Meet our team of industry experts and advisors situated across New Zealand

Auckland

Lance Jimmieson

Lance Jimmieson

Managing Director

Tammy Donaldson

Tammy Donaldson

National Operations Manager

Henk Le Roux

Henk Le Roux

General Manager

Lance Jimmieson
Managing Director

Relevant qualifications: EMANZ Accredited trainer, NABERSNZ Accredited Assessor, Certified Measurement & Verification Professional, Icehouse Graduate, M. ASHRAE (American Society of Heating, Refrigeration & Air Conditioning Engineers), M. IRHACE (NZ Institute of Refrigeration, Heating & Air Conditioning Engineers), M. Facility Managers Association, M. Association of Energy Engineers, M. NZ Green Building Council.

Lance is a specialist Building Services engineer with over 40 years’ industry experience in a wide range of building services applications. His day to day work has a bigger goal, to improve the performance of existing buildings while up-skilling the industry to help change the conversation. His passion is to create greater awareness of the positive benefits of engineering better building environments.

An advocate of ground-breaking change in the creation and management of healthier more sustainable buildings, Lance’s speciality is Innovative Engineering, Building Management Systems, Continuous Commissioning and plant failure diagnostics.

As one of the first in NZ to qualify as a NABERSNZ Accredited Assessor and Certified Measurement and Verification Professional, and also a course developer and trainer for Building Services courses, Lance’s breadth of experience is available to make positive change real, by improving the health and long term sustainability of buildings and peoples’ everyday work life.

Tammy Donaldson
National Operations Manager

Relevant qualifications: HND (Higher National Diploma) Building Services Engineering, Icehouse graduate.

Tammy is a specialist HVAC project and Contracts Manager with a background in building services engineering and a total of 21years’ industry experience. Spending five years as a Senior Facilities Manager for Colliers International Ltd and Progressive Enterprises Ltd gave Tammy invaluable insights into what it’s like working on the other side – as a result, she comprehends what FMs really require from their HVAC partner, and delivers accordingly. This intrinsic understanding is a big part of why Jacksons was named FMANZ Supplier of the Year in 2020.

Tammy’s success in project delivery comes from her focus on methodology. She’s big on pre-planning, developing critical paths, forming the right team for the job, and communicating with all stakeholders every step of the way. As a result, she’s known for her aptitude in delivering complicated building upgrades with minimal disruption to tenants.

Tammy has a vast knowledge of New Zealand requirements including the NZ Building Code, NZ Conditions of Contract Standards, Resource Management, and Health & Safety regulations and laws.

Henk Le Roux
General Manager

Relevant qualifications: Bachelor of Engineering (Mechanical), Pr. Eng. (ECSA – Engineering Council of South Africa).

Henk is a specialist building services engineer with over 25 years’ experience. He came to NZ from South Africa, where he’d built a strong track record in engineering and management as part of the leadership team in a successful engineering firm with over 100 employees.

Henk is passionate about facilitating incredible service delivery with our clients and loves to see a project through from inception to completion. He spends his days working alongside new and existing clients, working on relationship and contract management, solving complex problems, and generating financial models to determine the feasibility of projects.

Henk’s strength lies in leading teams of multidisciplinary professionals on projects, from planning to completion, and ensuring they have all the tools, resources and training they need to deliver an exceptional building services experience to our clients.

Henk combines big-picture thinking with an eye for detail, using his skillset of engineering and project management to make sure our team is continually delivering the quality level of service we are renowned for.

Jonathon Haines

Jonathon Haines

Senior Engineer + Lead Engineer Auckland

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David Fothergill

David Fothergill

Senior Engineer

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Dean Fann

Dean Fann

Senior Engineer

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Jonathon Haines
Senior Engineer + Lead Engineer Auckland

Relevant qualifications: Bachelor in Mechanical Engineering (1st Class Honours), chartered engineer (CEng) with CIBSE.

Jonathon is a senior building services engineer who is skilled in mechanical HVAC, in particular systems design, commissioning and project management. Jonathon is particularly adept at designing upgrades for Building Management Systems to control HVAC plant, a specialist area he has specific insight into with his prior experience as a control systems engineer.

