Meet our extensive team of industry professionals

Patrick Harris
Managing Director
BE Civil CPEng CMEngNZ IntPE(NZ)

As a founding Director of Engineering Design Consultants, Patrick is currently responsible for overall company management, business strategy, and overseeing senior managers.

A Chartered Professional Engineer with more than 30 years’ experience, Patrick has worked extensively on large to small-scale civil, marine, and high rise structural engineering projects in New Zealand, the Pacific, South America, and the United Kingdom.

His experience includes civil engineering on local authority projects and significant land developments, as well as extensive structural design and construction supervision. His track record includes fire engineering analysis, design and report preparation for domestic, commercial, educational and medical construction projects. In addition to his role at EDC, Patrick acts as an expert witness for Resource Consent hearings and Environment Court hearings.

In his spare time, Patrick runs a small farm specialising in emus.

Gareth Williams
Geo/Environmental Director
BSc (Hons) Mining Geology P.Grad. Dip. Management Studies MSc (Eng) Foundation Engineering CPEng IntPE(NZ) CMEngNZ MAusIMM

Gareth joined EDC in 2003 as senior geotechnical engineer with responsibility for meeting clients for both geotechnical and geo-environmental investigations including sampling, control of field staff, design of fieldwork, slope stability analyses, effluent (domestic wastewater) on-site disposal design, plus factual and interpretive reporting including foundation and retaining wall design recommendations. Gareth has specialist skills in interpreting the results of contaminated land investigations. He also acts as an expert witness at Council and geo-environmental issues.  Gareth was also part of the team that went to Christchurch in 2010 following the September 2010 earthquake to help with the recovery.  He has been involved in many projects since that time in Canterbury and across the South Island.

In late 2018, Gareth moved to the Bay of Plenty to help develop EDC’s growing office in Whakatane.

Before joining EDC, Gareth worked extensively on the geotechnical aspects of residential, commercial and industrial development projects from Northland to Wellington. He has been involved in geotechnical and contaminated land investigations on a vast range of development projects in the United Kingdom, Russia and Singapore. His environmental investigations included testing for explosives, hydrocarbons and heavy metals for a variety of end uses from residential to commercial.

Away from the office, Gareth and his wife run a small farm with cattle, horses, chickens, goats and a pet sheep.  He has two children.

Jonathan Mumford
Civil Manager, Director
N.DIP Civil (ZA) Btech Civil (ZA) MEngNZ

Jonathan is originally from South Africa, where he did an internship working on a variety of civil and structural projects while completing his civil engineering degree. He has worked in New Zealand since 2002, and joined EDC in 2006.

Jonathan has both civil and structural contracting experience and has worked on projects for residential subdivisions, pipeline installations, road construction and upgrades, and a sanitary sewer treatment plant for a town of 10,000 people.

His areas of civil expertise include roading, pipelines, pump stations, retaining walls, stormwater modelling and stormwater treatment. His structural capabilities cover residential dwellings including masonry and timber retaining walls, beams, pipeline bridging, bracing, and bridge design.

In his free time, he heads to the coast looking for the perfect conditions for himself – and his surf board.

Ian Hendy
Senior Civil/Geo Engineer, Board Advisor
BE Civil (Hons) CPEng MIPENZ, NZGS

Ian joined EDC in 1995, bringing broad experience in geotechnical and civil fields to the company. He has developed considerable expertise in all aspects of land development including bulk earthworks, retaining structures, slope stability assessments, building foundations, environmental controls, roads, stormwater, wastewater and water supply infrastructure.

He is highly experienced in providing detailed investigation, design and reporting services on land development projects from the initial concept, right through to construction supervision and the certification stage. Ian has a particular specialisation in design and computer modelling for stormwater- related projects, including flood plain assessments, stream-works, and the design of ponds and reticulation to the required technical and environmental standards, often working for local councils. He also acts at hearings as an expert witness.

When he has the time, Ian has the perfect escape from work – he heads to the skies as a part time glider pilot.

Sam Polson
Structural Manager, Director
BE(Hons) CPEng MIStructE CMEngNZ

After a period working in Wellington and Singapore, Sam spent five years in the Middle East working on a range of high-profile projects in the UAE and Saudi Arabia. However Sam realised that he missed the green grass of home and the projects that New Zealand offers, so at the end of 2011 Sam returned to his old University town to assist with the rebuild. His areas of expertise are the design of concrete and steel commercial buildings, residential design, seismic strengthening and acting as an expert witness. Sam is an advocate for strengthening and upgrading of existing buildings. He believes in collaboration with building owners and stakeholders to develop solutions that are cost effective, easy to build and meet the project brief.

Giles Learman
Geo/Environmental Team Leader, Associate
BSc (Hons) CGeol FGS

Giles joined EDC in March 2012 and was previously a Director in a UK based multi-disciplinary engineering consultancy, with responsibility for geotechnical and contaminated land engineering, along with company health and safety. Now in the much drier climate of Canterbury Giles enjoys leading and developing the geotechnical team in Christchurch whilst also helping build upon EDC’s environmental capabilities.
Giles is skilled in; foundation assessment, design and interpretation of geotechnical and contaminated land investigations, slope stability analysis, retaining wall design, project management, cost benefit analysis and negotiation with regulators

Raymond Wu
Senior Structural Engineer, Senior Associate
MEngSt (Civil) BE Civil BISC Dip Civil Eng (China) CPEng CMEngNZ IntPE (NZ)

Raymond joined the EDC team in 2005 as a highly-qualified structural engineer with extensive experience in large-scale projects in China and a bachelor degree in civil engineering of University of Auckland. In 2007, he completed his master’s degree in Engineering Studies in University of Auckland after combining his EDC role with part-time study for two years.

