Company lists · Data refreshed September 2026

Top 24 IT services companies based in Spain

Name: IT services companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 1,745 companies tracked

RevenueBase identified 1,745 IT services companies headquartered in Spain as of September 2026 and tracks 76,528 professional contacts across them, including 11,196 with verified work emails and 1,373 with mobile numbers. Madrid is the largest hub.

This list covers IT services companies 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, 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

1,745Companies

76,528Contacts tracked

11,196Verified emails

1,373Mobile numbers

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The 24 largest IT services companies based in Spain

Ranked by team size

Top 24 of 1,745 IT services companies based in Spain, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT services companies: 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	Alten SpainIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	1,001-5,000	1,950
	“ALTEN es una multinacional europea especializada en proporcionar servicios de consultoría, tecnologías de la información y servicios de ingeniería a las principales compañías del…” Source: company website · checked Sep 4, 2026
2	SICEIndirect evidence	Alcobendas, SpainHQ checked Sep 4, 2026	1,001-5,000	1,312
	“Sociedad Ibérica de Construcciones Eléctricas (SICE) is a multinational company integrating systems, aimed at solving market needs.” Source: company website · checked Sep 4, 2026
3	SothisIndirect evidence	Parque Tecnológico De Paterna, SpainHQ checked Sep 4, 2026	501-1,000	678
	“Sothis was founded in 2008 in order to lead a change in the way we offer information technology services, with a clear vision on the impact that technology can have on our…” Source: company website · checked Sep 4, 2026
4	OptimissaIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	1,001-5,000	527
	“Optimissa is a proactive consultation company serving clients in the capital markets industry, bridging the gap between business and technology with a focus on innovation.” Source: company website · checked Sep 4, 2026
5	Grupo SolutiaIndirect evidence	Sevilla, SpainHQ checked Sep 4, 2026	501-1,000	464
	“Desde julio de 2025, Grupo Solutia forma parte de Bechtle Group, líder europeo en soluciones y servicios TIC.” Source: company website · checked Sep 4, 2026
6	SIRTIndirect evidence	Barcelona, SpainHQ checked Sep 4, 2026	201-500	441
	“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: company website · checked Sep 4, 2026
7	Aubay SpainIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	5,001-10,000	428
	“Aubay es una empresa de consultoría y servicios informáticos fundada en 1998 en Francia.” Source: company website · checked Sep 4, 2026
8	SEMICIndirect evidence	Lleida, SpainHQ checked Sep 4, 2026	201-500	391
	“Somos una empresa de servicios y soluciones TI de valor, basadas en el conocimiento, la seguridad y la sostenibilidad.” Source: company website · checked Sep 4, 2026
9	AtsistemasStrong evidence	Madrid, SpainHQ checked Sep 4, 2026	1,001-5,000	391
	“With about 2200 experts atSistemas delivers IT consulting, services and software development which to help organizations to be more efficient and profitable.” Source: company website · checked Sep 4, 2026
10	ABASTIndirect evidence	Barcelona, SpainHQ checked Sep 4, 2026	501-1,000	386
	“Somos una compañía independiente con más de 30 años en el mercado Español implantando soluciones tecnológicas completas, innovadoras y estratégicas para nuestros clientes.” Source: company website · checked Sep 4, 2026
11	IRIUMIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	501-1,000	363
	“No dejes de perseguir tus sueños.” Source: company website · checked Sep 4, 2026
12	Grupo Tecdata EngineeringIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	201-500	347
	“TECDATA, es una dinámica compañía de servicios en Tecnologías de la Información con infraestructura propia en España, ofreciendo servicios profesionales y soluciones tecnológicas…” Source: company website · checked Sep 4, 2026
13	ExceliaIndirect evidence	Pozuelo De Alarcón, SpainHQ checked Sep 4, 2026	201-500	312
	“We are a global consulting, technology, and professional services firm with over 25 years of experience.” Source: company website · checked Sep 4, 2026
14	Panel Sistemas InformaticosStrong evidence	Madrid, SpainHQ checked Sep 4, 2026	201-500	303
