Company lists · Data verified August 2026

Top 25 Enterprise IT infrastructure companies based in Ireland

Name: Enterprise IT infrastructure companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 110 companies tracked

There are 110 enterprise IT infrastructure companies headquartered in Ireland (RevenueBase, August 2026). RevenueBase tracks 1,421 professional contacts across them, including 634 with verified work emails and 188 with mobile numbers. Dublin is the largest hub.

This list covers enterprise IT infrastructure companies headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

110Companies

1,421Contacts tracked

634Verified emails

188Mobile numbers

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The 25 largest enterprise IT infrastructure companies based in Ireland

Ranked by team size

Top 25 of 110 enterprise IT infrastructure companies based in Ireland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Unicom Engineering	Galway	201-500	307	112
2	Presidio Europe & Asia Pacific	Dublin	201-500	100	77
3	Triangle Technology Services	n/a	51-200	98	75
4	Conscia	Citywest Business Campus	1,001-5,000	94	28
5	CET Connect	Clonmel	51-200	78	33
6	Innovate	Mullingar	11-50	58	39
7	TLS IT Solutions Dmcc	Navan	51-200	42	24
8	Tomorrows World TW	Dublin	51-200	36	25
9	Trojan IT	Boyle	11-50	33	27
10	CPP Associates, INC	Galway	11-50	31	20
11	MJ Flood Technology	Dublin	51-200	31	9
12	Procloud	Ireland	11-50	26	19
13	DNA IT Solutions	Dublin	11-50	26	15
14	DEITG	Sligo	1-10	16	12
15	Unity Technology Solutions- An Ekco Company	n/a	51-200	15	7
16	Precept IT	Sandyford	11-50	14	8
17	Iping IT Services	Dublin	1-10	14	3
18	FUEL	n/a	11-50	12	10
19	GPS IT Services LTD	Celbridge	11-50	9	5
20	Computer Technical Services	Tallaght	11-50	8	2
21	Dovetail Technologies LTD	Dublin	11-50	7	7
22	Everything IT	Dublin	11-50	7	7
23	Tridium LTD	Dublin	1-10	7	5
24	Echo IT LTD	Nenagh	11-50	7	2
25	GDK Network Systems	Rathfarnham	11-50	6	5

Showing 25 of 110 enterprise IT infrastructure companies based in Ireland

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Enterprise IT infrastructure companies based in Ireland at a glance

As of Aug 28, 2026

11-50Median size (employees)

DublinLargest hub · 33 HQs

188Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Enterprise IT infrastructure companies by metro

Metro	Companies
Enterprise IT infrastructure companies in Dublin	33
Enterprise IT infrastructure companies in Galway	3
Enterprise IT infrastructure companies in Sandyford	2
Enterprise IT infrastructure companies in Naas	2
Enterprise IT infrastructure companies in Dundalk	2
Enterprise IT infrastructure companies in Navan	2
Enterprise IT infrastructure companies in Limerick	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise IT infrastructure companies”, with match quality audited by blind human judging, and headquartered in Ireland.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many enterprise IT infrastructure companies are there based in Ireland?

There are 110 enterprise IT infrastructure companies headquartered in Ireland as of August 2026 (RevenueBase).

What is the largest company on this list?

Unicom Engineering, headquartered in Galway, tops this list with the largest team on record.

Which city has the most enterprise IT infrastructure companies?

Dublin leads with 33 headquartered companies, followed by Galway (3) and Sandyford (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 634 verified decision-maker contacts tracked across these 110 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.