Company lists · Data refreshed September 2026

Top 25 Systems engineering consultants based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 104 companies tracked

RevenueBase identified 104 systems engineering consultants headquartered in Ireland as of September 2026 and tracks 4,470 professional contacts across them, including 1,567 with verified work emails. Dublin is the largest hub.

This list covers systems engineering consultants 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 18, 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 18, 2026 86% judged on-target in blind review

104Companies

4,470Contacts tracked

1,567Verified emails

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The 25 largest systems engineering consultants based in Ireland

Ranked by team size

Top 25 of 104 systems engineering consultants based in Ireland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to systems engineering consultants: 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 18, 2026	501-1,000	1,257 contacts →
	Partial evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 18, 2026
2	Nicholas O'dwyer LTD	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
3	O'connor Sutton Cronin	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	201-500	241 contacts →
	Partial evidence “OCSC is an established International Multidisciplinary Consulting Engineering & Project Management Practice.” Source: RevenueBase Database · checked Sep 18, 2026
4	MWP	Partial evidence	Blackrock, IrelandHQ checked Sep 18, 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 18, 2026
5	Barrett Mahony Consulting Engineers	Strong evidence	Dublin 2, IrelandHQ checked Sep 18, 2026	51-200	79 contacts →
	Strong 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 18, 2026
6	Prochem Engineering	Strong evidence	Kilkenny, IrelandHQ checked Sep 18, 2026	51-200	75 contacts →
	Strong evidence “Prochem Engineering is one of the leading engineering consultancy firms in Ireland, having been established in 1995.” Source: RevenueBase Database · checked Sep 18, 2026
7	Tandem Project Management LTD	Strong evidence	Blackrock, IrelandHQ checked Sep 18, 2026	51-200	65 contacts →
	Strong evidence “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Source: RevenueBase Database · checked Sep 18, 2026
8	Varming Consulting Engineers LTD	Indirect evidence	Dundrum, IrelandHQ checked Sep 18, 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 18, 2026
9	Garland	Partial evidence	Rathmines, IrelandHQ checked Sep 18, 2026	51-200	50 contacts →
	Partial evidence “GARLAND is an international consulting engineering firm.” Source: RevenueBase Database · checked Sep 18, 2026
10	Axiseng	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
11	Premium Power LTD	Strong evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	42 contacts →
	Strong evidence “Premium Power is an electrical engineering consultancy focused on providing innovative, bespoke solutions to the data centre, pharmaceutical, manufacturing, renewable & utility…” Source: RevenueBase Database · checked Sep 18, 2026
12	Eireng Consulting Engineers LTD	Indirect evidence	Blackrock, IrelandHQ checked Sep 18, 2026	11-50	38 contacts →
	Indirect 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 18, 2026
13	MMA Consulting Engineers	Partial evidence	Balbriggan, IrelandHQ checked Sep 18, 2026	11-50	35 contacts →
	Partial 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 18, 2026
14	Mmos Engineers	Strong evidence	Cork, IrelandHQ checked Sep 18, 2026	11-50	24 contacts →
	Strong evidence “Murphy Matson O’ Sullivan Consulting Engineers are a chartered engineering consultancy practice who provide clients with design, detailing and supervision services in the field of…” Source: RevenueBase Database · checked Sep 18, 2026
15	OMC	Strong evidence	Galway, IrelandHQ checked Sep 18, 2026	11-50	22 contacts →
	Strong 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 18, 2026
16	Downes Associates	Strong evidence	Dublin 12, IrelandHQ checked Sep 18, 2026	11-50	20 contacts →
	Strong 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 18, 2026
17	DRA Consulting Engineers	Partial evidence	Limerick, IrelandHQ checked Sep 18, 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 18, 2026
18	Mcardle Doyle	Strong evidence	Dundalk, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Strong evidence “Civil & Structural Engineering Consultancy” Source: RevenueBase Database · checked Sep 18, 2026
19	ENX	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	13 contacts →
	Indirect evidence “Mechanical, Electrical and Sustainability Consulting Engineers” Source: RevenueBase Database · checked Sep 18, 2026
20	Pemcas	Partial evidence	Limerick, IrelandHQ checked Sep 18, 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 18, 2026
21	JAK Consulting Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	12 contacts →
	Partial 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 18, 2026
22	Pmep Consulting LTD	Strong evidence	Citywest Shopping Centre, IrelandHQ checked Sep 18, 2026	11-50	12 contacts →
	Strong evidence “Penston MEP Consulting Limited is a Mechanical and Electrical Engineering Consultancy Practice.” Source: RevenueBase Database · checked Sep 18, 2026
23	Doherty Finegan Kelly LTD	Strong evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	11 contacts →
	Strong 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 18, 2026
24	Furey Consulting Engineers	Partial evidence	Naas, IrelandHQ checked Sep 18, 2026	1-10	11 contacts →
	Partial 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 18, 2026
25	DON O' Malley & Partners Consulting Engineers. Est. 1967	Partial evidence	Limerick, IrelandHQ checked Sep 18, 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 18, 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: systems engineering consultants. 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 systems engineering consultants.
Partial evidence: Its own public description names part of systems engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name systems engineering consultants. 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 104 systems engineering consultants based in Ireland

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Systems engineering consultants based in Ireland at a glance

As of Sep 18, 2026

35.1%Verified-email coverage

43.0Average contacts per company

11-50Median size (employees)

13.5%Largest-city concentration · Dublin

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 104 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 systems engineering consultants, 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 “systems engineering consultants”. 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 systems engineering consultants), 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 systems engineering consultants, 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, 1,567 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 18, 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 systems engineering consultants, 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 systems engineering consultants are there based in Ireland?

RevenueBase identified 104 systems engineering consultants 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 systems engineering consultants?

Dublin leads with 14 headquartered companies, followed by Cork (8) and Limerick (6).

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 1,567 verified decision-maker contacts tracked across these 104 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 18, 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.