Our People

Grant Aitken

Grant is our Managing Director and leads BTW with passion and pride. His experience in the industry and business is key, and his knowledge in managing high performing teams, project management, financial planning and governance is paramount to BTW’s success. Having joined BTW in 2003, Grant became a company Director in 2008 and Managing Director in 2016.

A Taranaki local through and through, and a family and community man, Grant enjoys the great outdoors and is a keen surfer, snowboarder and gardener.

Grant’s door is always open, and he would be happy to talk to you about how BTW can make your project a success.

Graeme Johnston

Graeme is a BTW Company Director, supporting the Survey and Energy Teams. His principal focus is on up-stream Energy clients, overseeing works related to wellsite construction and pipeline installation, with attention to quality management, ensuring survey accuracy and compliance with central and local government regulations. He has a key understanding of the flexibility and responsiveness required to deliver projects within the Energy sector.

Graeme joined BTW as an Engineering Surveyor in 2007 and completed an extramural MBA in 2010. He became Manager of the Energy Team in 2011 and a Director of BTW in 2013.

Born and bred in Otago, New Zealand, Graeme worked in the Middle East, Europe and South East Asia before coming to Taranaki in 2007 with his English wife and their two Hong Kong-born sons. When not in the office he has a lifestyle block in Kaitake, Oakura to keep under control, or can be found hiking the trails up and around Mount Taranaki.

Cam Twigley

Cam has been a practising environmental planner for 19 years and is an accredited Independent Hearings Commissioner. He is confident and skilled at project managing the consenting phase of major projects, advising on policy planning matters and assisting his clients with ongoing environmental responsibilities. Cam aims to make projects happen for his clients while achieving sustainable outcomes.

Passionate about giving back to the community, Cam is a volunteer on the Board of the Taranaki Chamber of Commerce, Te Kura Waenga o Ngāmotu Central School Board of Trustees and the Taranaki Branch of the Resource Management Law Association.

In his spare time, he loves fishing and surfing and socialising with family and friends.

Give Cam a call for the best possible planning and environmental advice.

Ian Steele

BTW’s Director of Engineering, Ian Steele is a practicing Principal (CPEng) Civil Engineer. He leads our civil and structural engineering teams with a focus on providing fit-for-purpose designs – whether the job be large or small.

Ian has been in engineering management most of his career and has a strong emphasis on ensuring the team is well prepared and trained, meaning that your project gets the right expertise, first time. As an engineer, Ian’s strong experience is in land development and transport – including earthworks/geotechnical, stormwater, traffic/transport, roads and contract management.

Ian joined BTW in 2011 and became a BTW Director in 2013. Having grown up in Taranaki, he returned to the region after some time living further afield and has experience working on projects throughout New Zealand and Australia.

A keen fisherman, boatie and father of two — Ian is currently the President of the New Plymouth Sportfishing and Underwater Club, and Vice President of the New Zealand Sportfishing Council.

Ian is always ready for a discussion on how to make your project a success, even if that means thinking laterally about how it can be achieved.

Mathew Dickey

Mathew is a Civil and Structural Chartered Engineer and BTW’s youngest Director. He has been part of the BTW team since a young age, starting as a high-school labourer before progressing into a full-time engineer after completing his Engineering Studies at the University of Auckland.

Mathew is based in the New Plymouth office and has a passion for the water industry, specialising in Three Waters civil design and modelling. 

Outside of work, Mathew is a keen equestrian enthusiast and enjoys the mountain and sea.

Phil Dickey

As a founding member of the company, Phil brings 35 years of invaluable experience as a Registered Professional Surveyor to BTW. Educated at Otago University, Phil’s particular responsibility is to support our energy industry clients and manage the company’s larger projects. Phil’s expertise and experience includes projects in Australia and Malaysia as well as New Zealand involving seismic surveys and the associated logistic support, well site development, and pipeline projects. Phil can also offer strategic advice around land access, and community and iwi liaison.

Roy Weaver

Having a Civil and Structural Engineering background, Roy is experienced in managing large projects for government and private owners in NZ and offshore.  He holds an MBA with Distinction, enjoys mentoring the next generation of young leaders and finding wins in those sticky situations that arise in business from time to time.

Roy joined BTW in 2015 after 19 years as a port CEO and various associated board roles. His focus is on business planning and development, including BTW’s establishment of a Waikato office in Hamilton.

Originally from the Wairarapa, he has fond memories of first competing with the Taranaki U14 representative football side in New Plymouth. Roy and his partner Annette enjoy cycle touring, hiking and activities with their seven grandchildren on three different continents.

Roy is a Chartered Director and brings both his governance and leadership experience to BTW. He enjoys working with the fast-paced and innovative group at BTW — a group that makes it happen for clients. 

Trudy Brewer

Trudy is our Finance & Administration Manager, a.k.a. ‘The Sheriff’. Trudy’s knowledge of everything BTW is paramount to the day-to-day running of the BTW ship.  Trudy is a company stalwart who joined BTW in 1996 as the administration assistant, but over time her job morphed into higher level work with on-the-job training and development.

Taranaki born and bred, Trudy loves to spend spare time with family and friends, and to travel overseas.

