Water & Environment Senior Principals & Principals

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Introducing our 2021 Senior Principals and Principals for Water & Environment.

Our new appointees will showcase their expertise, experience, and technical leadership within Cardno by mentoring, knowledge sharing and innovating across their service line area. They will also actively engage in industry events and thought leadership.



Photo of Senior Principal Bradley Elliott

Bradley Elliott

SENIOR PRINCIPAL | Water/Wastewater Infrastructure
Wollongong, New South Wales

Bradley is a Chartered Professional Engineer with over 17 years of experience in a wide range of water infrastructure projects including water and wastewater treatment plants, pump stations and pipeline. Bradley has experience in the management of multi-discipline design teams and conducting the process mechanical design for water and wastewater treatment plants and pump stations. 


David Wassman

Sunshine Coast, Queensland

David Wassman is a CEnvP and Infrastructure Sustainability Accredited Professional who has been with Cardno since mid-2010. David has approximately 15 years' experience in the environmental field working as a field ecologist and site environmental advisor. He has a broad range of environmental skills, specialising in the areas of ecological assessments, vegetation management, flora and fauna surveys and Regional Ecosystem mapping and classification. He provides specialist ecological and general environmental advice to clients across a range of sectors including linear infrastructure, mining, local government, industrial and commercial development and master planning. 

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Photo of Senior Principal David Wassman

Photo of Senior Principal David Whyte

David Whyte

SENIOR PRINCIPAL | Water Resources
Sydney, New South Wales

David is a Water Engineer with 19 years' experience in the water industry. David specialises in hydrology, hydraulic modelling and drainage design. David has experience in delivering a wide range of projects including hydrology, one-dimensional and two-dimensional hydraulic numerical modelling, flood studies and flood risk management studies, transport infrastructure, urban drainage, dam break assessments, environmental assessments, water infrastructure investigations and coastal, estuarine, wetland, lake and river system studies.

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Photo of Principal Brendan Alderson

Brendan Alderson

PRINCIPAL  |  Aquatic Ecology  |  Sydney, New South Wales

Brendan has worked in the field of aquatic environmental research and consultancy for over 18 years as a scientist specialising in aquatic ecology. He has conducted ecological work throughout Australia, specialising in environmental assessments, management plans and monitoring programs.


Photo of Principal Mary Timms

Mary Timms

PRINCIPAL  |  Environment  |  Brisbane, Queensland

Mary is a terrestrial ecologist and environmental scientist with over 12 years' experience in the environment industry. She is a Certified Environmental Practitioner experienced in providing specialist ecological and environmental advice to a broad range of clients including local and state government, transport, construction, linear infrastructure, private and commercial developments, conservation and environmental planning.

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Photo of Principal Stuart McTaggart

Stuart McTaggart

PRINCIPAL  |  Hydrology/Civil Engineering  |  Sydney, New South Wales

Stuart is a Chartered Civil Engineer with 17 years’ experience in stormwater drainage, flood risk management, water quality management and civil engineering design. He has worked in Australia and the UK and across public and private sectors. He has helped deliver a wide variety of projects ranging from small-scale residential through to nationally significant infrastructure.


Photo of Principal Gary Patterson

Gary Patterson

PRINCIPAL  |  Water/Wastewater Infrastructure  |  Brisbane, Queensland

Gary has 23 years’ experience in the field of water and wastewater engineering throughout Australia and South Africa. His strong technical knowledge in the design and delivery of water and wastewater projects covering treatment plants, pumping stations, trunk infrastructure and project management together with his skills in collaborative project delivery delivers client-oriented outcomes.


You can learn more about the opportunities we offer all employees and more about our Technical Excellence program here. Meet our Global and Regional Senior Principals.