North West Australia Senior Principals & Principals

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Introducing our 2021 Senior Principals and Principals for North West Australia.

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 David James

David James

Perth, Western Australia

David is Regional Manager of WA/NT for Cardno with over 16 years of technical expertise in contamination/environmental assessments and management and more recently experience Mine Closure and in senior leadership and management roles in the consulting industry in Australia. He has vast experience in large scale remediation (soil/sediment, air and groundwater) and industrial and mine site decommissioning within a remediation scientist, project management and stakeholder management role. 

David has recently specialised in the assessment, management and remediation of a range of site impacted by per- and poly-fluoroalkyl substances (PFAS) including Defence, mine’s, landfills, refineries and former industrial sites. David has demonstrated capability in leadership, corporate governance, strategic planning, cultural change, entrepreneurship and innovation, business development and team building. In particular, managing and developing staff to apply expertise to decision-making, planning and creative solutions.


Jacob Martin

SENIOR PRINCIPAL | Traffic & Transport Planning
Perth, Western Australia

Jacob is responsible for traffic and transport analysis throughout regional and metropolitan Western Australia, including studies for mixed-use, residential, recreational and commercial developments. He has experience in the evaluation of complex traffic and transport scenarios at all scales, from individual site assessment to network infrastructure and city master planning.


Photo of Senior Principal Jacob Martin

Photo of Senior Principal Warren Steiner

Warren Steiner

Brisbane, Queensland

Warren is a Chartered Civil Engineer experienced in the planning, design and delivery of infrastructure and land development projects within Australia and the United Kingdom. Warren specialises in the management of multidiscipline teams offering wide-ranging skills through the feasibility, planning, design and construction phases. Warren is experienced working across a number of master-planned development projects in South-East Queensland.


Stephen Walker

SENIOR PRINCIPAL | Asset Management
Brisbane, Queensland

Stephen is a Chartered Engineer and Economist experienced in the asset management of public infrastructure including water and sewerage, power, roads and public facilities (education, health). Stephen has particular expertise in the areas of capital expenditure governance and expenditure efficiency assessment. He has also led a number of strategic asset management projects and for the implementation of ISO55001 for local, state and federal government organisations.


Photo of Senior Principal Stephen Walker



Erica Barrenger

Principal - Project Management

Perth, Western Australia

Riccardo Divita

Principal - Hydrogeology

Perth, Western Australia

Tracey Doyle

Principal - Civil Engineering

Mackay, Queensland

Kris Hird

Principal - Bridges

Perth, Western Australia

Adrian Kho

Principal - Geotehcnical

Brisbane, Queensland

Geoffrey Kleu

Principal - Asset Management

Wollongong, New South Wales

Megan Kraft

Principal - Civil Engineering

Wide Bay, Queensland

Simon Leckie

Principal - Geotehcnical

Perth, Western Australia

Chris Mantell

Principal - Civil Engineering

Springfield, Australia

Mark Marczk

Principal - Transportation

Townsville, Queensland

Brendan Melita

Principal - Structural Engineering

Townsville, Australia

Brett Roman

Principal - Contaminated Sites Assessment & Remediation

Brisbane, Queensland

Daniel Strickland

Principal - Coastal Engineering

Perth, Western Australia


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.