Company lists · Data refreshed September 2026

Top 24 Business transformation consulting firms based in Spain

Name: Business transformation consulting firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 2,869 companies tracked

RevenueBase identified 2,869 business transformation consulting firms headquartered in Spain as of September 2026 and tracks 85,410 professional contacts across them, including 8,679 with verified work emails and 1,354 with mobile numbers. Madrid is the largest hub.

This list covers business transformation consulting firms headquartered in Spain, 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 23, 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 23, 2026 86% judged on-target in blind review

2,869Companies

85,410Contacts tracked

8,679Verified emails

1,354Mobile numbers

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The 24 largest business transformation consulting firms based in Spain

Ranked by team size

Top 24 of 2,869 business transformation consulting firms based in Spain, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business transformation 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	Seidor	Partial evidence	Barcelona, SpainHQ checked Sep 23, 2026	5,001-10,000	6,133 contacts →
	Partial evidence “At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…” Source: RevenueBase Database · checked Sep 23, 2026
2	Management Solutions	Partial evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	4,468 contacts →
	Partial evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 23, 2026
3	VASS	Partial evidence	Alcobendas, SpainHQ checked Sep 23, 2026	1,001-5,000	2,292 contacts →
	Partial evidence “VASS is a global technology company specialized in generating business value through intelligent (digital) transformation, integrating technology, data, artificial intelligence…” Source: RevenueBase Database · checked Sep 23, 2026
4	Stratesys	Indirect evidence	Madrid (headquarters), SpainHQ checked Sep 23, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “We are a multinational company specialized in different leading technology platforms such as SAP, Salesforce, Microsoft, OpenText and other software providers that are part of our…” Source: RevenueBase Database · checked Sep 23, 2026
5	Entelgy	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	1,541 contacts →
	Indirect evidence “Somos Entelgy,#TheBusinessTechConsultancy, un acelerador de la transformación para quienes necesitan seguir siendo competitivos en un mundo cambiante a gran velocidad.” Source: RevenueBase Database · checked Sep 23, 2026
6	Izertis	Indirect evidence	Gijón, SpainHQ checked Sep 23, 2026	1,001-5,000	1,318 contacts →
	Indirect evidence “En Izertis, no solo creemos en la innovación: la vivimos.” Source: RevenueBase Database · checked Sep 23, 2026
7	NAE	Partial evidence	Barcelona, SpainHQ checked Sep 23, 2026	501-1,000	503 contacts →
	Partial evidence “Nae is an international consulting firm specialized in the telecom sector, providing deal & strategy, business, and technology advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
8	Qaracter	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	501-1,000	495 contacts →
	Indirect evidence “Qaracter es una firma internacional de consultoría que ofrece servicios de asesoramiento empresarial, financiero, de riesgos, tecnológico y de procesos, basados en el conocimiento…” Source: RevenueBase Database · checked Sep 23, 2026
9	Grupo Versia	Indirect evidence	Barakaldo, SpainHQ checked Sep 23, 2026	501-1,000	489 contacts →
	Indirect evidence “Grupo Versia es una compañía dedicada a la mejora de procesos de negocio de sus clientes.” Source: RevenueBase Database · checked Sep 23, 2026
10	Atsistemas	Partial evidence	Las Rozas, SpainHQ checked Sep 23, 2026	1,001-5,000	391 contacts →
	Partial evidence “With about 2200 experts atSistemas delivers IT consulting, services and software development which to help organizations to be more efficient and profitable.” Source: RevenueBase Database · checked Sep 23, 2026
11	Integra	Partial evidence	Zaragoza, SpainHQ checked Sep 23, 2026	501-1,000	375 contacts →
	Partial evidence “We are a technology consulting company, formed by different benchmark brands, which creates, through specialization in areas and technological and strategic divisions, an…” Source: RevenueBase Database · checked Sep 23, 2026
12	Opentrends	Indirect evidence	Barcelona, SpainHQ checked Sep 23, 2026	201-500	342 contacts →
	Indirect evidence “Are you Ready?” Source: RevenueBase Database · checked Sep 23, 2026
13	Excelia	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 23, 2026	201-500	317 contacts →
	Partial evidence “We are a global consulting, technology, and professional services firm with over 25 years of experience.” Source: RevenueBase Database · checked Sep 23, 2026
14	Viseo Iberia	Strong evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	309 contacts →
	Strong evidence “VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Source: RevenueBase Database · checked Sep 23, 2026
15	BIP Spain	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	5,001-10,000	292 contacts →
	Indirect evidence “BIP es una consultora internacional especializada, desde su fundación en 2003, en facilitar la transformación end-to-end de los negocios de sus clientes, donde “hacemos que las…” Source: RevenueBase Database · checked Sep 23, 2026