In both the UK and NZ, Jonathon has worked on a range of projects across commercial, healthcare, defence, airport, industrial, residential and retail sectors. Jonathon’s extensive experience working as both a design engineer and a site-based engineer – together with his control systems background – provides a broad base of knowledge to apply to HVAC projects and specifically towards improving the built environment.

David Fothergill
Senior Engineer

Relevant qualifications: Bachelor of Engineering (Mechanical, Hons).

David has been in the HVAC industry as a mechanical engineer since 2008 and brings diverse experience to his role, from managing commercial projects to involvement in the service and maintenance side of the industry. At Jacksons his responsibilities include HVAC system surveying, HVAC system design, contract management, and construction monitoring.

During his career, David has worked on a range of buildings and applications including commercial office buildings, apartments, schools and education centres, libraries, council buildings, hospitals, prisons, and some specialist applications. His superpower lies in resolving issues within existing buildings, those tricky problems many other engineers won’t touch.

His eye for detail and excellent track record has seen David undertaking HVAC design and construction supervision for Restaurant Brands for the past few years. This involves both new stores and refurbishment of their existing stores for KFC, Pizza Hut, Carl’s Jnr and Taco Bell around the country – no small task, especially when it comes to live installs.

Dean Fann
Senior Engineer

Relevant qualifications: Bachelor of Engineering (Mechanical, Hons), MEngNZ, Greenstar New Zealand Accredited Professional (GSNZAP).

Dean is a mechanical engineer who specialises in designing heating, ventilation and air conditioning (HVAC) systems that work – and work well.

Dean uses his range of technical knowledge of building services systems to provide innovative and practical HVAC and hydraulics solutions for Jackson’s clients, including system surveying and construction monitoring.

He has a wealth of experience across a number of sectors including commercial, corrections and defence, with specialist knowledge in design for healthcare facilities, including operating theatres and medical gas systems. Dean also has experience in project management through his work with Auckland Transport.

John Barker

John Barker

Senior Engineer

Christoff van der Linde

Christoff van der Linde

Mechanical Engineer – Hydraulics

Travis Browne

Travis Browne

Revit MEP Draughtsperson / BIM Manager

John Barker
Senior Engineer

Relevant qualifications: New Zealand Certificate in Engineering (HVAC), Master of Science in Building Services Engineering.

John has extensive experience in the HVAC industry having worked in it for 22 years. He started out doing HVAC contracting and commissioning before moving on to consulting roles; along the way he’s had plenty of engineering experience in commercial and industrial sectors, as well as healthcare, aged care, residential and education. He uses this breadth of expert knowledge to solve complex problems for our clients. He’s renowned for solving unusual engineering challenges, particularly the curly ones around existing building services systems. He’s also good at ESD – energy sustainability design.

Christoff van der Linde
Mechanical Engineer – Hydraulics

BEng (Mechanical), ASPE Certified in Plumbing Design (CPD)

With over seven years in the industry Christoff started in water management performing site investigations and audits, assessing water consumption through data logging, and evaluating and implementing water saving strategies.

Having made a transition Christoff brings valuable knowledge in the design of building hydraulic and fire protection services. He has worked across many sectors including residential, hospitality, healthcare, retail, commercial, and education.

At Jacksons Christoff is actively engaged in collation of hydraulic services budgets, tender documentation, and performing construction monitoring.  He is also a Member of Engineering New Zealand (MEngNZ), and an Associate Member of the American Society of Plumbing Engineers (ASPE).

Travis Browne
Revit MEP Draughtsperson / BIM Manager

Relevant qualifications: Postgraduate Diploma in Building Information Modelling and Digital Built Environments; Autodesk Certified Professional: Revit MEP; Autodesk Certified Professional: AutoCAD MEP.

Travis is responsible for leading Jackson’s in-house BIM-related digital technology where he assists our engineers by designing constructable solutions, as well as producing high-quality BIM models for our clients. Through producing constructable building information models (BIM), we are able to mitigate risk in projects by providing the right information at an early stage – a tremendous value-add for our clients.

Travis brings on-the-ground knowledge to his role: he started out working for an HVAC contractor as an installation assistant supervisor 13 years ago, before retraining as a BIM specialist. He’s since worked in many sectors, including residential, commercial, healthcare and education.

