Company lists · Data refreshed September 2026

Top 25 IT infrastructure consulting firms based in Ireland

Name: IT 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 4, 2026 282 companies tracked

RevenueBase identified 282 IT infrastructure consulting firms headquartered in Ireland as of September 2026 and tracks 4,526 professional contacts across them, including 2,049 with verified work emails and 189 with mobile numbers. Dublin is the largest hub.

This list covers IT 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

282Companies

4,526Contacts tracked

2,049Verified emails

189Mobile numbers

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The 25 largest IT infrastructure consulting firms based in Ireland

Ranked by team size

Top 25 of 282 IT infrastructure consulting firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ERGOPartial evidence	East Point Business Park, IrelandHQ checked Sep 4, 2026	501-1,000	832
	“Business and IT leaders trust Ergo.” Source: company website · checked Sep 4, 2026
2	PFH Technology GroupIndirect evidence	Dublin, IrelandHQ checked Sep 4, 2026	501-1,000	575
	“PFH Technology Group, a Ricoh Company, is Ireland's largest ICT services and solutions provider with 800+ employees (600+ technical).” Source: company website · checked Sep 4, 2026
3	Viatel Technology GroupIndirect evidence	IrelandHQ checked Sep 4, 2026	201-500	334
	“We deliver fully managed security, networking, cloud and communications services designed to drive enterprise.” Source: company website · checked Sep 4, 2026
4	NostraPartial evidence	Dublin 12, IrelandHQ checked Sep 4, 2026	201-500	286
	“Nostra was established in 2006 and in that time has become one of Ireland’s most trusted providers of Managed IT and Cyber Security Services for a wide range of sectors.” Source: company website · checked Sep 4, 2026
5	Presidio Europe & Asia PacificIndirect evidence	Dublin, IrelandHQ checked Sep 4, 2026	201-500	100
	“Welcome to the official EMEA & APAC page for Presidio.” Source: company website · checked Sep 4, 2026
6	Triangle Technology ServicesIndirect evidence	IrelandHQ checked Sep 4, 2026	51-200	98
	“At Triangle, we are committed to the delivery of customer results through our expertise and technology.” Source: company website · checked Sep 4, 2026
7	DatapacIndirect evidence	IrelandHQ checked Sep 4, 2026	51-200	86
	“Datapac is one of Ireland’s largest and most successful ICT solutions and services providers.” Source: company website · checked Sep 4, 2026
8	Enterprise Registry SolutionsIndirect evidence	IrelandHQ checked Sep 4, 2026	11-50	76
	“Welcome to Enterprise Registry Solutions (ERS), a wholly owned subsidiary of Information Services Corporation (ISC).” Source: company website · checked Sep 4, 2026
9	HCSIndirect evidence	Dublin 24, IrelandHQ checked Sep 4, 2026	51-200	63
	“The technology landscape may be changing every day, but with a team of internationally accredited experts right here in Ireland, HCS can navigate your organisation across its…” Source: company website · checked Sep 4, 2026
10	InnovatePartial evidence	Dublin 18, IrelandHQ checked Sep 4, 2026	11-50	58
	“INNOVATE - The IT Solutions People INNOVATE provide Managed IT Services and Professional IT Services across \| Networking \| Security \| Communications \| Cloud Productivity \| Cloud…” Source: company website · checked Sep 4, 2026
11	Vision Business Technology VBTPartial evidence	Kilmacanogue, IrelandHQ checked Sep 4, 2026	51-200	56
	“At VBT IT Solutions, we help businesses leverage technology to operate more securely, efficiently, and productively.” Source: company website · checked Sep 4, 2026
12	Intuity TechnologiesPartial evidence	Galway, IrelandHQ checked Sep 4, 2026	51-200	50
	“Intuity Technologies is an Irish technology company specialising in Data, AI, IT and Cybersecurity, headquartered in Galway.” Source: company website · checked Sep 4, 2026
13	Saros ConsultingStrong evidence	IrelandHQ checked Sep 4, 2026	51-200	47
	“Saros Consulting is a global leader in IT consulting and strategic project management.” Source: company website · checked Sep 4, 2026
14	FuturerangeIndirect evidence	Sandyford, IrelandHQ checked Sep 4, 2026	11-50	45
	“We are FutureRange.” Source: company website · checked Sep 4, 2026
