Company lists · Data refreshed September 2026

Top 25 Railway infrastructure consulting firms based in Ireland

Name: Railway infrastructure consulting firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 103 companies tracked

RevenueBase identified 103 railway infrastructure consulting firms headquartered in Ireland as of September 2026 and tracks 3,035 professional contacts across them, including 1,428 with verified work emails. Dublin is the largest hub.

This list covers railway infrastructure consulting 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 29, 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 29, 2026 86% judged on-target in blind review

103Companies

3,035Contacts tracked

1,428Verified emails

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The 25 largest railway infrastructure consulting firms based in Ireland

Ranked by team size

Top 25 of 103 railway infrastructure consulting firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to railway infrastructure consulting 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	Nicholas O'dwyer LTD	Partial evidence	Dublin, IrelandHQ checked Sep 29, 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 29, 2026
2	Pmce Consultants	Partial evidence	Dublin 6w, IrelandHQ checked Sep 29, 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 29, 2026
3	O'connor Sutton Cronin	Partial evidence	Dublin, IrelandHQ checked Sep 29, 2026	201-500	241 contacts →
	Partial evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 29, 2026
4	Roughan & O'donovan	Indirect evidence	Sandyford, IrelandHQ checked Sep 29, 2026	201-500	227 contacts →
	Indirect evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Sep 29, 2026
5	Dbfl Consulting Engineers LTD	Partial evidence	Dublin, IrelandHQ checked Sep 29, 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 29, 2026
6	MWP	Partial evidence	Blackrock, IrelandHQ checked Sep 29, 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 29, 2026
7	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Sep 29, 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 29, 2026
8	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 29, 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 29, 2026
9	Punch Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 29, 2026	51-200	105 contacts →
	Partial evidence “PUNCH Consulting Engineers is the business name of Michael Punch and Partners Limited and is one of Ireland's leading + most experienced engineering consultancies.” Source: RevenueBase Database · checked Sep 29, 2026
10	Waterman Moylan Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 29, 2026	51-200	99 contacts →
	Partial evidence “Waterman Moylan is a leading engineering and environmental consultancy providing specialist services to our clients in the property, infrastructure and environment markets in…” Source: RevenueBase Database · checked Sep 29, 2026
11	Clifton Scannell Emerson Associates	Partial evidence	Dun Laoghaire, IrelandHQ checked Sep 29, 2026	51-200	92 contacts →
	Partial evidence “Clifton Scannell Emerson Associates Clifton Scannell Emerson Associates (CSEA) are an Irish firm of Civil and Structural Consulting Engineers, with over seventy years’ experience…” Source: RevenueBase Database · checked Sep 29, 2026
12	Barrett Mahony Consulting Engineers	Partial evidence	Dublin 2, IrelandHQ checked Sep 29, 2026	51-200	79 contacts →
	Partial evidence “Barrett Mahony Consulting Engineers is an established civil and structural engineering consultancy specialising in all aspects of civil and structural engineering and project…” Source: RevenueBase Database · checked Sep 29, 2026
13	CHM Group	Partial evidence	IrelandHQ checked Sep 29, 2026	51-200	53 contacts →
	Partial evidence “For over 20 years, we have been at the forefront of the Country’s largest transport and infrastructure projects, including the construction of the M50, Terminal 2 at Dublin…” Source: RevenueBase Database · checked Sep 29, 2026
14	Eireng Consulting Engineers LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 29, 2026	11-50	38 contacts →
	Partial evidence “EirEng Consulting Engineers is a firm of highly experienced and motivated Civil and Structural Design Engineers with offices in Ireland and the UK, dedicated to providing cutting…” Source: RevenueBase Database · checked Sep 29, 2026
15	PMS Pavement Management Services LTD	Indirect evidence	Athenry, IrelandHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
16	Allied Consultant Engineering	Indirect evidence	Dublin 14, IrelandHQ checked Sep 29, 2026	1-10	25 contacts →
	Indirect evidence “Allied Consultant Engineering provides specialist structural engineering services to clients in Ireland and overseas.” Source: RevenueBase Database · checked Sep 29, 2026
