Company lists · Data refreshed September 2026

Top 25 D and i consulting firms based in Ireland

Name: D and i consulting firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 303 companies tracked

RevenueBase identified 303 d and i consulting firms headquartered in Ireland as of September 2026 and tracks 556,971 professional contacts across them, including 154,666 with verified work emails and 49,934 with mobile numbers. Dublin is the largest hub.

This list covers d and i 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 24, 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 24, 2026 86% judged on-target in blind review

303Companies

556,971Contacts tracked

154,666Verified emails

49,934Mobile numbers

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The 25 largest d and i consulting firms based in Ireland

Ranked by team size

Top 25 of 303 d and i consulting firms based in Ireland, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to d and i consulting 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	Accenture	Indirect evidence	Dublin 2, IrelandHQ checked Sep 24, 2026	10001+	551,347 contacts →
	Indirect evidence “Accenture helps the world’s leading enterprises reinvent by building their digital core and unleashing the power of AI to create value at speed for organizations across industries.” Source: RevenueBase Database · checked Sep 24, 2026
2	Version 1	Indirect evidence	Dublin 1, IrelandHQ checked Sep 24, 2026	1,001-5,000	3,105 contacts →
	Indirect evidence “Version 1 is a leader in AI and digital transformation, partnering strategically with global organisations to transform and adopt technology and drive innovation in a responsible…” Source: RevenueBase Database · checked Sep 24, 2026
3	Zartis	Partial evidence	Cork, IrelandHQ checked Sep 24, 2026	201-500	230 contacts →
	Partial evidence “Zartis is a global technology consulting partner specialising in AI transformation and modern software delivery.” Source: RevenueBase Database · checked Sep 24, 2026
4	Business And Organisational Strategies	Indirect evidence	Co. Dublin, IrelandHQ checked Sep 24, 2026	n/a	179 contacts →
	Indirect evidence “Digital strategy service business operated by Aileen O’Toole, co-founder of The Sunday Business Post.” Source: RevenueBase Database · checked Sep 24, 2026
5	Cubematch	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	201-500	149 contacts →
	Indirect evidence “CubeMatch is a global change and transformation consultancy, Powering Change for Financial Services since 2002.” Source: RevenueBase Database · checked Sep 24, 2026
6	Digitalwell	Indirect evidence	Dublin 4, IrelandHQ checked Sep 24, 2026	201-500	114 contacts →
	Indirect evidence “We are a market leading provider of enterprise communications, consultancy and technology transformation services.” Source: RevenueBase Database · checked Sep 24, 2026
7	Presidio Europe & Asia Pacific	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	201-500	102 contacts →
	Indirect evidence “Welcome to the official EMEA & APAC page for Presidio.” Source: RevenueBase Database · checked Sep 24, 2026
8	Nucleo	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	87 contacts →
	Indirect evidence “We are a data and systems intelligence consultancy driving operational excellence for asset-intensive and regulated organisations.” Source: RevenueBase Database · checked Sep 24, 2026
9	Core Optimisation	Indirect evidence	Shannon, IrelandHQ checked Sep 24, 2026	51-200	56 contacts →
	Indirect evidence “Core Optimisation bridges the gap between Business Strategy and Digital Strategy, delivering performance-driven results through Digital Performance and Digital Transformation.” Source: RevenueBase Database · checked Sep 24, 2026
10	Deveire	Indirect evidence	National Technology Park, IrelandHQ checked Sep 24, 2026	51-200	55 contacts →
	Indirect evidence “Deveire creates bespoke digital solutions that transform your business world.” Source: RevenueBase Database · checked Sep 24, 2026
11	ALL Human	Indirect evidence	Dublin 2, IrelandHQ checked Sep 24, 2026	51-200	48 contacts →
	Indirect evidence “Most businesses know they need to move faster on AI and digital.” Source: RevenueBase Database · checked Sep 24, 2026
12	E-Celtic Limited	Indirect evidence	Dublin 8, IrelandHQ checked Sep 24, 2026	51-200	47 contacts →
	Indirect evidence “e- Celtic is a leading ICT company headquartered in Dublin, Ireland.” Source: RevenueBase Database · checked Sep 24, 2026
13	Sidero	Indirect evidence	Athlone, IrelandHQ checked Sep 24, 2026	51-200	44 contacts →
	Indirect evidence “GlobalLogic is a leader in digital engineering.” Source: RevenueBase Database · checked Sep 24, 2026
14	Provident CRM	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	42 contacts →
	Indirect evidence “For over 20 years, Provident CRM has helped hundreds of companies across Ireland, the UK, and Europe implement effective customer relationship management strategies and enhance…” Source: RevenueBase Database · checked Sep 24, 2026
15	Client Solutions	Indirect evidence	Dublin 12, IrelandHQ checked Sep 24, 2026	201-500	39 contacts →
	Indirect evidence “Client Solutions is the Irish enterprise technology partner of choice.” Source: RevenueBase Database · checked Sep 24, 2026
