TETRA TECH COFFEY - Key Persons


Aaron Holmes

Job Titles:
  • Head of Practice

Alice Chaplin

Job Titles:
  • Member of the Management Team
  • Chartered Engineer With a Masters
  • General Manager of New Zealand
Alice is General Manager of New Zealand and is responsible for the business strategy, commercial performance, building client relationships and mentoring staff to bring out their full potential. She is also the global chair for diversity and inclusion council for Tetra Tech. Alice joined Tetra Tech Coffey in 2018 with over 20 years' experience working across a wide variety of projects for large civil infrastructure engineering projects in New Zealand, Australia, and the UK. Her key areas of technical expertise include constructability for large civil infrastructure engineering projects, risk management, and safety in design Alice is a Chartered Engineer with a Masters in Civil Engineering from the Imperial College London.

Andrew Mailer

Job Titles:
  • Member of the Management Team
  • CAM Division Head of Asia Pacific Strategy and Growth, General Manager of NSW / ACT / QLD
  • General Manager of NSW / ACT / QLD
Andrew is Tetra Tech's Commercial Account Management (CAM) Division Head of Asia Pacific Strategy and Growth. In this role, he supports the development and implementation of our high-performance growth plan across Australia, New Zealand, and the greater Asia Pacific region. Andrew is also General Manager of NSW/ACT/QLD, responsible for business strategy, commercial performance, and our people. Andrew joined Tetra Tech Coffey in 2011, and has held operational leadership positions in Canada, New Zealand, and Australia, supporting clients with exposure to the oil and gas, property, transport, and infrastructure sectors. Andrew has a Bachelor of Commerce and a Master of Commerce - Business Strategy from the University of New South Wales.

Brigid Moriarty - President

Job Titles:
  • Member of the Management Team
  • President
  • President and General Manager of Major Projects
As President of Tetra Tech Coffey, Brigid leads our business across Australia, New Zealand, and the broader Pacific region to ensure we are delivering effective services to our clients, maintaining successful project delivery, and supporting our staff in their development. Brigid is also the General manager of Major Projects, helping to bring the best teams together to support highly complex and challenging infrastructure projects and manage associated project risk. As an engineer specialising in the field of hydrogeology, she is dedicated to uniting our experts across Tetra Tech Coffey and the broader Tetra Tech family who are leaders in their technical fields. Brigid joined the organisation in 2012 and since then has led successful and diverse teams, delivering projects across a range of government, private sector, and industry clients in the infrastructure, oil and gas, mining and property sectors in Australia and PNG. Brigid has a Bachelor of Engineering (Environmental) (Honours) and a Bachelor of Science (Environmental) from the University of Melbourne.

Cheryl Thomson

Job Titles:
  • Project Management Lead

Erin Pears

Job Titles:
  • Member of the Management Team
  • General Manager of Victoria, Tasmania and South Australia
Erin is General Manager Victoria, Tasmania and South Australia and is responsible for the business strategy, commercial performance and building […]

Evan McDowell

Job Titles:
  • Structural Engineer
  • Structure Engineer

Ignacio Ortega

Job Titles:
  • Principal Engineer

Kathryn Jones

Job Titles:
  • Geotechnical Lead
  • Geotechnical Operations Manager for VIC / TAS / SA

Laura Smith

Job Titles:
  • Associate

Mike Norman

Job Titles:
  • Geotech Operations Manager

Paul Epps

Job Titles:
  • Project Management Lead in NSW
  • Project Management Lead in QLD

Stewart Phillis

Job Titles:
  • Member of the Management Team
  • General Manager of Tetra Tech Proteus
  • Registered Engineer
Stewart is General Manager of Tetra Tech Proteus, and is responsible for the management, coordination, and commercial performance of the engineering business.

Tom Hartnett

Job Titles:
  • Project Director

Wayne McFerran

Job Titles:
  • Member of the Management Team
  • General Manager of Western Australia and Northern Territory
Wayne is General Manager of Western Australia and Northern Territory and is responsible for all aspects of business performance across geotechnical and tailings engineering, environmental services, and workplace health and safety. Wayne joined Tetra Tech Coffey in 2009 and supports the execution of projects across the key sectors of oil and gas, mining, infrastructure, property, and government. Wayne has a Bachelor of Science (Honours) from the University of KwaZulu-Natal in South Africa, completed the Graduate program at Melbourne Business School, and is a Graduate of the Australian Institute of Company Directors.