Our People


Administration Manager


Alison brings 14 years of administrative and managerial experience to Tetrad.

Alison completed a Diploma in Business Management in 2006 with a focus on Accounting.


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In 2007, She then went on to study a Diploma in Teaching by distance whilst also working as a Head teacher in a busy Montessori Preschool. In 2009, Alison was promoted to Centre Manager and was responsible for the overall daily running of the large preschool as well as all the administration. During this time, she completed many different leadership courses to aid her in managing a teaching team of 14 staff.

In 2015, Alison stepped back from her teaching roll and focused mainly on the administration part of the centre. In 2018, left the preschool to focus on raising her small children.

She was very excited to have the opportunity to join Tetrad as Administration Manager and to adapt her knowledge to the engineering industry.

Andrew Pugh

Director – Structural Drafting / BIM



Andrew is a Senior Technician with over 15 years’ experience in BIM, structural draughting, site construction monitoring and technical development. 

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His high attention to detail, skills, and knowledge of structural construction methods and civil design ensures information is portrayed efficiently and accurately.

He has a thorough understanding of the latest BIM methods and standards used nationally and has displayed these skills on a number of high-end projects. 

In his leadership roles, Andrew has displayed a wide range of skill sets. He works efficiently and effectively to achieve the highest standard of documentation while always considering the client’s best interests to achieve the best outcome possible. Andrews strong communication skills both internally within Tetrad consulting and externally ensure projects progress smoothly without delay while maintaining healthy working relationships. 

Andrew’s wide range of construction monitoring experience, on both structural and civil commercial projects, has allowed him to have valued input on constructability and cost from the early stages of projects he has been involved with. He works extensively with all disciplines throughout the design to achieve the best possible outcome.

Working with his peers at Tetrad consulting, Andrew has more recently been involved with projects involving leading seismic technology.

His strong technical ability and experience have allowed him to portray these new systems with a high level of documentation, while also passing these skills and experience to the other members of his team.


  • Entertainment Exchange – 3 story Entertainment Complex $50m (2016)
  • Project BIM Manager, Project Coordination, Lead technician
  • Verve Property Precinct Partnership – 11 story apartment complex $30m
  • (2015/2016) BIM Lead, Lead Technician, Project Coordination
  • Skellerup – 18000m² factory $20m (2015) BIM lead. Lead technician.
  • 106 Wrights Road – 3 story Office Building $15m (2012) -Lead Technician, Site Construction Monitoring
  • 196 Barbadoes Street – 2 story Office Building $5m (2013) – Lead Technician, Structural and Civil, Site Construction Monitoring, Contract Management –
  • 299 Durham Street – 4 story Office Building $10m (2013) Lead Technician, Project Coordination

Jeremy Tozer

Director – Fabrication / BIM



Jeremy brings 15 years of steel fabrication and 14 years of engineering consultancy experience to Tetrad Consulting. His construction industry career started out by fabricating fences and handrails with Eastcoast Steelwork in 1991, before transitioning to structural steel fabrication where he attended to site measure-up of all structural steel work and converting this to completed fabrication and site installation.

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Whilst continuing with his steel fabrication career, Jeremy pursued his interest in computers and qualified as a qualified computer technician by attaining a Comp-TIA A+ Computer Technicians Certificate and a Network+ Certificate. Jeremy’s computer training created a career shift from full time steel fabricator to working in the private engineering consultancy with Powell Fenwick Consultants from 2005 to 2007 as an in-house computer IT specialist and Cadet Structural Draughtsperson.
Jeremy’s combined experience a computer specialist and structural draughting provided him the opportunity to join a new structural consultancy in 2008 at Kirk Roberts Consulting. Jeremy’s knowledge of computer systems and server structures was of great value to Kirk Roberts Ltd as the company grew from a regional to national based consultancy.
Jeremy started with KR as a structural draftsperson and after 10 years became an associate at the company and was influential in promoting shop fabrication detailing services by introducing Kirk Roberts Ltd to Tekla Structures Software.
Jeremy’s naturally extroverted nature and focus on client delivery has enabled him to develop enduring working relationships over the years with established contractors, which has allowed him keep abreast of the changing construction scene and improvement on client delivery.
Jeremy’s attention to fabrication detailing combined with an understanding of on-site construction is recognised by contractors who appreciate his understanding of site-specific construction issues whilst improving on construction detailing.


Steven Roberts

Principle Geotechnical Engineer



Steven is our Geotechnical Expert, and – with 28 years of engineering consultancy experience behind him and having been a 50% founder-shareholder in a previous, successful Christchurch engineering consultancy – he’s our guide and rock!  Respected deeply throughout Christchurch and the South Island as one of the best in his field, Tetrad is the richer for his wealth of wise counsel.

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His key areas of specialty lie in both shallow and deep foundation design, involving pile and ground-improvement techniques, for either residential or commercial projects.

Qualifying at the University of Canterbury in 1992 with a Bachelors’ degree in Civil Engineering, he began his engineering career with a small consultancy in Wellington, practising (at that time) as a structural engineer.  5 years overseas – in the Netherlands and the United Kingdom – added to his professional development, in internationally recognised engineering consultancies.

Returning to New Zealand in 2003, Steven initially continued as a structural design engineer – first for a medium-size Christchurch consultancy firm; and then, three years later, he co-founded Kirk Roberts Ltd.  At the same time decided to pursue his love of geotechnical engineering, qualifying in 2009, just one year before the 2010 Christchurch earthquake sequence changed the landscape of the city, permanently.

Whilst many were gripped with uncertainty in the aftermath, Steven focused instead on building a small, skilled and focused geotechnical team at Kirk Roberts, ensuring invaluable reassurance and expertise were easily available for both insurance companies and private property owners, during this cycle of unprecedented change.  His previous 12 years as a structural design engineer became critical in understanding the technical interface between structural and geotechnical design during the post-EQ reconstruction – and formed the bedrock of the strategy for Tetrad, bringing a multi-disciplinary team together under one roof, with a ‘zero-silo’ policy and a culture of collaboration.

Steven’s particular gift is in understanding and identifying both structural and geotechnical risk – and how that combined risk can be mitigated and averted by premium engineering designs.  Adding astute commercial and business-ownership experience to this professional skill-set, enables him to find design solutions for you as a Tetrad client, that are not simply ‘fit for purpose’, but cost-reducing.

For down-time, social football, walking, and taming his garden all play a part, as well as going through punishing routines designed by his personal gym trainer!  Overseas travel is a real love . . . but of course, Covid has curbed that for now!  Looking forward to the future!



Director and Principle Structural Engineer



Coming Soon!


Let’s Build Something

71 Peterborough Street
Christchurch Central City, Christchurch 8013

[email protected]

Phone number 03 365 0726
Monday to Friday 8 am to 5 pm

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Our People – Tetrad Engineering Services