	“Panel Systems is a technology company specialized in software development, software quality assurance, and IT services.” Source: company website · checked Sep 4, 2026
15	Ferchau Spain S.L.UIndirect evidence	Getafe, SpainHQ checked Sep 4, 2026	5,001-10,000	272
	“At FERCHAU, we view ourselves as one of the leading platforms for prime technology services in Europe.” Source: company website · checked Sep 4, 2026
16	CoremainIndirect evidence	Santiago De Compostela, SpainHQ checked Sep 4, 2026	201-500	256
	“Coremain es un proveedor independiente de servicios de Tecnologías de la Información y Comunicaciones con un alto valor añadido: más de 400 profesionales comprometidos con las…” Source: company website · checked Sep 4, 2026
17	Bahia SoftwareIndirect evidence	Ames, SpainHQ checked Sep 4, 2026	201-500	252
	“BAHIA SOFTWARE es una empresa creada en por profesionales con amplia experiencia en el sector de la Consultoría y Tecnologías de la Información y con un gran conocimiento del…” Source: company website · checked Sep 4, 2026
18	NextretIndirect evidence	Barcelona, SpainHQ checked Sep 4, 2026	201-500	236
	“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: company website · checked Sep 4, 2026
19	EDISAIndirect evidence	San Cibrao Das Viñas, SpainHQ checked Sep 4, 2026	201-500	227
	“EDISA es una empresa fundada en el año 1983 centrada en la integración de sistemas basados en las últimas Tecnologías de la Información, así como en el desarrollo e implantación…” Source: company website · checked Sep 4, 2026
20	Serem Consultoría EmpresarialStrong evidence	Madrid, SpainHQ checked Sep 4, 2026	501-1,000	220
	“Fundada en 1995, SEREM Consultoría Empresarial es una firma de capital íntegramente nacional dedicada a servicios de tecnologías de información (IT).” Source: company website · checked Sep 4, 2026
21	LognextStrong evidence	Madrid, SpainHQ checked Sep 4, 2026	201-500	214
	“With more than 17 years of experience and trajectory in the IT world, LOGNEXT offers solutions to our clients and professional careers to our consultants in technology projects…” Source: company website · checked Sep 4, 2026
22	SosmaticIndirect evidence	Barcelona, SpainHQ checked Sep 4, 2026	201-500	209
	“We help large private groups, companies in all sectors and sizes, and CIOS/CTOs, with their support needs in digital technologies.” Source: company website · checked Sep 4, 2026
23	Centro Regional DE Servicios Avanzados, S.A. CSAIndirect evidence	Burgos, SpainHQ checked Sep 4, 2026	201-500	198
	“CSA was founded in 1996.” Source: company website · checked Sep 4, 2026
24	CAS TrainingIndirect evidence	Madrid, SpainHQ checked Sep 4, 2026	201-500	197
	“CAS constituye una empresa de referencia, especializada en ofrecer soluciones de Formación y servicios de Consultoría y Outsourcing de profesionales en el ámbito de las TIC.” Source: company website · checked Sep 4, 2026

Showing 24 of 1,745 IT services companies based in Spain

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IT services companies based in Spain at a glance

As of Sep 4, 2026

1-10Median size (employees)

MadridLargest hub · 347 HQs

1,373Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

1,059

11-50

437

51-200

143

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

844

61–90

6,185

90–180

4,041

180+

126

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 services companies, 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 Spain whose own description of what they do matches “IT services companies”. 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 services companies, 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 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, 11,196 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 services companies by metro

Frequently asked

How many IT services companies are there based in Spain?

RevenueBase identified 1,745 IT services companies 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?

Alten Spain, headquartered in Spain, tops this list with the largest team on record.

Which city has the most IT services companies?

Madrid leads with 347 headquartered companies, followed by Barcelona (188) and Valencia (48).

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 11,196 verified decision-maker contacts tracked across these 1,745 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.