Company lists · Data refreshed September 2026

Top 25 Mechanical engineering firms based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 64 companies tracked

RevenueBase identified 64 mechanical engineering firms headquartered in Ireland as of September 2026 and tracks 2,013 professional contacts across them, including 451 with verified work emails. Dublin is the largest hub.

This list covers mechanical engineering 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 17, 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 17, 2026 86% judged on-target in blind review

64Companies

2,013Contacts tracked

451Verified emails

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The 25 largest mechanical engineering firms based in Ireland

Ranked by team size

Top 25 of 64 mechanical engineering firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical engineering 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	Dornan	Partial evidence	Cork, IrelandHQ checked Sep 17, 2026	501-1,000	1,257 contacts →
	Partial evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 17, 2026
2	Gaffney Mechanical	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	93 contacts →
	Partial evidence “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Source: RevenueBase Database · checked Sep 17, 2026
3	Varming Consulting Engineers LTD	Partial evidence	Dundrum, IrelandHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial 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 17, 2026
4	LMH Engineering Ireland	Strong evidence	Arklow, IrelandHQ checked Sep 17, 2026	51-200	54 contacts →
	Strong evidence “Mechanical & Structural Engineering Solutions for both on-site and offsite construction.” Source: RevenueBase Database · checked Sep 17, 2026
5	Project Engineering	Strong evidence	Ardee, IrelandHQ checked Sep 17, 2026	n/a	49 contacts →
	Strong evidence “Project Engineering are a leading provider of mechanical engineering and product development services to the manufacturing and technology sectors.” Source: RevenueBase Database · checked Sep 17, 2026
6	Axiseng	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	47 contacts →
	Partial evidence “Axiseng Consulting Engineers is a premier independent building services consulting engineering practice, founded in 2004 and celebrating 20 years of excellence in delivering…” Source: RevenueBase Database · checked Sep 17, 2026
7	Hayes Mechanical & Engineering LTD	Strong evidence	Claremorris, IrelandHQ checked Sep 17, 2026	51-200	41 contacts →
	Strong evidence “Hayes Mechanical & Engineering Ltd is an established mechanical engineering and structural steel contractor operating across Ireland, the UK and Europe.” Source: RevenueBase Database · checked Sep 17, 2026
8	Foynes Engineering Limited	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	51-200	36 contacts →
	Partial evidence “Founded in 1993 Foynes Engineering Ltd, is established as a key player engaged in heavy industry and the manufacture, installation, and commissioning of complete turnkey…” Source: RevenueBase Database · checked Sep 17, 2026
9	MMA Consulting Engineers	Strong evidence	Balbriggan, IrelandHQ checked Sep 17, 2026	11-50	35 contacts →
	Strong evidence “MMA Consulting Engineers is committed to providing integrated engineering solutions and has grown to become one of the most recognized and sought-after mechanical and electrical…” Source: RevenueBase Database · checked Sep 17, 2026
10	MEP Engineering Services	Strong evidence	Cork, IrelandHQ checked Sep 17, 2026	11-50	31 contacts →
	Strong evidence “MEP Engineering Services Ltd is a leading provider of high quality professional Mechanical and Electrical engineering & Project Management consultancy services to the…” Source: RevenueBase Database · checked Sep 17, 2026
11	OMC	Partial evidence	Galway, IrelandHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial evidence “OMC Group, we provide a seamless, multidisciplinary consultancy service, specialising in engineering, design, and compliance solutions for commercial projects.” Source: RevenueBase Database · checked Sep 17, 2026
12	NGS Mechanical & Electrical Services	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	19 contacts →
	Partial evidence “NGS Mechanical Services is a privately owned and run mechanical services company founded in 2013 by Noel Geraghty (formally of Noel Geraghty Heating and Plumbing).” Source: RevenueBase Database · checked Sep 17, 2026
13	ENX	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Mechanical, Electrical and Sustainability Consulting Engineers” Source: RevenueBase Database · checked Sep 17, 2026
14	Pemcas	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Pemcas - is a multidisciplinary engineering company providing a complete range of services for design & construction (delivery) of your facilities and plant.” Source: RevenueBase Database · checked Sep 17, 2026
15	JAK Consulting Engineers	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “JAK Consulting Engineers is a leading multi-award winning MEP design and sustainable energy consultancy firm in Ireland, UK, Middle East and Asia.” Source: RevenueBase Database · checked Sep 17, 2026
16	Pmep Consulting LTD	Strong evidence	Citywest Shopping Centre, IrelandHQ checked Sep 17, 2026	11-50	12 contacts →
	Strong evidence “Penston MEP Consulting Limited is a Mechanical and Electrical Engineering Consultancy Practice.” Source: RevenueBase Database · checked Sep 17, 2026
17	DON O' Malley & Partners Consulting Engineers. Est. 1967	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “Don O'Malley & Partners was established in 1967 and is one of Ireland’s leading Consulting Engineering Practices in Building Services Engineering.” Source: RevenueBase Database · checked Sep 17, 2026
18	Hybrid Engineering & Contracting LTD	Strong evidence	Mullingar, IrelandHQ checked Sep 17, 2026	11-50	11 contacts →
	Strong evidence “Hybrid Engineering & Contracting operates as a Mechanical Engineering Contractor and has been positioning itself to become a market leader in the mechanical service sector.” Source: RevenueBase Database · checked Sep 17, 2026
19	Paragon GRP Limited	Strong evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	10 contacts →
	Strong evidence “An Engineering Group, specialising in Mechanical, Air Conditioning and Building Facilities contracts.” Source: RevenueBase Database · checked Sep 17, 2026
20	Temec Limited	Partial evidence	Dublin 15, IrelandHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Mechanical Services Contractors” Source: RevenueBase Database · checked Sep 17, 2026
21	Engenuiti	Partial evidence	Ballincollig Cork, IrelandHQ checked Sep 17, 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 17, 2026
22	Once Consultant Engineers	Indirect evidence	Walkinstown, IrelandHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Consultant Engineers based in Dublin, Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
23	PHM Consulting	Partial evidence	Limerick, IrelandHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Civil and Structural Consulting Engineering Company” Source: RevenueBase Database · checked Sep 17, 2026
24	Walsh Design Group	Indirect evidence	Douglas, IrelandHQ checked Sep 17, 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 17, 2026
25	Rigney Engineering LTD	Partial evidence	Kilrush, IrelandHQ checked Sep 17, 2026	11-50	7 contacts →
	Partial evidence “Providing complete engineering solutions for almost 20 years.” Source: RevenueBase Database · checked Sep 17, 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: mechanical engineering 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 mechanical engineering firms.
Partial evidence: Its own public description names part of mechanical engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical engineering 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 64 mechanical engineering firms based in Ireland

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Mechanical engineering firms based in Ireland at a glance

As of Sep 17, 2026

22.4%Verified-email coverage

31.5Average contacts per company

11-50Median size (employees)

12.5%Largest-city concentration · Dublin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 64 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 mechanical engineering 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 “mechanical engineering 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 mechanical engineering 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 mechanical engineering 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, 451 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 17, 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 mechanical engineering 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 mechanical engineering firms are there based in Ireland?

RevenueBase identified 64 mechanical engineering 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?

Dornan, headquartered in Little Island, tops this list with the largest team on record.

Which city has the most mechanical engineering firms?

Dublin leads with 8 headquartered companies, followed by Limerick (5) and Abbeyfeale West (1).

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 451 verified decision-maker contacts tracked across these 64 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 17, 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.