16	Timestamp España	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 23, 2026	1,001-5,000	284 contacts →
	Partial evidence “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Source: RevenueBase Database · checked Sep 23, 2026
17	Overlap	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	201-500	280 contacts →
	Indirect evidence “Overlap es una consultoría especializada en la implantación y despliegue de estrategias comerciales y de negocio a través del aprendizaje y el desarrollo de personas.” Source: RevenueBase Database · checked Sep 23, 2026
18	CARSA	Partial evidence	Getxo - Las Arenas, SpainHQ checked Sep 23, 2026	n/a	274 contacts →
	Partial evidence “CARSA has a strong track record as a specialist provider of innovation, technology and internationalisation consulting services to clients around the world.” Source: RevenueBase Database · checked Sep 23, 2026
19	Avos Tech A Prosegur Company	Partial evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	272 contacts →
	Partial evidence “We are specialists in guiding our customers through the digital transformation process.” Source: RevenueBase Database · checked Sep 23, 2026
20	Lider IT Consulting	Partial evidence	Llanera, SpainHQ checked Sep 23, 2026	201-500	204 contacts →
	Partial evidence “En LIDER IT Consulting llevamos más de 40 años ayudando a nuestros clientes a mejorar la gestión mediante la consultoría, el desarrollo y la implantación de soluciones integradas.” Source: RevenueBase Database · checked Sep 23, 2026
21	Corus Consulting	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	201-500	203 contacts →
	Indirect evidence “Corus es una consultora tecnológica y de negocio con más de 20 años de experiencia en el sector, con más de 400 profesionales trabajando en proyectos nacionales e internacionales…” Source: RevenueBase Database · checked Sep 23, 2026
22	IFR Group	Indirect evidence	Lleida, SpainHQ checked Sep 23, 2026	51-200	199 contacts →
	Indirect evidence “IFR Group is a consultancy founded in 1985 that supports companies in transforming their management, offering solutions that integrate technology, sector expertise, and a vision…” Source: RevenueBase Database · checked Sep 23, 2026
23	Adea Information Intelligence	Indirect evidence	Azuqueca De Henares, SpainHQ checked Sep 23, 2026	201-500	183 contacts →
	Indirect evidence “Desde en AdeA diseñamos estrategias de gestión documental y optimización de procesos a la medida de cada organización.” Source: RevenueBase Database · checked Sep 23, 2026
24	DISID	Strong evidence	Valencia, SpainHQ checked Sep 23, 2026	51-200	178 contacts →
	Strong evidence “DISID is a technology consulting company that carries out Digital Transformation projects following a model of technological partner, we help our clients with the latest…” Source: RevenueBase Database · checked Sep 23, 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: business transformation 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 business transformation consulting firms.
Partial evidence: Its own public description names part of business transformation consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business transformation 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 24 of 2,869 business transformation consulting firms based in Spain

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Business transformation consulting firms based in Spain at a glance

As of Sep 23, 2026

10.2%Verified-email coverage

1.6%Mobile-number coverage

29.8Average contacts per company

1-10Median size (employees)

28.7%Largest-city concentration · Madrid

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

2,027

11-50

622

51-200

137

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 26.0d

6,6560–30

1,75831–60

14261–90

490–180

119180+

Company record updated

Median 74.0d

00–30

22,09031–60

42,10961–90

17,49990–180

3,712180+

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 business transformation 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 Spain whose own description of what they do matches “business transformation 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 business transformation 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 business transformation consulting firms, and records with no verified work email. Companies headquartered outside Spain 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, 8,679 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 23, 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.

Business transformation consulting firms by metro

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 business transformation 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 business transformation consulting firms are there based in Spain?

RevenueBase identified 2,869 business transformation consulting firms headquartered in Spain 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?

Seidor, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most business transformation consulting firms?

Madrid leads with 824 headquartered companies, followed by Barcelona (543) and Valencia (104).

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 8,679 verified decision-maker contacts tracked across these 2,869 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 23, 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.