Principal Drainage Engineer - 12D Specialist & Infra Lead

Aecom Australia Pty Ltd; Western Australia; On-site; AUD 180,000 - 240,000; Full time

Benefits offered by this job

Flexible work arrangements

Hybrid work options

Additional annual leave

Job summary

AECOM in Perth seeks a Principal Drainage Engineer with extensive knowledge of 12D software to deliver drainage and stormwater design for major infrastructure projects. You will lead technical delivery, mentor engineers, and collaborate with multidisciplinary teams to shape design approaches and deliver compliant outcomes.

Your focus includes delivering drainage designs using 12D, preparing stormwater management plans and hydraulic modelling, and engaging with clients and regulators to support

Qualifications

• 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.

Responsibilities

• 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.

Skills

Drainage hydraulics

12D software

Hydraulic modelling

Technical leadership

Stakeholder engagement

Tools

12d

Drains

TUFLOW

HEC-RAS

MUSIC

RORB

Job description

AECOM in Perth seeks a Principal Drainage Engineer with extensive knowledge of 12D software to deliver drainage and stormwater design for major infrastructure projects. You will lead technical delivery, mentor engineers, and collaborate with multidisciplinary teams to shape design approaches and deliver compliant outcomes.

Your focus includes delivering drainage designs using 12D, preparing stormwater management plans and hydraulic modelling, and engaging with clients and regulators to support