and project assurance.

- Established client relationships and market presence within Western Australia.

- Experience supporting the growth and development of a technical discipline or team

Why you'll love working with us

- Flexible work arrangements including alternative start/finish times, job-sharing and hybrid work options.

- Purchase up to 6 weeks additional annual leave per year.

- Volunteer and representation leave to support causes important to you.

- Flex public holidays, giving you greater choice over how and when you take leave.

You'll also benefit from access to industry-leading projects, technical experts across our global network, structured career development pathways and the opportunity to help shape some of Western Australia's most significant infrastructure investments.

Come grow with us and help deliver a better world.

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.

📌 Principal Drainage Engineer (Perth)
🏢 AECOM Australia
📍 Perth