Company lists · Data refreshed November 2026

Top 24 IT consulting and systems integration companies based in Spain

Name: IT consulting and systems integration companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 2,848 companies tracked

RevenueBase identified 2,848 company matches for IT consulting and systems integration companies associated with Spain as of November 2026 and tracks 136,348 professional contacts across them, including 22,635 with verified work emails. Madrid is the largest hub.

This list covers company matches for IT consulting and systems integration companies associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

2,848Companies

136,348Contacts tracked

22,635Verified emails

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The 24 largest IT consulting and systems integration companies based in Spain

Ranked by team size

Top 24 of 2,848 company matches for IT consulting and systems integration companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Seidor	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	5,001-10,000	7,012 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Viewnext	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	3,938 contacts →
	Exact match “Viewnext es una empresa de Servicios de Consultoría Tecnológica y Transformación Digital perteneciente al grupo IBM en España.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	GMV	Exact match	Tres Cantos, SpainHQ recorded Nov 6, 2026	1,001-5,000	3,622 contacts →
	Exact match “At GMV, we design the future through technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Hiberus	Exact match	Zaragoza, SpainHQ recorded Nov 6, 2026	1,001-5,000	3,518 contacts →
	Exact match “Somos una compañía especializada en TIC, consultoría tecnológica y transformación digital.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	T-Systems Iberia	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	1,001-5,000	2,669 contacts →
	Exact match “En T-Systems, encontrarás proyectos rompedores que suman al bienestar social y ecológico.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Alten Spain	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	2,106 contacts →
	Exact match “ALTEN es una multinacional europea especializada en proporcionar servicios de consultoría, tecnologías de la información y servicios de ingeniería a las principales compañías del…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Entelgy	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,657 contacts →
	Exact match “Somos Entelgy,#TheBusinessTechConsultancy, un acelerador de la transformación para quienes necesitan seguir siendo competitivos en un mundo cambiante a gran velocidad.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	SICE	Exact match	Alcobendas, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,450 contacts →
	Exact match “Sociedad Ibérica de Construcciones Eléctricas (SICE) is a multinational company integrating systems, aimed at solving market needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	SATEC	Exact match	Pozuelo De Alarcón, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,203 contacts →
	Exact match “Since 1988, SATEC is a global system integrator that was born in the supercomputing ecosystem.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Capitole	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,170 contacts →
	Exact match “Who are we?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Zelenza	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	1,164 contacts →
	Exact match “En Zelenza somos líderes en servicios integrados TIC, Ingeniería de Redes Telco, Defensa y Seguridad y Customer Experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Teknei	Exact match	Bilbao, SpainHQ recorded Nov 6, 2026	1,001-5,000	953 contacts →
	Exact match “Grupo Teknei es una empresa líder en el sector tecnológico, especializada en la consultoría, desarrollo de software y soluciones IT.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Soaint	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	501-1,000	876 contacts →
	Exact match “SOAINT is a global company with presence in 10 countries and nearly 800 people.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Nunsys	Exact match	Paterna, SpainHQ recorded Nov 6, 2026	1,001-5,000	810 contacts →
	Exact match “NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	SII Group Spain	Exact match	L’hospitalet De Llobregat, SpainHQ recorded Nov 6, 2026	10001+	729 contacts →
	Exact match “En SII Group Spain respondemos a las necesidades de diversas industrias a través de Servicios y Soluciones Digitales, IT e Ingeniería, con presencia en sectores estratégicos como…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Axpe Consulting	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	675 contacts →
	Exact match “AXPE CONSULTING S.L.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Sothis	Exact match	Parque Tecnológico De Paterna, SpainHQ recorded Nov 6, 2026	501-1,000	674 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Logicalis Spain	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	501-1,000	598 contacts →
	Exact match “Logicalis es una compañía de referencia tanto en España como en los países en los que opera.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Grupo Versia	Exact match	Barakaldo, SpainHQ recorded Nov 6, 2026	501-1,000	522 contacts →
	Exact match “Grupo Versia es una compañía dedicada a la mejora de procesos de negocio de sus clientes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Optimissa	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	510 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Grupo Solutia	Exact match	Seville, SpainHQ recorded Nov 6, 2026	501-1,000	504 contacts →
	Exact match “Desde julio de 2025, Grupo Solutia forma parte de Bechtle Group, líder europeo en soluciones y servicios TIC.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	SIRT	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	201-500	495 contacts →
	Exact match “Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Aubay Spain	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	5,001-10,000	474 contacts →
	Exact match “Aubay es una empresa de consultoría y servicios informáticos fundada en 1998 en Francia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Experis España	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	1,001-5,000	456 contacts →
	Exact match “Experis es referente global en la selección de profesionales IT, y consultoría tecnológica para la implementación de proyectos y servicios gestionados.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “IT consulting and systems integration companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 24 of 2,848 IT consulting and systems integration companies based in Spain

See the full list, filter by size, metro and specialty, and access 22,635 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT consulting and systems integration companies based in Spain at a glance

As of Nov 6, 2026

16.6%Verified-email coverage

47.9Average contacts per company

1-10Median size (employees)

24.3%Largest-city concentration · Madrid

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

1,473

11-50

880

51-200

299

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 2,848 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Spain whose business descriptions match “IT consulting and systems integration companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 22,635 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

IT consulting and systems integration companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT consulting and systems integration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT consulting and systems integration companies are there based in Spain?

RevenueBase identified 2,848 company matches for IT consulting and systems integration companies associated with Spain as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Seidor tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT consulting and systems integration companies?

Madrid leads with 693 company records, followed by Barcelona (363) and Valencia (84).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 22,635 professional contacts with verified work emails tracked across these 2,848 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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.