Ivy Jimmieson

Ivy Jimmieson

Office Manager

Kyle Calder

Kyle Calder

Commercial Lead

Ivy Jimmieson
Office Manager

Relevant qualifications: Bachelor of Commerce (Trade & Industry).

Ivy is responsible for the day-to-day running of head office and branch administration duties for the company. With a focus on accounts payable / receivable, payroll, expenses and general office duties, Ivy is across all of the crucial office functions, allowing the engineering staff to concentrate on their areas of expertise.

Kyle Calder
Commercial Lead

Relevant qualifications: BE(Hons.) Mech, CMEngNZ, CPEng, IntPE(NZ) / APEC Engineer, Greenstar New Zealand Accredited Professional (GSNZAP)

Kyle is a problem solver with a solid understanding of building services, specialising in mechanical services, and commissioning. At Jacksons he uses his knowledge of practical construction, mechanical engineering, and project delivery to help our customers. He enjoys meeting new people, tailoring engineering services solutions to meet their needs, and then overseeing project delivery.

Kyle has been in the construction industry for over 11 years, spending 9.5 of that as a building services consultant. Starting his career on-site means he’s got a good handle on practical and construction site building services knowledge, which then developed with his mechanical services design experience.

He has over 5 years of leading projects across a range of sectors including commercial, education, retail, residential, aged care, industrial and corrections, covering both new builds and existing buildings. Some of his more prominent gigs as a mechanical engineer include refurbishment of heritage building Australis Nathan, innovative new build Commercial Bay, Ormiston Junior College, and DFS Custom House retail refurbishment.

Waikato

Kevin O’Connor

Kevin O’Connor

Commercial Lead

Mark Fleming

Mark Fleming

Senior Engineer

Kevin O’Connor
Commercial Lead

Relevant qualifications: NZCE Mechanical, MIRHACE New Zealand.

Kevin has over 30 years of design and contract observation and specialises in HVAC and hydraulic design. Kevin enjoys working side-by-side with our clients, using his reassuring expertise to help them through the entire process, from brief and design stage through to install. He’s brilliant at using his design and technical experience to help clients better understand and resolve their particular system problem – he’s grown a reputation of being able to solve the problems others can’t!

Kevin has worked in a variety of sectors including retail, commercial, education, healthcare and institutional, and on projects such as performing arts centres, police and custodial installations, hospitals, airport terminals, and commercial glasshouses. He’s also been involved in investigating performance of existing buildings and systems and in producing CAD drawings and specifications.

Mark Fleming
Senior Engineer

Relevant qualifications: BSc Mechanical Engineering, Chartered Engineer (C Eng.), Member of Chartered Institute of Building Services Engineers, Associate Member of Institute of Mechanical Engineers, Fellow of the Institute of Healthcare, Engineering and Estates Management.

Mark is an experienced mechanical and hydraulic engineer who has over 39 years of experience across all building services sectors including institutional (Corrections, MOJ), commercial, public, healthcare and education. As well as extensive knowledge in these areas, Mark has also successfully managed and delivered many plant replacement projects and was responsible for the mechanical and electrical (M&E) upgrading works in 20+ UK hospitals.

Mark uses his expertise to help Jacksons clients with technical design advice, reports, technical reviews and project management.

Tauranga

Lajos Nemedi

Lajos Nemedi

Senior Engineer

Brian Jackson

Brian Jackson

Company Founder / Senior Adviser

Lajos Nemedi
Senior Engineer

Relevant qualifications: Chartered Professional Engineer CPEng, Bachelor of Engineering (Mechanical), MSc in Building Services Engineering, Chartered Member of Engineering NZ.

Lajos is a specialist mechanical and hydraulic building services engineer with over 20 years’ experience that spans across commercial, educational, healthcare, museums, correction facilities, defence, swimming pools, industrial buildings and laboratories.

He takes pride in designing mechanical and hydraulic building services that are fit for purpose, providing accurate and quality documentation and an eye for detail that results in the best solution for his clients.

Brian Jackson
Company Founder /
Senior Adviser

Relevant qualifications: BE Hons Mech, Chartered Professional Engineer, M. ASHRAE (American Society of Heating, Refrigeration & Air Conditioning Engineers), Life Member IRHACE (NZ Institute of Refrigeration, Heating & Air Conditioning Engineers).