16	Deep Digital Solutions Group	Indirect evidence	Waterford, IrelandHQ checked Sep 24, 2026	51-200	35 contacts →
	Indirect evidence “Leading provider of digitalization and data services, specialising in transforming businesses through innovative data lifecycle solutions.” Source: RevenueBase Database · checked Sep 24, 2026
17	Periti Digital	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	35 contacts →
	Indirect evidence “At Periti, we believe that no business should feel intimidated making the digital transformation a reality.” Source: RevenueBase Database · checked Sep 24, 2026
18	Share IT	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	51-200	31 contacts →
	Indirect evidence “We provide a portfolio of services and solutions that enable our clients to thrive and grow in a highly demanding and competitive economy.” Source: RevenueBase Database · checked Sep 24, 2026
19	Lbspartners	Indirect evidence	Limerick, IrelandHQ checked Sep 24, 2026	11-50	27 contacts →
	Indirect evidence “Founded in 2002, LBSPartners is a business consultancy that provides leadership and operational excellence training that specialises in the areas of digitalisation, climate…” Source: RevenueBase Database · checked Sep 24, 2026
20	Impact Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	23 contacts →
	Indirect evidence “Mission Statement: Impact Engineering Ltd strives to operate as a trusted automation partner, utilising a customer centric focus to combine our technical and business expertise…” Source: RevenueBase Database · checked Sep 24, 2026
21	Torque Partnership	Indirect evidence	Kilmeedy, IrelandHQ checked Sep 24, 2026	11-50	22 contacts →
	Indirect evidence “Torque delivers digital acceleration for global brands.” Source: RevenueBase Database · checked Sep 24, 2026
22	Maverick Communications International	Indirect evidence	Killaloe/ballina, IrelandHQ checked Sep 24, 2026	11-50	21 contacts →
	Indirect evidence “We specialise in helping progressive, internationally focused, industrial companies accelerate growth by evolving their marketing for an increasingly digital world.” Source: RevenueBase Database · checked Sep 24, 2026
23	Devensis	Indirect evidence	Dublin 18, IrelandHQ checked Sep 24, 2026	11-50	21 contacts →
	Indirect evidence “At Devensis, we don’t just develop software-we create solutions that transform businesses.” Source: RevenueBase Database · checked Sep 24, 2026
24	Swappsi Software	Indirect evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	17 contacts →
	Indirect evidence “Swappsi is an Irish-based software development company that specialises in Digital Transformation and dedicated to creating interactive solutions tailored to each client’s unique…” Source: RevenueBase Database · checked Sep 24, 2026
25	Clarion Consulting	Partial evidence	Dublin, IrelandHQ checked Sep 24, 2026	11-50	16 contacts →
	Partial evidence “Clarion Consulting is a leading Business and Information Technology consulting company.” Source: RevenueBase Database · checked Sep 24, 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: d and i consulting 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 d and i consulting firms.
Partial evidence: Its own public description names part of d and i consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name d and i consulting 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 303 d and i consulting firms based in Ireland

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D and i consulting firms based in Ireland at a glance

As of Sep 24, 2026

27.8%Verified-email coverage

9.0%Mobile-number coverage

1838.2Average contacts per company

1-10Median size (employees)

40.3%Largest-city concentration · Dublin

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

198

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

2,2850–30

58331–60

4161–90

190–180

30180+

Company record updated

Median 76.0d

00–30

1,27231–60

2,77861–90

1,51190–180

328180+

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 d and i consulting 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 “d and i consulting 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 d and i consulting 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 d and i 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 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, 154,666 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 24, 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.

D and i consulting firms by metro

D and i consulting firms in Dublin122

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 d and i consulting 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 d and i consulting firms are there based in Ireland?

RevenueBase identified 303 d and i 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?

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

Which city has the most d and i consulting firms?

Dublin leads with 122 headquartered companies, followed by Cork (15) and Limerick (8).

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 154,666 verified decision-maker contacts tracked across these 303 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 24, 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.