17	Clandillon Civil Consulting LTD	Indirect evidence	Newbridge, IrelandHQ checked Sep 29, 2026	11-50	24 contacts →
	Indirect evidence “is a civil engineering consultancy, which is dedicated to providing exceptional service to main Contractors in the execution of civil engineering projects.” Source: RevenueBase Database · checked Sep 29, 2026
18	Breffni Group	Indirect evidence	Co. Dublin, IrelandHQ checked Sep 29, 2026	51-200	24 contacts →
	Indirect evidence “Resources • Plant Hire / Operator Hire • Civil Engineering & Construction • Demolition • Excavation & Disposal • Rail Division • Recycling • Transport & Logistics” Source: RevenueBase Database · checked Sep 29, 2026
19	Downes Associates	Indirect evidence	Dublin 12, IrelandHQ checked Sep 29, 2026	11-50	20 contacts →
	Indirect evidence “Downes Associates is a Structural and Civil Engineering Consultancy specialising in the delivery of quality civil and structural design solutions.” Source: RevenueBase Database · checked Sep 29, 2026
20	Glas Civil Engineering LTD	Indirect evidence	Kilheffernan, IrelandHQ checked Sep 29, 2026	51-200	18 contacts →
	Indirect evidence “Introduction Glas Civil Engineering Ltd was founded in 2013 with the mission of delivering top-quality service to our clients.” Source: RevenueBase Database · checked Sep 29, 2026
21	OSL Butler Consulting Engineers	Indirect evidence	Cork, IrelandHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “We provide consultancy services to a broad span of clients, large and small, involving projects across all sectors of the construction industry.” Source: RevenueBase Database · checked Sep 29, 2026
22	DRA Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “DRA Consulting are Chartered Engineers who provide clients with design, detailing and supervision services in the field of civil & structural engineering.” Source: RevenueBase Database · checked Sep 29, 2026
23	Donnachadh O'brien & Associates	Indirect evidence	Naas, IrelandHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence “Donnachadh O’ Brien & Associates was founded by Donnachadh O’Brien, Registered Chartered Engineer, and has grown to be an established civil and structural engineering consultancy…” Source: RevenueBase Database · checked Sep 29, 2026
24	Mcardle Doyle	Indirect evidence	Dundalk, IrelandHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “Civil & Structural Engineering Consultancy” Source: RevenueBase Database · checked Sep 29, 2026
25	Horganlynch Consulting Engineers Hlce	Partial evidence	Cork City, IrelandHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “Horganlynch Consulting Engineers (HLCE) is one of Irelands' leading Civil & Structural Engineering Consultants.” Source: RevenueBase Database · checked Sep 29, 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: railway infrastructure consulting 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 railway infrastructure consulting firms.
Partial evidence: Its own public description names part of railway infrastructure consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name railway infrastructure consulting 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 103 railway infrastructure consulting firms based in Ireland

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Railway infrastructure consulting firms based in Ireland at a glance

As of Sep 29, 2026

47.1%Verified-email coverage

29.5Average contacts per company

11-50Median size (employees)

10.7%Largest-city concentration · Dublin

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 103 companies.

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 railway infrastructure consulting 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 “railway infrastructure consulting 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 railway infrastructure consulting 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 railway infrastructure consulting 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, 1,428 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 29, 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 railway infrastructure consulting 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 railway infrastructure consulting firms are there based in Ireland?

RevenueBase identified 103 railway infrastructure consulting 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?

Nicholas O'dwyer LTD, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most railway infrastructure consulting firms?

Dublin leads with 11 headquartered companies, followed by Limerick (6) and Naas (4).

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 1,428 verified decision-maker contacts tracked across these 103 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 29, 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.