Company lists · Data refreshed September 2026
Top 25 IT outsourcing services based in Spain
RevenueBase identified 744 IT outsourcing services headquartered in Spain as of September 2026 and tracks 16,277 professional contacts across them, including 1,679 with verified work emails and 159 with mobile numbers. Madrid is the largest hub.
This list covers IT outsourcing services 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 27, 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.
The 25 largest IT outsourcing services based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,958 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,007 contacts → | ||||
Partial evidence “Specialized services in order to provide to other companies outsourcing for activities, improving its performance and cost.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 460 contacts → | ||||
Partial evidence “Staff Global Group is a group specialised in comprehensive staff outsourcing services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 430 contacts → | ||||
Indirect evidence “Aubay es una empresa de consultoría y servicios informáticos fundada en 1998 en Francia.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 391 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 364 contacts → | ||||
Indirect evidence “No dejes de perseguir tus sueños.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 305 contacts → | ||||
Partial evidence “The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 256 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 221 contacts → | ||||
Partial evidence “Fundada en 1995, SEREM Consultoría Empresarial es una firma de capital íntegramente nacional dedicada a servicios de tecnologías de información (IT).” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 221 contacts → | ||||
Indirect evidence “We are a multinational company founded in Spain with locations in Colombia, Chile, Panama, Mexico, Peru, Canada, and Morocco.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 215 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 192 contacts → | ||||
Partial evidence “Bukit BPO es una compañía internacional dedicada al negocio del Business Process Outsourcing y que actúa como partner tecnológico y operacional para clientes de todo el mundo.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 188 contacts → | ||||
Indirect evidence “Trevenque Sistemas de Información nace en 1992 con el principal reto de convertirse en uno de los primeros grupos empresariales, capaz de ayudar a las empresas a mejorar sus…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 177 contacts → | ||||
Indirect evidence “es una ó, ayudamos a nuestros clientes a resolver sus principales retos en el campo de las tecnologías de la información.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 172 contacts → | ||||
Indirect evidence “FULL ON NET es una empresa altamente especializada en desarrollos y servicios dentro del entorno tecnológico de Internet y las Telecomunicaciones, dirigida e integrada por…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 169 contacts → | ||||
Indirect evidence “Grupo Arelance es una consultora tecnológica especializada en el desarrollo y puesta en marcha de soluciones integrales y Soporte a Proyectos en el ámbito de las Tecnologías de la…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 162 contacts → | ||||
Partial evidence “El Grupo AirON es una compañía de consultoría e innovación, servicios tecnológicos y outsourcing.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 158 contacts → | ||||
Partial evidence “DOCOUT somos una compañia española especializada en suministrar servicios de Outsourcing integral mediante el uso de la tecnología.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 155 contacts → | ||||
Indirect evidence “INNOCV es una empresa sostenible que se diferencia por poner a las personas en el centro de sus decisiones, mejoramos cada año la calidad de vida de los que trabajamos en ella…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 133 contacts → | ||||
Indirect evidence “WE ARE SANDAV A unique service company, with a technological soul.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 122 contacts → | ||||
Indirect evidence “Grupo Solutio, compañía del sector TI con sedes en España (Madrid, Barcelona, A Coruña) y México (México DF).” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 111 contacts → | ||||
Partial evidence “Empresa dedicada al outsourcing de servicios de alta calidad.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 109 contacts → | ||||
Partial evidence “Somos una empresa multinacional líder en el mercado de Consultoría y Desarrollo de Soluciones IT.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 108 contacts → | ||||
Indirect evidence “Dimática, empresa del Grupo Sermicro (perteneciente a Cobra IS), está especializada en distíntas líneas de negocio.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 107 contacts → | ||||
Indirect evidence “Cada día nos esforzamos por transformar y optimizar organizaciones mediante la implementación de soluciones tecnológicas seguras, eficientes y vanguardistas, evolucionamos contigo…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: IT outsourcing services. 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 IT outsourcing services.
- Partial evidence
- Its own public description names part of IT outsourcing services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT outsourcing services. 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 744 IT outsourcing services based in Spain
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IT outsourcing services based in Spain at a glance
As of Sep 27, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 29.0dCompany record updated
Median 92.0dHow 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 outsourcing services, 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 “IT outsourcing services”. 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 IT outsourcing services), 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 IT outsourcing services, 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, 1,679 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 27, 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 outsourcing services 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 IT outsourcing services, 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 IT outsourcing services are there based in Spain?
RevenueBase identified 744 IT outsourcing services 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 Madrid, tops this list with the largest team on record.
Which city has the most IT outsourcing services?
Madrid leads with 195 headquartered companies, followed by Barcelona (93) and Valencia (25).
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 1,679 verified decision-maker contacts tracked across these 744 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 27, 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.
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