Trudy will always greet clients with a happy face or voice at the end of the phone, and is always willing to go the extra mile for clients and the BTW team.

Jason Cargo

Jason is our Hamilton Branch Manager and leads the Hamilton team with enthusiasm and drive. His experience and relationships in the Waikato property industry are key to helping BTW clients navigate the delivery of land and infrastructure projects.

Jason came to BTW in 2018 from a background in surveying consultancy, LINZ and council leadership roles, entering his Waikato Regional Manager role with a team of Land Development professionals. He is a Waikato lad from a sporting family that continues to be heavily involved in the Waikato community. Jason loves tennis, travelling and spending time with family and friends.

Jason and our Hamilton team celebrated success at the ‘We are Waikato Property People Awards 2019’, receiving the Best Team award for their involvement with the Otorohanga Medical Centre.

Trevor Masters

Trevor is our IT Manager and leads our software development at BTW.

He has broad computing experience including spatial data systems, databases and software engineering, which enables him to see the bigger picture when developing solutions.

He has worked for BTW several different times in as many roles, starting out as a survey labourer in 1981 before becoming a software engineer, developing and supporting offshore navigation and data acquisition solutions.

Born and raised in New Plymouth, Trevor enjoys kitesurfing, brewing beer and running.

Bronwyn Muir

Bronwyn is our HSQ Manager and every day she enthusiastically endorses the health, safety and quality systems together with the BTW team in their work.

Born and bred in Taranaki, Bronwyn started with BTW in January 2019. Her hands-on experience in business ownership, systems development, and appraising workplace activity alongside regulation and industry standards adds continued value to BTW workplace culture.

Originally a shepherd by trade and now co-owner of two dairy farms in the region, the NZ agricultural industry is the pivot around which Bronwyn and her family function. Farming, family, gardening and discovering new spots of NZ country make her life tick. 

Ensuring that quality, health, safety and wellbeing is always foremost in the minds of all the BTW workers as they go about their work is a role taken seriously by Bronwyn.

Very importantly, she strives to provide a high integrity HSQ system that enhances and supports the exceptional service that BTW Company offer all clients and associated stakeholders.

Keith Preston

Keith is our Survey Manager and leads BTW’s Geospatial and Cadastral team with passion and commitment.

Keith has experience in a broad range of surveying services, including close liaison with developers, architects, engineers, construction contractors, service authorities and government agencies to ensure reliable and accurate transfer of survey information. As a Survey Manager, Keith acts as the principal point of contact for multiple clients, providing a wide range of advice while working on a variety of projects.

Having grown up in Taranaki, Keith joined BTW in 2015 as a Licensed Cadastral Surveyor. He enjoys being active in multisport events and appreciating the great outdoors with family and friends.

Keith embraces technology by keeping up to date with the latest surveying equipment to ensure all projects are carried out accurately and efficiently.

Kathryn Barrett

Kathryn joined BTW in 2001 and became a Licensed Cadastral Surveyor in 2005. Kathryn specialises in legal boundary surveys (subdivisions, easements, and road legalisation) and management of land development projects.  Kathryn uses technology and works closely with developers, architects, engineers, construction contractors, service authorities and government agencies to ensure projects are carried out accurately and efficiently.

Sean Husband

Sean is a Chartered Professional Engineer with over 10 years’ experience in land development. Sean specialises in the design of civil infrastructure and stormwater management systems, and has a strong background in project management, contract administration and construction monitoring.

Taryn Martin

Taryn is a Licensed Cadastral Surveyor/ Survey Team Leader for our Hamilton office.

Taryn works with all internal and external stakeholders to deliver a land development or subdivision project on time and on budget.  Technology aids this process and is embraced on these projects to give clear and concise deliverables in an efficient and accurate manner. Taryn has experience in a broad range of surveying services, including close liaison with developers, architects, engineers, construction contractors, service authorities and government agencies to ensure reliable transfer of survey information.

Aaron Edwards

Dave Bolger

Dave is BTW’s Environment Manager and heads a team of scientists with focus and integrity. His experience is nationwide, and his knowledge on environmental issues and regulations provides clients and regulators with confidence and trust.

Dave has specialist skills in land contamination and has managed large-scale environmental projects. He joined BTW at the start of 2013 as a scientist and in 2018, Dave became the Team Leader of the Environment Team, before moving into his current position as Manager of the Environment team in June 2019.

Born in Taranaki with a real passion for the natural environment and adventure, Dave is often off on adventures with his family. These include the likes of rock climbing, mountaineering, surfing and trail walking.

Dave always provides time to listen, and then offers solutions and options to guide decision making for your project.

Remalia Wallis

Remalia, based in Hamilton, is the Team Leader for the Waikato Environment Team. She works closely with Dave Bolger and the New Plymouth team of scientists, as well as the engineering teams to provide a collaborative environment within BTW. 

Remalia has 15 years’ experience as an environmental consultant and project manager in New Zealand and Australia, with a focus on water resources. Her multi-disciplinary experience spans water supply and wastewater disposal for private and council clients, construction dewatering, landfills, quarries and mines, contaminated land, and the energy industry.

Outside of work, Remalia can be found on her bike riding one of the many trails in the Waikato, stopping at new cafes along the way.

Greg Larkin

Wasi Shirwali