Company lists · Data refreshed September 2026

Top 25 Engineering consultancy firms based in Ireland

Name: Engineering consultancy firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 515 companies tracked

RevenueBase identified 515 engineering consultancy firms headquartered in Ireland as of September 2026 and tracks 24,108 professional contacts across them, including 9,280 with verified work emails and 1,099 with mobile numbers. Dublin is the largest hub.

This list covers engineering consultancy firms headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

515Companies

24,108Contacts tracked

9,280Verified emails

1,099Mobile numbers

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The 25 largest engineering consultancy firms based in Ireland

Ranked by team size

Top 25 of 515 engineering consultancy firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consultancy firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Mercury	Indirect evidence	Dublin, IrelandHQ checked Sep 27, 2026	1,001-5,000	2,418 contacts →
	Indirect evidence “Mercury is the European leader in construction solutions.” Source: RevenueBase Database · checked Sep 27, 2026
2	Jones Engineering	Partial evidence	Dublin 4, IrelandHQ checked Sep 27, 2026	1,001-5,000	2,415 contacts →
	Partial evidence “Jones Engineering is a multi-disciplined engineering contracting company, offering the complete range of engineering and building services installations.” Source: RevenueBase Database · checked Sep 27, 2026
3	Dornan	Partial evidence	Cork, IrelandHQ checked Sep 27, 2026	501-1,000	1,257 contacts →
	Partial evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 27, 2026
4	Designer Group	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	1,001-5,000	911 contacts →
	Partial evidence “Designer Group is a leading Irish-owned engineering contractor delivering projects across Energy & Industrial, Data Centres and Building Services.” Source: RevenueBase Database · checked Sep 27, 2026
5	Ward And Burke	Partial evidence	Kilcolgan, IrelandHQ checked Sep 27, 2026	1,001-5,000	632 contacts →
	Partial evidence “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Source: RevenueBase Database · checked Sep 27, 2026
6	KTL	Partial evidence	Naas, IrelandHQ checked Sep 27, 2026	501-1,000	429 contacts →
	Partial evidence “For over 27 years, KTL has been a leading provider of fast, effective, and reliable engineering services across the professional services, telecommunications, and power sectors.” Source: RevenueBase Database · checked Sep 27, 2026
7	Coffey	Partial evidence	Athenry, IrelandHQ checked Sep 27, 2026	201-500	324 contacts →
	Partial evidence “Coffey is a family-owned civil engineering-led company operating in every major construction sector throughout Ireland and the UK.” Source: RevenueBase Database · checked Sep 27, 2026
8	Nicholas O'dwyer LTD	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	201-500	284 contacts →
	Partial evidence “Nicholas O'Dwyer Ltd, Consulting Engineers, provide water engineering, environmental engineering and civil and structural engineering services to public and private sector clients.” Source: RevenueBase Database · checked Sep 27, 2026
9	ORS	Indirect evidence	Dublin, IrelandHQ checked Sep 27, 2026	51-200	270 contacts →
	Indirect evidence “Since 1991, ORS has led the way in anticipating and responding to diverse client requirements in the construction industry.” Source: RevenueBase Database · checked Sep 27, 2026
10	Pmce Consultants	Partial evidence	Dublin 6w, IrelandHQ checked Sep 27, 2026	n/a	261 contacts →
	Partial evidence “PMCE is a Consulting Engineering practice offering services to private and public clients in the areas of Road Safety Engineering (inclduding Road Safety Audits and Road Safety…” Source: RevenueBase Database · checked Sep 27, 2026
11	O'connor Sutton Cronin	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	201-500	241 contacts →
	Partial evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 27, 2026
12	Roughan & O'donovan	Strong evidence	Sandyford, IrelandHQ checked Sep 27, 2026	201-500	227 contacts →
	Strong evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Sep 27, 2026
13	MKO	Partial evidence	Galway, IrelandHQ checked Sep 27, 2026	201-500	210 contacts →
	Partial evidence “MKO is Ireland’s largest Planning and Environmental consultancy.” Source: RevenueBase Database · checked Sep 27, 2026
14	Roadbridge LTD	Partial evidence	Limerick, IrelandHQ checked Sep 27, 2026	n/a	199 contacts →
	Partial evidence “Founded in 1967, and operating in Ireland, United Kingdom, and the Middle East, Roadbridge is a leader in Civil Engineering.” Source: RevenueBase Database · checked Sep 27, 2026
15	Dbfl Consulting Engineers LTD	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	51-200	178 contacts →
	Partial evidence “DBFL is a fully Irish-owned firm specializing in the planning, engineering design and delivery within the property, infrastructure, environmental & energy sectors.” Source: RevenueBase Database · checked Sep 27, 2026