15	Unitec IT SolutionsIndirect evidence	Clonmel, IrelandHQ checked Sep 4, 2026	11-50	36
	“Unitec are an international technology company with offices in both Ireland and South Africa.” Source: company website · checked Sep 4, 2026
16	Business IT SolutionsIndirect evidence	Kilkenny, IrelandHQ checked Sep 4, 2026	11-50	31
	“BITS (BUSINESS I.T.” Source: company website · checked Sep 4, 2026
17	MJ Flood TechnologyIndirect evidence	Dublin, IrelandHQ checked Sep 4, 2026	51-200	31
	“At MJ Flood Technology, we specialise in connectivity – connecting people, processes and technology to help organisations capitalise on the disruptive, digitised world we live in.” Source: company website · checked Sep 4, 2026
18	Bytek IT SolutionsIndirect evidence	Glasnevin, IrelandHQ checked Sep 4, 2026	11-50	30
	“Power your business with hassle-free solutions.” Source: company website · checked Sep 4, 2026
19	TypetecPartial evidence	Ballymount, IrelandHQ checked Sep 4, 2026	11-50	29
	“Celebrating over 35 years in business, Typetec is a leading professional IT cloud and managed service company.” Source: company website · checked Sep 4, 2026
20	ParadynPartial evidence	Sandyford, IrelandHQ checked Sep 4, 2026	51-200	28
	“Paradyn is a leading provider of IT security and consultancy services in Ireland, offering a comprehensive, best-in-class suite of security services to monitor, protect and defend…” Source: company website · checked Sep 4, 2026
21	ProcloudPartial evidence	IrelandHQ checked Sep 4, 2026	11-50	26
	“Enterprise technology experts who take your IT success personally.” Source: company website · checked Sep 4, 2026
22	Infinity ITPartial evidence	Dublin, IrelandHQ checked Sep 4, 2026	11-50	26
	“Infinity IT provides Managed IT, Security and Communications Solutions and Services, both in the Cloud and On Premise, to both the Private and Public sectors.” Source: company website · checked Sep 4, 2026
23	DNA IT SolutionsPartial evidence	Dublin, IrelandHQ checked Sep 4, 2026	11-50	26
	“DNA IT Solutions provide effective technologies for business success.” Source: company website · checked Sep 4, 2026
24	Infinite TechnologyPartial evidence	Dublin, IrelandHQ checked Sep 4, 2026	11-50	26
	“At Infinite Technology, we’re dedicated to advancing Irish businesses with IT solutions that enhance efficiency, strengthen security, and drive growth.” Source: company website · checked Sep 4, 2026
25	Cusken Sync ITPartial evidence	Dundalk, IrelandHQ checked Sep 4, 2026	11-50	24
	“At Cusken Sync IT, we help you transform by maximising the value of your technology investment.” Source: company website · checked Sep 4, 2026

Showing 25 of 282 IT infrastructure consulting firms based in Ireland

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IT infrastructure consulting firms based in Ireland at a glance

As of Sep 4, 2026

1-10Median size (employees)

DublinLargest hub · 91 HQs

189Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

163

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

31–60

155

61–90

1,103

90–180

780

180+

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 IT infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “IT infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT 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 an evidence 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, 2,049 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 4, 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.

IT infrastructure consulting firms by metro

IT infrastructure consulting firms in Dublin91

Frequently asked

How many IT infrastructure consulting firms are there based in Ireland?

RevenueBase identified 282 IT 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?

ERGO, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most IT infrastructure consulting firms?

Dublin leads with 91 headquartered companies, followed by Cork (10) and Galway (7).

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 2,049 verified decision-maker contacts tracked across these 282 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 4, 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 SmartSearch, 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.