Brian setup Jackson Engineering Advisors in 1995 to make a positive difference to the Building Services industry, providing specialist skills to complex commercial and industrial projects, particularly around identifying and fixing problems with existing systems.

With over 40 years’ experience as a consulting engineer and contractor, across a wide range of mechanical services projects including hospitals, commercial buildings and industrial sites, Brian is now tasked with providing technical support for team members when required. He also works on complex industrial projects, drawing on his superior industry knowledge. Recent projects have included detailed engineering design and commissioning of air conditioning systems for a new hospital at Whakatane, project engineering for a major cold-storage complex in Auckland, pharmaceuticals drying applications and helping to develop an innovative system to dry kiwifruit before labelling.

Brian sold his share of the business to Lance Jimmieson in 2010 and moved to a lifestyle block outside Tauranga but still maintains a keen interest in the company today.

Hawkes Bay

Riaan Steyn

Riaan Steyn

Engineering Manager

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Bill Bristow

Bill Bristow

Senior Electrical Engineer

Kevin Welsby

Kevin Welsby

Commercial Lead

Kevin Welsby
Commercial Lead

Relevant qualifications: Higher National Certificate in Electrical Engineering and in HVAC; I.Eng

Kevin brings a wealth of knowledge with over 40 years’ experience in building services having worked in New Zealand, Europe, and the United Kingdom in consulting and contracting roles.

Passionate about providing clients with cost effective, fit for purpose, environmental and energy responsible solutions Kevin works directly with project managers, multi-discipline design teams, and sector specialists.

Kevin’s diverse background includes building services design, energy usage assessment, preventative maintenance, and remedial works management across industry sectors such as commercial and retail, data centres, industrial manufacturing, and food processing facilities; public and private health; local and central government facilities.

Kevin is an Associate member of CIBSE IEng.

Riann Steyn
Engineering Manager

Relevant qualifications: Bachelor of Engineering (Mechanical).

Riaan is a hydraulic/mechanical engineer with over 22 years’ consulting experience in Namibia and New Zealand.

He has been involved in a wide range of hydraulics and HVAC engineering projects including retail, health, education, commercial and industrial buildings. He also has extensive experience in water reticulation, bulk water transfer and swimming pool filtration and considerable experience in natural gas and LPG installations.

Riaan has also worked in the airport environment where he developed valuable skills in project and resource management.

Bill Bristow
Senior Electrical Engineer

Relevant qualifications: NZCE (Electrical), Registered Electrical Engineer, Registered Electrician.

Bill has over 20 years of building services consultancy experience as an Electrical Designer/ Design Engineer, preceded by 20 years working in various sectors in the electrical trade.

Bill has been involved in a wide range of building services work in NZ, including commercial, retail, health, tertiary, education, Green Star, warehouse and industrial buildings, with many landmark projects in his portfolio.

Bill has also been involved in the coordination of all services in the building envelope: security, audio visual, data, electrical, nurse call, fire, hydraulics, and HVAC.

Marc Wessels

Marc Wessels

CAD Manager

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Eddie Bruwer

Eddie Bruwer

CAD & Revit Design Draughtsperson

Marc Wessels
CAD Manager

Relevant qualifications: Intec Drafting Diploma.

Marc has over 40 years’ experience in design drafting of HVAC, fire protection, electrical, security and BMS systems. At Jacksons, Marc manages the drawing office which produces computer-aided 2D and 3D documentation on CAD systems. He can create electronic plant room layouts, first and second fix layouts, vertical distribution drawings, schematics, as well as shop drawings for external HVAC contractors.

Fun fact: Marc designed HVACPAC – an HVAC-specific CAD plug-in for AutoCAD and BricsCAD that he sells world-wide.

Eddie Bruwer
CAD & Revit Design Draughtsperson

CAD Level 4 CETA (Construction Education & Training Authority), and Autodesk Certified Professional in AutoCAD and Revit Architecture.

Eddie’s drawing career began in the Naval industry drawing piping and electrical schematics for diamond mining ships.  It was during this time he realised that draughting would play a key role in his future and decided to pursue studies in the CAD industry.

