What IN2 DESIGN ENGINEERING LIMITED does

IN2 Design Engineering Limited (trading as IN2 Engineering) is a privately held building services engineering and sustainability consultancy founded in 2002 by Barry Flynn and headquartered in Dublin, Ireland. The firm delivers mechanical and electrical (M&E) design, building physics analysis (including daylight/sunlight assessment per EN 17037 and BRE 209, thermal modelling, and computational fluid dynamics), sustainability and decarbonisation consulting, Building Information Modelling (BIM) coordination, and aftercare/retrofit services across ten sector verticals: Data Centres, Energy & Infrastructure, Healthcare, Commercial, Education, Residential, Aviation & Defence, Life Sciences, Conservation, and Venues.

The firm's technical stack is centred on advanced building physics simulation using established engineering tools — Radiance, AftabRad, Tas, and Revit — and is explicitly differentiated by its depth in CFD and dynamic simulation modelling, which the company describes as rare within the Irish engineering landscape. IN2 Academy provides structured 12-week internship and graduate training that has run for over 15 years, and the firm has held CPD Accredited Employer status from Engineers Ireland continuously since 2007 (renewed through 2027).

IN2 operates a project-based professional services model with multi-year contracts and per-project fees, serving enterprise clients including Dublin Airport, Goldman Sachs, Google, WeWork, Zoom, Marriott, and the Royal Academy of Arts. Revenue is generated through tendered and relationship-driven engagements delivered from six offices — Dublin, London, Belfast, Athlone, Berlin and Madrid — covering Ireland, the UK, and continental Europe. The firm has completed nearly 2,000 construction projects since founding, was named Engineering Firm of the Year 2025 at the Engineering Excellence Awards in Dublin, and is Great Place To Work certified for 2024-2025 and 2025-2026.

Name

IN2 DESIGN ENGINEERING LIMITED

Legal name

IN2 Design Partnership Ltd.

Website

https://in2engineering.com

Company type

Private

Founded year

2002

Operating status

Operating

Short description

IN2 Engineering is a privately held Dublin-headquartered building services engineering and sustainability consultancy delivering M&E design, building physics, BIM, and decarbonisation services to enterprise clients across data centres, healthcare, commercial, residential, and infrastructure sectors from six offices in Ireland, the UK, Germany, and Spain.

Ownership category

akta.pro rank

Product category

Building Services Engineering Consulting

NAICS

Engineering Services (541330), Engineering Services (54133), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Systems Engineering & Technical Program Management (BPAHAIAI)

Keywords

• MEP engineering design
• Building services engineering
• Building physics consulting
• Sustainability consulting
• BIM coordination

Headquarters

HQ city

Belfast

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering Consultancy Services: Professional engineering consultancy services including M&E design, building physics analysis, sustainability consulting, and BIM services for construction and infrastructure projects. Revenue generated through project-based fees on consulting engagements.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

IN2 Design Engineering Limited provides mechanical and electrical (M&E) engineering design, building services engineering, building physics, and sustainability consulting for the built environment. The firm delivers complex M&E design, advanced building physics simulation (CFD, daylight/sunlight analysis), Building Information Modelling (BIM) digital coordination, decarbonisation and energy infrastructure engineering, and aftercare/retrofit services. These are delivered across sector specialisations including data centres, healthcare, commercial, education, residential, aviation and defence, and conservation for enterprise clients across Ireland, the UK, and Europe.

Product overview

IN2 Engineering is a building services engineering and sustainability consultancy offering a portfolio of interconnected services. The core offering is M&E Design (Mechanical & Electrical Engineering), supported by specialist services in Building Physics (including daylight/sunlight analysis, thermal modelling, and CFD), Sustainability, BIM coordination, and Aftercare. These services are delivered across defined sector specialisations including Data Centres, Energy & Infrastructure, Healthcare, Commercial, Education, Residential, Conservation, and others. The company operates from offices in Dublin, London, Berlin, Madrid, Athlone, and Belfast, serving clients throughout Ireland, the UK, and Europe.

Differentiator

Problem solved

Functional benefit

Brands

• IN2 Academy: A 12-week program providing internship and graduate opportunities, offering training in technical and interpersonal skills for engineers, running for over 15 years.

Products and services

• M&E Design (Mechanical & Electrical Engineering) Intelligent mechanical and electrical engineering solutions for the built environment, delivering complex M&E design engineered to perform across residential, commercial, healthcare, and other building sectors for enterprise clients.
• Energy & Infrastructure Decarbonisation solutions delivering measurable carbon reduction across the building lifecycle, including complex energy network engineering through advanced modelling to support the transition to zero-carbon energy and infrastructure.
• Building Physics Advanced building physics and environmental modelling services applying physics to optimise building comfort, energy, and performance, including daylight/sunlight analysis, thermal modelling, and computational fluid dynamics (CFD) for enterprise construction projects.
• Sustainability Sustainable building solutions that improve performance and future-proof the built environment, supporting enterprise clients in achieving environmental targets and decarbonisation outcomes.
• Building Information Modelling (BIM) Digital coordination services that bring clarity and confidence to building delivery through advanced Building Information Modelling, integrating multi-disciplinary design data for enterprise construction and infrastructure projects.
• Aftercare Service extending the life of existing buildings through audit, evaluation, and analysis-led retrofit to improve performance and energy efficiency for building owners and operators.

Quantifiable outcome

• Average project carbon reduction target by 2030
• +1 more outcomes

Named customers8 records

Segments10 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• WSP: Global professional services consultancy with strong building services engineering and sustainability practices in the UK and Europe. Competes with IN2 for mid- and large-scale commercial, healthcare, and data centre projects.
• AECOM: Global engineering and infrastructure consultancy with a large building services design practice in the UK and Europe. Comparable in service portfolio (MEP, sustainability, decarbonisation) and a known prior employer of IN2's Belfast Director, Simon Sloan.
• Sweco: European engineering consultancy with strong presence in the Nordics, UK, Ireland, Germany, and the Netherlands. Overlaps with IN2 in M&E design, sustainability, and building physics across Northern Europe and Germany.
• Ramboll: Global engineering, architecture, and sustainability consultancy with building services practices across the UK, Ireland, Germany, and Spain. Comparable in service offering and European footprint, with strong sustainability positioning.
• Mott MacDonald: International engineering consultancy with a building services and sustainability practice serving the UK, Ireland, and continental Europe. Directly comparable services for commercial, healthcare, education, and infrastructure clients.
• AtkinsRéalis: Engineering services and project management firm with a building services practice in the UK, Ireland, and Europe. Competes with IN2 on commercial, transport, and infrastructure-related M&E design work.
• Arup: Global engineering consultancy with a major building services/MEP practice across Europe. Directly comparable in services offered (M&E, building physics, sustainability, BIM) but vastly larger in scale, headcount, and geographic reach.

Direct peers

• Cundall: Multi-disciplinary engineering consultancy with strong building services, sustainability, and BIM practices in the UK, Europe, and Asia-Pacific. Comparable in services and mid-market positioning, with similar multi-office model.
• Hoare Lea: UK-based building services engineering consultancy focused on M&E design, sustainability, and building physics. Highly comparable in service mix, project type, and client base (commercial, healthcare, residential, cultural) to IN2.
• Buro Happold: Engineering consultancy specialising in building services, building physics, and sustainability design with strong reputation in complex and high-performance buildings. Closest peer in terms of technical specialism, building physics depth, and sector mix.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/in2-engineering-design-partnership

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about IN2 DESIGN ENGINEERING LIMITED