about us

Nutbrook Group is an engineering company.
We specialise in commercial buildings and critical environments, like data centres, trading floors and hospital theatres. We sharpen the way they operate, overhaul the way they look and find and fix their flaws.

That’s why building owners, property managers and commercial tenants trust us to provide a range of engineering advice, design and project management services.


We maintain the balance between meeting the technical engineering requirements that keep the lights on, and people safe, and supporting our clients’ business ambitions; two perspectives that don’t always share the same goal.


Why the name, Nutbrook?


The inspiration for Nutbrook’s moniker comes from a sturdy 74ft steel vessel known on England’s extensive canal network as Nutbrook 67. While contemplating the kind of values his engineering business would stand for when he created it in 2011, founder and Managing Director Neil Shepherd took a lot of inspiration from his parents’ canal boat.


It was custom designed, and its build overseen, by Neil’s father, Paul; a stickler for detailed design, thorough preparation and quality workmanship. Today, Nutbrook Group embodies all those qualities that have given the Good Ship Lollypop, as Neil calls it, its strength and endurance – all the things you need in a long-term business partner.


Since launching the company, Neil has built a team of experienced engineers, who are well regarded in the industry and passionate about what they do. Together, they provide a range of services to both large and small companies, including engineering advice, design services, audits and project engineering.

our people

neil shepherd

founder & managing director

Neil is always a first draft for any backyard cricket team. Because he’s the guy that gets things done – the dog with the bone; the finder of that needle in the haystack. He’s determined, focused and committed to getting the best result for his team.


He takes the same approach to supporting his clients by bringing strategic focus and creative ideas to every engineering challenge he takes on. He’s a firm believer that the only way to get clients the results they need is to work together as a team and it’s this collaborative approach that’s seen him become highly respected among peers in the building services industry.


He started his engineering career working on Sea King helicopters as an aircraft engineer with the Royal Navy, gaining a first class honours in mechanical engineering from Portsmouth University at the same time. From there, Neil relocated to Australia where he joined Multiplex as a facility manager looking after iconic sites, including the Queen Victoria Building and The Strand retail centres in Sydney’s CBD. Before deciding to create his own company, Neil supported AT&T managing their Asia Pacific data centre real estate as head of engineering.


Nutbrook’s clients call on Neil for support managing a range of complex projects, including:


  • Risk identification and treatment strategies
  • Data centre design, EH&S policy advice and auditing (compliance, contractual, site management)
  • Capital planning and equipment conditioning
  • Preventative maintenance planning
  • Account transition management, including cost reduction strategies


Neil is an active member of the Institute of Mechanical Engineers (ImechE) and Facility Management Australia (FMA).

zoia geller

director – building services

With more than 25 years’ experience in building services design and construction experience, Zoia has worked on a wide range of sectors including technology /mission critical, commercial, retail, and education sectors and  is dedicated to delivering well researched, conscientious and innovative engineering advice and solutions.


Throughout her career, Zoia has been involved in a number of prestigious and complex building projects which includes upgrading Australia Post Strawberry Hills from 2 to 5 Stars NABERS and the University of Sydney’s 5star Green Star Abercrombie Precinct. Zoia was also involved in the refurbishment of Sydney’s iconic heritage building QVB.


In addition, Zoia is an experience engineer for mission critical projects of various sizes and complexity such as AirTrunk Huntingwood and Derrimut which has recently won AIRAH’s Excellence for Innovation Award (2018).

Ashley Marriott

director – building services, Victoria and Tasmania

Having passion for the work you do is an enviable quality that’s instantly recognisable in Ashley Marriott, Nutbrook’s Director of Building Services for Victoria and Tasmania. Motivated to make a positive and important contribution to the community, Ashley has overseen some of Victoria’s largest health infrastructure initiatives.


With more than 15 years’ experience in mechanical and sustainability design, Ashley is highly regarded in the building services industry for his ability to deliver projects of varying scope and scale across a range of sectors, including mission critical, education, retail and industrial.

Tian Rabe

director – building services

The most successful projects benefit from exceptional attention to detail and Tian’s is unparalleled. Nothing gets past him. Exactly what you’d expect from someone with more than 15 years’ experience working in project and facilities management for many major companies in Australia, the United Kingdom and South Africa.


A hallmark of Tian’s experience managing capital works, tenancy fit outs and design reviews is his ability to meet the exacting requirements of both designers, architects, consultants and the client. He’s the consummate intermediary who works tirelessly to make sure everyone gets what they need without compromising the result. 

ron philip zachariah

director – building services

There are few people more passionate about sustainability in the building services industry than Ron. After more than 15 years managing building maintenance projects, Ron became all too familiar with the heavy footprint they can leave on the environment and it motivated him to seek out ways to help clients tread more lightly.


Ron has achieved a wide range of sustainability accreditation, including NABERS, CBD and Green Star, to make sure he’s highly qualified and informed to guide clients toward more energy efficient and sustainable business practices.


Ron’s commitment to improving the efficiency of buildings extends beyond sustainability, with his reputation in the industry for being a safe pair of hands to direct capital planning, asset management, auditing, due diligence and much more.  

our difference

There are few buildings in Sydney, Melbourne, Hobart and Perth we can’t tell you something about in terms of upgrades, fit outs, sustainability and NABERS ratings or data centre resilience. If we didn’t help improve the way a building operates, we’ll almost certainly know it’s history, and we’ll definitely have an opinion on how it could be improved.


We make it our business to know what’s happening in our industry.


One of our greatest strengths is that we’ve experienced both sides of the industry – everyone has been the client and the consultant at different points in their careers. This means we can anticipate each project’s needs from all angles and make sure all stakeholders are involved when they need to be.


It also means we can objectively assess our clients’ systems and processes to expose operational and technical risks that pose a threat to their business, or people, before creating the policies, plans and procedures to either eradicate those risks or manage them responsibly.


At Nutbrook Engineering Group we believe we have the experts and experience to provide you with solutions for energy advisory services and energy efficiency projects. We have a wide range of services expertise aimed at reducing and optimising electricity, gas and water usage, saving our clients’ money on their utility bills and helping them become more corporately responsible, environmentally and economically sustainable. At Nutbrook we offer end-to-end solution through our wide range of services from energy assessments (NABERS, Green Star, NatHERS, BASIX), energy audits, design, and energy efficiency, and renewable energy projects.


Nutbrook Group’s unique market proposition and continued growth means we’re always looking for driven and talented engineering professionals to join our team.


If you’ve got a technical background in building services engineering and want to work with a business that believes there’s a better way, then contact us for a confidential discussion.