Company lists · Data refreshed September 2026

Top 25 Transit authority engineering services based in Ireland

Name: Transit authority engineering services based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 54 companies tracked

RevenueBase identified 54 transit authority engineering services headquartered in Ireland as of September 2026 and tracks 1,745 professional contacts across them, including 961 with verified work emails. Dublin is the largest hub.

This list covers transit authority engineering services 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 19, 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 19, 2026 86% judged on-target in blind review

54Companies

1,745Contacts tracked

961Verified emails

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The 25 largest transit authority engineering services based in Ireland

Ranked by team size

Top 25 of 54 transit authority engineering services based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit authority engineering services: 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 19, 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 19, 2026
2	O'connor Sutton Cronin	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	201-500	241 contacts →
	Partial evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 19, 2026
3	Roughan & O'donovan	Partial evidence	Sandyford, IrelandHQ checked Sep 19, 2026	201-500	227 contacts →
	Partial evidence “Roughan and O’Donovan (ROD) is a leading civil, environmental and structural engineering consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
4	Egis In Ireland	Partial evidence	Dundrum Road, IrelandHQ checked Sep 19, 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 19, 2026
5	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 19, 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 19, 2026
6	Fehily Timoney And Company	Partial evidence	Cork, IrelandHQ checked Sep 19, 2026	51-200	116 contacts →
	Partial 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 19, 2026
7	Punch Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 19, 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 19, 2026
8	Barrett Mahony Consulting Engineers	Partial evidence	Dublin 2, IrelandHQ checked Sep 19, 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 19, 2026
9	Varming Consulting Engineers LTD	Indirect evidence	Dundrum, IrelandHQ checked Sep 19, 2026	11-50	55 contacts →
	Indirect evidence “At Varming, we’re all about cutting-edge design and meticulous oversight of mechanical and electrical services, whether it’s for brand-new constructions or revitalizing existing…” Source: RevenueBase Database · checked Sep 19, 2026
10	Garland	Partial evidence	Rathmines, IrelandHQ checked Sep 19, 2026	51-200	50 contacts →
	Partial evidence “GARLAND is an international consulting engineering firm.” Source: RevenueBase Database · checked Sep 19, 2026
11	Clandillon Civil Consulting LTD	Partial evidence	Newbridge, IrelandHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial 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 19, 2026
12	DJF Engineering Services LTD	Indirect evidence	Cork, IrelandHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “PROJECT MANANGERS & CONSULTING ENGINEERS Project Execution, from Concept to Completion ~ WHAT WE DO ~ Our practice has maintained a reputation for high quality Project Management…” Source: RevenueBase Database · checked Sep 19, 2026
13	Mcardle Doyle	Partial evidence	Dundalk, IrelandHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “Civil & Structural Engineering Consultancy” Source: RevenueBase Database · checked Sep 19, 2026
14	Doherty Finegan Kelly LTD	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “Doherty Finegan Kelly (DFK) Consulting Engineers are established Engineering Consultants and provide a comprehensive range of consultancy services specialising in all aspects of…” Source: RevenueBase Database · checked Sep 19, 2026
15	Furey Consulting Engineers	Indirect evidence	Naas, IrelandHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Our range of services include Project Management, Planning Services, Building Design, Re- Zoning Consultancy, technical support to the Legal profession, general construction…” Source: RevenueBase Database · checked Sep 19, 2026
16	Transport Insights	Partial evidence	Dublin 2, IrelandHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Transport Insights is an Irish based transport planning consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
17	Liffey Developments	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Since 1983, Liffey Developments has been providing a full range of civil engineering and project management services.” Source: RevenueBase Database · checked Sep 19, 2026
18	Kavanagh Burke Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Kavanagh Burke Consulting Engineers originated in 1995 offering a complete civil and structural engineering consultancy to clients in both the private and public sector.” Source: RevenueBase Database · checked Sep 19, 2026
19	Engenuiti	Partial evidence	Ballincollig Cork, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Engenuiti Consulting Engineers is a full-service engineering firm with a focus on structural and civil engineering services.” Source: RevenueBase Database · checked Sep 19, 2026
20	BFA Consulting	Indirect evidence	Bray, IrelandHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “At BFA Consulting, we are passionate about sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
21	MPA Consulting Engineers	Partial evidence	Kilkenny, IrelandHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Martin Peters Associates (MPA) Consulting Engineers is a vibrant Multi-Disciplinary Team of Civil, Structural & Transport Engineers established in 2005 with offices in Kilkenny…” Source: RevenueBase Database · checked Sep 19, 2026
22	Walsh Design Group	Indirect evidence	Douglas, IrelandHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Walsh Design Group is an established firm of Consulting Engineers with offices in Cork and Dublin.” Source: RevenueBase Database · checked Sep 19, 2026
23	Alan Traynor Consulting Engineers	Indirect evidence	Belturbet, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Alan Traynor Consulting Engineers Ltd was formed in and have offices in Belturbet Business Park, Belturbet, Co.” Source: RevenueBase Database · checked Sep 19, 2026
24	Mable Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Mable Consulting Engineers was founded by Barry McGinn to provide specialist engineering services to a broad range of clients in both the public and private sectors.” Source: RevenueBase Database · checked Sep 19, 2026
25	Thomas Garland & Partners	Partial evidence	Dublin 6, IrelandHQ checked Sep 19, 2026	51-200	5 contacts →
	Partial evidence “Since 1937 The Garland Group has been a recognised leader in Civil and Structural Engineering, Health & Safety and Project Management Services.” Source: RevenueBase Database · checked Sep 19, 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: transit authority engineering services. 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 transit authority engineering services.
Partial evidence: Its own public description names part of transit authority engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit authority engineering services. 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 54 transit authority engineering services based in Ireland

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Transit authority engineering services based in Ireland at a glance

As of Sep 19, 2026

55.1%Verified-email coverage

32.3Average contacts per company

11-50Median size (employees)

18.5%Largest-city concentration · Dublin

Sep 19, 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 54 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 transit authority engineering services, 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 “transit authority engineering services”. 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 transit authority engineering services), 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 transit authority engineering services, 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, 961 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 19, 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 transit authority engineering services, 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 transit authority engineering services are there based in Ireland?

RevenueBase identified 54 transit authority engineering services 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 transit authority engineering services?

Dublin leads with 10 headquartered companies, followed by Bray (2) and Cork (2).

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 961 verified decision-maker contacts tracked across these 54 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 19, 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.