After immigrating to New Zealand in 2016, Eddie started out working at a Building Services Engineering firm as a multi-disciplinary technician focusing on the Mechanical Ventilation (HVAC), Hydraulic and Electrical disciplines. Since then, he has worked on multiple projects across residential, commercial, healthcare, defence, and education sectors.

Eddie is proficient in AutoCAD, Revit, Visualisation (rendering) software, and is acquainted with drone mapping and LiDAR Scanning.

Eddie joined our formidable drawing team bringing his broad-based experience to assist in the production of constructable building information models (BIM) and collaborating with industry professionals to further enhance project outcomes. 

Dunedin

Paul Clough

Paul Clough

Commercial Lead

Howard Healey

Howard Healey

Senior Engineer

Tom Mulder

Tom Mulder

Senior Engineer

Paul Clough
Commercial Lead

Relevant qualifications: Member of NZ’s Institute of Refrigeration, Heating & Air Conditioning Engineers, an EECA Insulation Lead Trainer Auditor and certified Ministry of Education Project Manager, FMANZ member.

With over 40 years’ experience in project management and contracting, Paul has worked on most of the significant buildings in and around the south including the Dunedin and Southland Hospitals, Otago University, Otago Boys High School and a large number of school and commercial projects. Paul uses his extensive HVAC expertise to help clients with design, problem solving, and building surveys. He’s had considerable experience in designing quality heating systems, boiler upgrades and conversions to alternate fuels.

Over the years, Paul has worked with a number of larger mechanical services contracting companies and has strong asset management and costing experience. He holds the position of Chairperson for the IRHACE southern branch.

Howard Healey
Senior Engineer

Relevant qualifications: A past president and life member of IRHACE (NZ Institute of Refrigeration, Heating & Air Conditioning Engineers), Otago/Southland branch committee member of IRHACE, M. ASHRAE (American Society of Heating, Refrigeration & Air Conditioning Engineers) and BOINZ (Building Officials Institute of NZ), NZCE (HVAC), FMANZ member.

Howard has over 45 years’ experience in the mechanical services industry and applies his wealth of experience and significant knowledge of practical design and construction to successfully deliver projects for clients, from inception to completion. His specialties include innovative engineering, building management systems, and plant failure diagnostics.

Howard has worked on a wide range of projects of all sizes in all industries, including Toitū Otago Settlers Museum redevelopment, Dunedin Public Art Gallery alterations, Dunedin Town Hall redevelopment, University of Otago Trace Element Centre, Dunedin Botanic Garden Propagation Facility and Manapouri Power Station Ventilation Upgrade.

In 2018 he was awarded the prestigious James McAlpine Award for “Making a valuable contribution towards the betterment of the refrigeration & air-conditioning industry”, a bi-annual award.

Tom Mulder
Senior Engineer

Relevant qualifications: NZCE (HVAC), 10yrs IRHACE.

Tom has extensive experience in designing HVAC and hydraulics systems for numerous Dunedin sites and projects in the lower South Island, including the Dunedin Council Chambers & Town Hall and many in the University of Otago campus. He also has extensive experience in BMS and controls systems design, having worked as a senior controls system design engineer for almost ten years.

He brings a broad knowledge of not only HVAC, hydraulics and building services controls, but also incredible knowledge on the local building stock, having worked in the region most of his working life.

Gavin MacDonald

Gavin MacDonald

Senior Engineer

Gavin MacDonald
Senior Engineer

Relevant qualifications: BEng Mechanical (Canterbury), Member of Engineering NZ, AIRAH.

Gavin is a mechanical engineer who specialises in designing heating, ventilation, and air conditioning (HVAC) systems. Following years of experience working in mechanical engineering in Australia, Gavin worked in Christchurch for five years before joining our Dunedin team in 2021.

He has experience across several sectors, including housing, offices, schools, supermarkets, and hospitals – he was recently involved in refurbishment work on the ICU and Gastro departments at Dunedin Hospital, as well as their new Audio Labs. Gavin’s able to work on projects at all stages, from design and tender and construction documentation through to construction, including site inspections and reports. He also has experience in defects inspection reports for various existing HVAC systems, providing recommendations and budget estimates for clients.
Gavin prides himself on using his experience to discover exactly what it is the client really needs and then designing the simplest solution to that problem, reducing future maintenance costs along the way.