Company lists · Data refreshed September 2026

Top 22 Enterprise cloud transformation firms based in Barcelona, Spain

RevenueBase identified 265 enterprise cloud transformation firms headquartered in Barcelona, Spain as of September 2026 and tracks 15,705 professional contacts across them, including 3,570 with verified work emails and 179 with mobile numbers. Madrid is the largest hub.

This list covers enterprise cloud transformation firms headquartered in Barcelona, 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 12, 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 12, 2026 86% judged on-target in blind review
265Companies
15,705Contacts tracked
3,570Verified emails
179Mobile numbers
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The 22 largest enterprise cloud transformation firms based in Barcelona, Spain

Ranked by team size
Top 22 of 265 enterprise cloud transformation firms based in Barcelona, Spain, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise cloud transformation 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceBarcelona, SpainHQ checked Sep 12, 20265,001-10,0006,133 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 12, 2026
2Indirect evidenceBarcelona, SpainHQ checked Sep 12, 20261,001-5,0002,576 contacts →

Indirect evidence

“En T-Systems, encontrarás proyectos rompedores que suman al bienestar social y ecológico.”

Source: RevenueBase Database · checked Sep 12, 2026
3Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026201-500449 contacts →

Indirect evidence

“Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.”

Source: RevenueBase Database · checked Sep 12, 2026
4Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026501-1,000391 contacts →

Indirect evidence

“Somos una compañía independiente con más de 30 años en el mercado Español implantando soluciones tecnológicas completas, innovadoras y estratégicas para nuestros clientes.”

Source: RevenueBase Database · checked Sep 12, 2026
5Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026201-500342 contacts →

Indirect evidence

“Are you Ready?”

Source: RevenueBase Database · checked Sep 12, 2026
6Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026201-500238 contacts →

Indirect evidence

“At NexTReT we are specialized in optimizing the ICT area of our clients and we help them acquire a high level of security with specialized solutions and services in…”

Source: RevenueBase Database · checked Sep 12, 2026
7Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026501-1,000167 contacts →

Indirect evidence

“Quiénes somos?”

Source: RevenueBase Database · checked Sep 12, 2026
8Partial evidenceBarcelona, SpainHQ checked Sep 12, 202651-200140 contacts →

Partial evidence

“Quantion provides end-to-end technology and digital services, supporting organizations throughout their digital transformation journey, from strategic definition to technology…”

Source: RevenueBase Database · checked Sep 12, 2026
9Partial evidenceBarcelona, SpainHQ checked Sep 12, 202651-200137 contacts →

Partial evidence

“Better Consultants is the strategic partner for innovation and digital transformation.”

Source: RevenueBase Database · checked Sep 12, 2026
10Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-200132 contacts →

Indirect evidence

“Aktios nace en 2013 con el objetivo de convertir la complejidad tecnológica en crecimiento real de negocio.”

Source: RevenueBase Database · checked Sep 12, 2026
11Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-200131 contacts →

Indirect evidence

“DQS/ is a is an IT consulting firm that uses Microsoft tools to align the strategies, processes and resources of companies, helping them to digitally transform their business and…”

Source: RevenueBase Database · checked Sep 12, 2026
12Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-200126 contacts →

Indirect evidence

“Driving innovation.”

Source: RevenueBase Database · checked Sep 12, 2026
13Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026201-500123 contacts →

Indirect evidence

“PowerData es una empresa multinacional de origen español con más de 25 años de experiencia en gestión de datos, apoyando a organizaciones en su camino hacia la transformación…”

Source: RevenueBase Database · checked Sep 12, 2026
14Partial evidenceBarcelona, SpainHQ checked Sep 12, 202651-200120 contacts →

Partial evidence

“Altostratus is a professional and managed cloud services consultancy belonging to the Telefónica Tech holding.”

Source: RevenueBase Database · checked Sep 12, 2026
15Partial evidenceBarcelona, SpainHQ checked Sep 12, 202651-200117 contacts →

Partial evidence

“Somos una consultora de negocio especializada en tecnologías Microsoft, Movilidad, Cloud y User Experience.”

Source: RevenueBase Database · checked Sep 12, 2026
16Partial evidenceBarcelona, SpainHQ checked Sep 12, 202651-200106 contacts →

Partial evidence

“A multidisciplinary technology & transformation partner designing intelligent digital solutions powered by data, AI, and human insight.”

Source: RevenueBase Database · checked Sep 12, 2026
17Indirect evidenceBarcelona, SpainHQ checked Sep 12, 2026201-500104 contacts →

Indirect evidence

“We drive digital innovation with SAP solutions in Spain and international markets.”

Source: RevenueBase Database · checked Sep 12, 2026
18Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-20064 contacts →

Indirect evidence

“Tu tecnología impulsa tu negocio o lo frena?”

Source: RevenueBase Database · checked Sep 12, 2026
19Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-20059 contacts →

Indirect evidence

“Technology drives growth, but not all companies are born digital.”

Source: RevenueBase Database · checked Sep 12, 2026
20Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-20052 contacts →

Indirect evidence

“Our selection of technologies and our methodology allow us to create "code" and "low-code" solutions in less time.”

Source: RevenueBase Database · checked Sep 12, 2026
21Partial evidenceBarcelona, SpainHQ checked Sep 12, 202611-5047 contacts →

Partial evidence

“Somos una consultora tecnológica especialista en digitalización y ciberseguridad, Top Partner Cloud de Microsoft.”

Source: RevenueBase Database · checked Sep 12, 2026
22Indirect evidenceBarcelona, SpainHQ checked Sep 12, 202651-20047 contacts →

Indirect evidence

“Somos una consultora tecnológica Partner de Microsoft, especializados en la transformación digital de empresas a través de la implantación, personalización y mantenimiento de…”

Source: RevenueBase Database · checked Sep 12, 2026

Showing 22 of 265 enterprise cloud transformation firms based in Barcelona, Spain

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Enterprise cloud transformation firms based in Barcelona, Spain at a glance

As of Sep 12, 2026
22.7%Verified-email coverage
1.1%Mobile-number coverage
59.3Average contacts per company
1-10Median size (employees)
191.7%Largest-city concentration · Madrid
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
136
11-50
81
51-200
29
201-500
8
501-1,000
5
1,001-5,000
3
5,001-10,000
2
10001+
1

Freshness & accuracy

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

Email last verified

Median 14.0d

Company record updated

Median 62.0d

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 enterprise cloud transformation 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 Barcelona, Spain whose own description of what they do matches “enterprise cloud transformation 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 enterprise cloud transformation 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 enterprise cloud transformation firms, and records with no verified work email. Companies headquartered outside Barcelona 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, 3,570 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 12, 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.

Enterprise cloud transformation firms by metro in Spain

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 enterprise cloud transformation 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 enterprise cloud transformation firms are there based in Barcelona, Spain?

RevenueBase identified 265 enterprise cloud transformation firms headquartered in Barcelona, 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 enterprise cloud transformation firms?

Madrid leads with 508 headquartered companies, followed by Barcelona (246) and Valencia (59).

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 3,570 verified decision-maker contacts tracked across these 265 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 12, 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.