Raymond has extensive technology skills, particularly in the use of SAP2000/Microstran, 2D and 3D structural analysis software used in the design of a wide variety of steel and concrete framed structures.  Raymond has been involved in IEP and DEE Assessments to a nationwide range projects.  This has included physical assessment of buildings and completion of IEP and DEE calculations and seismic strengthening design assessments.

In recent years Raymond has been working as a Senior Structural Engineer, including on large community housing development projects.

Graeme Beattie
Structural Team Leader
BE Civil (Hons), CPEng, MEngNZ

Graeme joined EDC in 2019 as the Structural Team Leader –  BoP, and Structural Technical Advisor.  Graeme previously worked for BRANZ as the Principal Structural Engineer over a period of 23 years, undertaking research and deriving solutions for structural engineering problems in NZ’s commercial sector, particularly in the area’s of light timber framing and non-structural components.   He enjoys putting the wealth of knowledge gained in that role into practice as a consulting engineer with EDC.

Graeme was a member of the MBIE Engineering Advisory Group immediately following the Canterbury earthquakes, taking a lead role in the development of the MBIE Guidelines for repairing and rebuilding houses affected by the Canterbury earthquakes.

Graeme has previously enjoyed participating in the management of the Structural Engineering Society (Sesoc) and the NZ Society for Earthquake Engineering (NZSEE), having served as President of the NZSEE from 2008 to 2010.  He has also served on a number of Standards NZ, joint AS/NZS and international standards committees.

Tony de Bruyn
Fire Engineer
BE(Civil) CPEng

Tony has been practicing fire engineering since 2006, achieving CPEng status in 2015. Tony has built a wealth of experience, having used specific design and acceptable solutions to provide the fire safety solutions for a range of projects, including hotels, stadiums, educational campuses, aged care facilities, apartments and malls.

Tony has a passion for using his skills in specific fire design and passive fire protection, on new and existing buildings, to ensure that fire stopping is done right, first time. This includes fire modelling, using existing and new technologies in designs, robust design review, fire safety documentation, thorough inspections during construction, planning effectively and engaging people skills to bring about successful implementation. Tony’s eye for detail is particularly useful in ensuring concealed issues are investigated and then the best practical solutions explored to ensure building compliance is achieved on time and on budget.

Tony Dong
Structural Team Leader
BE(Hons), CPEng CMEngNZ

Tony joined EDC in 2014.  After a successful chartership, demonstration of solving complex engineering challenges and leadership skills, Tony became the Structural Team Leader for the Christchurch office in 2019.

Tony has led the design for many new build projects including complex residential homes, retaining walls and commercial buildings. During his work in Christchurch he has also undertaken many earthquake related projects and gained extensive experience in the forensic assessment of structures, providing the design and repairs and strengthening of existing homes and non-residential buildings.

He has a wide range of experiences and likes solving engineering challenges for our clients.  Tony’s excellent technical aptitude has also provided valuable design input and project management delivery for a number of Importance Level 4 electrical transmission structures/buildings.

Delane Traber
Geotechnical Team Leader
BEngTech Civil, GIPENZ

Delane originally joined EDC in early 2012, and played a key role in the Christchurch office as a Geotechnical/Geoenvironmental Engineer over the course of nearly 8 years. He has advanced his geotechnical assessment knowledge and is skilled in cost identifying effective foundation and ground treatment options for a range of development scenarios. He has experience with geotechnical issues across the country, having worked on a number of Importance Level 4 structures in remote areas of New Zealand. He is also well versed in the preparation of Preliminary Site Investigation Reports (PSI’s) and Detailed Site Investigation Reports (SIR’s), in accordance with the NES requirements, for potentially contaminated sites, and validation of remedial works.

Jordan Bliss
Structural Engineer/Fire Design Technical Lead
BE (Civil) Hons

Jordan has been with EDC since 2014, starting as an intern while studying, then becoming full-time in 2016.

As a Structural Engineer and Fire Designer, Jordan has worked across a large range of projects in the residential and commercial sectors, including design of new residential houses and apartment buildings, alterations and recladding of existing buildings, seismic assessments, and construction monitoring. He particularly enjoys projects where he can provide both structural and fire services, to ensure the designs for each discipline complement one another.

As Fire Design Technical Lead, Jordan understands how small details have the potential to derail a building design, and works with the fire team to offer a detail-oriented service with early engagement to avoid belated budget implications and structural design changes. His understanding of Passive Fire Protection, construction details and Consent processes helps avoid common pitfalls.

Jordan is a keen musician and songwriter, and plays in a band with his old schoolmates.

Sarah Maetzig
Structural Engineer/Fire Design Manager
BE(Civil) Hons

Sarah joined EDC as an intern in 2014 before coming onboard as full time team member in 2015 as a Structural and Fire Engineer.  She has experience in both the fire safety and structural design of buildings for a wide range of projects including: residential developments, educational and community buildings, aged care, office space and shop fitouts.  Sarah’s dual skills in Fire and Structural Engineering provide valuable assistance throughout each design stage from concept through to detailed design as well as providing onsite advice during construction.

 Sarah is currently working towards her Masters degree in Engineering Studies (Fire Engineering) part time through the University of Canterbury.