Ambition to Innovate Engineering Firm of the Year 2025 Great Place to Work Certified 2025

Built Environment

Complex M&E design, engineered to perform

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Data Centres

Mission-critical engineering, designed for low energy & resilience

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Decarbonisation Strategy & Design

Supporting the transition to zero-carbon energy and infrastructure

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Building Physics

Applying physics to optimise building comfort, energy, and performance

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Energy & Infrastructure

Engineering complex energy networks through advanced modelling

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Engineering Excellence Starts with People

what we do

A leading International Engineering & Sustainability Consultancy, delivering innovative solutions for global clients

Built Environment

Intelligent mechanical and electrical engineering solutions
Energy & Infrastructure

Decarbonisation solutions delivering measurable carbon reduction across the building lifecycle
Building Physics

IN2 Engineering applies advanced building physics and environmental modelling to predict, analyse, and optimise indoor environments
Sustainability

Sustainable building solutions that improve performance, and future-proof the built environment
Building Information Modelling (BIM)

IN2's digital coordination brings clarity and confidence to building delivery
Aftercare

Extending the life of existing buildings through audit, evaluation and analysis-led retrofit

We operate from offices across Ireland, the UK and Europe

Dublin

Unit E&F Mountpleasant Business Centre, Mountpleasant Ave Upper, Ranelagh, Dublin D06 P5N8
London

5 St John's Lane London EC1M 4BH
Berlin

Stresemannstraße 123 Berlin BE, 10963
Madrid

19, Calle del Guadiana, Madrid, Spain
Athlone

Unit 11 Inish Carraig Business Centre Athlone N37 PN82
Belfast

2nd Floor, 5-23 Hill Street Belfast BT1 2LA

We bring expertise across many sectors to create building solutions that work for people in every space.

+

employees working toward creating innovative, sustainable, and people-centred engineering solutions
building projects completed to date since IN2 Engineering's launch in 2002
k

residential units in design and delivery
k

m² innovative and sustainable office space design
hotel room keys delivered to date
%

average project carbon reduction by 2030

One Cowcaddens

Glasgow, Scotland

yteGMIT Centre for the Creative Arts and Media

Galway, Ireland

Ardee Ambulance Base

Ardee, County Louth

Hoxton Hotel

Dublin, Ireland

Victoria Pharmaceutical

Royal Victoria Hospital, Belfast, Northern Ireland

Finnieston

Glasgow, Scotland

Theatre 13, Beaumont Hospital

Beaumont, Dublin, Ireland

Royal Academy of Arts

London, England

Dublin Airport HBS Upgrade

Dublin, Ireland

Belfast City Hospital Energy Centre and Site De-steam

Belfast, Northern Ireland

Commercial

Education

Healthcare

Venue

Life Sciences

Residential

Electrical & Utilities

Conservation

Data Centres

Aviation & Defence

Energy and Infrastructure

One North Dock Level 5 Fit-Out

Dublin, Ireland

BREEAM / LEED / WELL M&E Design

Lots Road

London, UK

M&E Design Sustainability

BNY Mellon Bank Data Centre

Dublin, Ireland

Dynamic Thermal Modelling M&E Design

QUB Elms Village Energy Centre & District Heating

Belfast, UK

Dynamic Thermal Modelling NZEB

Eliott Dynes Residential Unit & Day Hospital

Belfast, UK

M&E Design Sustainability

Premier Inn Berlin Süd & Ku'damm

Berlin, Germany

M&E Design

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Trusted by Industry Leaders

I joined IN2 as a graduate in 2019, and over the years I’ve had the opportunity to grow into a management role. That journey has been supported every step of the way, with encouragement to take on new challenges and develop at a pace that felt right for me.

Lucy-Marnée Henning

Bid Manager