Our People

Coherent design teams produce excellent outcomes. We all thrive on balancing technical rigour and engineering quality with a naturally collaborative, communicative, and transparent nature. This enables wider project teams – both clients and consultants – to understand the issue, make good decisions, and deliver successful projects.


 Joel Gustafsson

Joel has over 13 years’ experience of environmental design, energy strategy development and mechanical and electrical engineering. He is based in Cambridge and has worked across a range of sectors. Many of his projects have set important precedents that support reducing the environmental impact of the built environment.

Joel is a member of the Chartered Institute of Building Services Engineers and holds a PhD in Atmospheric Chemistry from the University of Cambridge. He uses his project experience to engage with and influence the wider industry. He is a member of the Cambridgeshire Quality Panel, a trustee of the Cambridge Forum for the Construction Industry and on the Policy Advisory Panel for the Heat Pump Federation.

He entered the environmental design and engineering industry to maximize the positive impact of his work. He is motivated by real world outcomes and thrives on working with clients to find and deliver the right solution for their project regardless of scale, budget, or sector.


Carl Brookes

Carl studied Mathematical Physics at the University of Nottingham, and followed up with an MSc in Energy, Environment & Buildings.
He has over 15 years’ engineering experience in a range of industries including defence, oil & gas, with 10 of these as a senior MEP Services and Environmental Engineer. Through applying himself in a range of technical fields, he has learned the importance of simple, well-resolved processes and strong, visual communication to facilitate collaboration with clients and stakeholders from a diverse range of disciplines and sectors.

Notable project experience includes electrical, mechanical, and environmental engineering for a new main kitchen & dining hall at Homerton College, Cambridge, the Urban Nature Project at the Natural History Museum, London and Central Hall, and a new centrepiece for the National Railway Museum in York. All these projects share a key aim to balance the architectural individuality and creativity expected of such high-profile projects with low-carbon approaches to fabric, environmental design and building service systems.

Carl is passionate about low-carbon and sustainable design and enjoys building the collaborative relationships required to deliver successful and remarkable buildings.


Non Geraint

Non studied Engineering at the University of Cambridge, specializing in Mechanical and Bioengineering.

They are passionate about low carbon and sustainable design, and they enjoy working on developing efficient and sustainable solutions to reduce the environmental impact of the built environment.

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Suzanne Goulder

Suzanne studied Mechanical Engineering at the University of Cambridge, specialising in Energy, Sustainability & the Environment. After graduating with a Masters degree she has built upon her knowledge in practice, through a range of technical fields including nuclear power engineering, building services, and environmental design.

Suzanne is experienced in a broad range of engineering systems designs, with a particular interest in low carbon strategy and systems. Her previous work covers university and college buildings, housing, public amenities, schools, and strategic energy master planning. She also previously initiated and led a Sustainability Strategy team for a nuclear power engineering company.

Suzanne enjoys working on developing environmentally, economically, and socially sustainable solutions for projects. She is highly motivated by environmental design and strives to reduce the environmental impact of the built environment, through her work on projects.

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Ben Leary

Ben studied Architectural and Civil Engineering at the University of Bath, graduating with a Masters Degree (MEng) also gaining certification as Passivhaus Designer.

He built upon his degree in practice and is a senior engineer specialising in the integration of complex engineering into signature buildings. Although his focus is on complex electrical design he has experience of the broader aspects of M&E engineering, environmental design, low energy buildings and energy strategies.

His notable projects include The University of Cambridge Civil Engineering Building, The University of Cambridge Whittle Laboratory and The University of Portsmouth Sports Centre – which became the first BREEAM Outstanding Sports Centre in the UK.

He employs a practical and pragmatic approach to building design and will focus on delivering efficient solutions.

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Dan O’Neill

Dan holds a Masters Degree in Engineering from the University of Cambridge. His business and engineering experience spans the defence, aerospace, automotive, technology and construction sectors.
Dan understands business growth strategy and has been involved with several small business that successfully moved from start-up to commercial growth. He is experienced in implementing robust and scalable systems that improve efficiency and quality control as well as improving commercial performance.

He has worked in the built environment sector for the last 10 years, managing business operations. He also has a thorough understanding of construction which helps significantly in understanding the project related elements of the business

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Joe Shirley

Joe studied Mechanical Engineering at the University of Bath, graduating with a Masters Degree (MEng).

Joe is an experienced mechanical and electrical engineer, having previously worked at AECOM and Max Fordham. His experience spans multiple sectors including healthcare, student accommodation, multi-residential and high-end residential accommodation, historic retrofit and higher education facilities.

Joe enjoys working on technically challenging projects and embraces the collaboration needed to achieve a balanced solution which respects the often-competing requirements of building appearance, cost, and low carbon design.


Rupert Varley

Rupert studied Mechanical Engineering at the University of Cambridge, specialising in Energy, Sustainability and the Environment and Aerospace and Aerothermal Engineering.

Rupert achieved a distinction in his master’s project titled ‘Energy and Emissions in School Buildings’ which applied a novel emissions benchmarking tool, developed with his supervisor, to a Cambridge Foundation of Schools. In doing so, he gained experience using dynamic modelling software to investigate effective, low-cost emissions mitigation strategies for the school.

Rupert has quickly gained valuable experience as a graduate engineer at JGC, working on projects with St John’s College and Darwin College Cambridge as part of the university’s wider decarbonisation scheme.

JG Consulting

12c King's Parade, Cambridge CB2 1SJ
+44 01223 641797