16	Fingleton White	Partial evidence	Portlaoise, IrelandHQ checked Sep 27, 2026	201-500	175 contacts →
	Partial evidence “Fingleton White is a leading provider of multidisciplinary engineering services, delivering innovative solutions to utility owners and large energy users across the Energy, Water…” Source: RevenueBase Database · checked Sep 27, 2026
17	Tritech Engineering	Partial evidence	Dublin 22, IrelandHQ checked Sep 27, 2026	201-500	173 contacts →
	Partial evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 27, 2026
18	KSN	Partial evidence	Dublin 4, IrelandHQ checked Sep 27, 2026	51-200	165 contacts →
	Partial evidence “KSN is an independent Irish owned construction consultancy founded over 35 years ago.” Source: RevenueBase Database · checked Sep 27, 2026
19	MWP	Partial evidence	Blackrock, IrelandHQ checked Sep 27, 2026	51-200	160 contacts →
	Partial evidence “MWP is a multi-disciplinary Engineering and Environmental Consulting Practice providing a first class service to its clients since it was founded in 1967.” Source: RevenueBase Database · checked Sep 27, 2026
20	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Sep 27, 2026	501-1,000	143 contacts →
	Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 27, 2026
21	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 27, 2026	201-500	136 contacts →
	Partial evidence “Delivering Successful Engineering and Technical Services Secto Services is a fast growing Infrastructure build and engineering solutions company where customer service and the…” Source: RevenueBase Database · checked Sep 27, 2026
22	Gavin & Doherty Geosolutions GDG	Partial evidence	Dublin 14, IrelandHQ checked Sep 27, 2026	51-200	122 contacts →
	Partial evidence “At Gavin & Doherty Geosolutions (GDG), we are experts at finding innovative engineering solutions to support some of the most challenging offshore wind, marine and infrastructure…” Source: RevenueBase Database · checked Sep 27, 2026
23	EDC	Strong evidence	Cork, IrelandHQ checked Sep 27, 2026	51-200	121 contacts →
	Strong evidence “EDC - Engineering Design Consultants is a global engineering consultancy with an extensive project portfolio accumulated over the past 22 years.” Source: RevenueBase Database · checked Sep 27, 2026
24	Gdcl Consulting Engineers	Partial evidence	Dublin 12, IrelandHQ checked Sep 27, 2026	11-50	116 contacts →
	Partial evidence “From original inception in 1991, GDCL Consulting Engineers have evolved as a provider of civil and structural engineering services with a proven track record of successful…” Source: RevenueBase Database · checked Sep 27, 2026
25	Fehily Timoney And Company	Strong evidence	Cork, IrelandHQ checked Sep 27, 2026	51-200	116 contacts →
	Strong evidence “Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: engineering consultancy firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names engineering consultancy firms.
Partial evidence: Its own public description names part of engineering consultancy firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancy firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 515 engineering consultancy firms based in Ireland

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Engineering consultancy firms based in Ireland at a glance

As of Sep 27, 2026

38.5%Verified-email coverage

4.6%Mobile-number coverage

46.8Average contacts per company

11-50Median size (employees)

17.7%Largest-city concentration · Dublin

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

251

11-50

156

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 29.0d

5,5400–30

3,47131–60

23361–90

690–180

30180+

Company record updated

Median 81.0d

00–30

5,91931–60

7,68461–90

9,19290–180

1,313180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among engineering consultancy firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “engineering consultancy firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names engineering consultancy firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among engineering consultancy firms, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 9,280 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names engineering consultancy firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many engineering consultancy firms are there based in Ireland?

RevenueBase identified 515 engineering consultancy firms headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Mercury, headquartered in Blanchardstown, tops this list with the largest team on record.

Which city has the most engineering consultancy firms?

Dublin leads with 91 headquartered companies, followed by Cork (28) and Limerick (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,280 verified decision-maker contacts tracked across these 515 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.