Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in Spain

Name: Advisory and outsourcing services based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 8,452 companies tracked

RevenueBase identified 8,452 advisory and outsourcing services headquartered in Spain as of September 2026 and tracks 141,279 professional contacts across them, including 9,236 with verified work emails and 2,324 with mobile numbers. Madrid is the largest hub.

This list covers advisory and 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 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

8,452Companies

141,279Contacts tracked

9,236Verified emails

2,324Mobile numbers

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The 25 largest advisory and outsourcing services based in Spain

Ranked by team size

Top 25 of 8,452 advisory and outsourcing services 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 advisory and outsourcing services: 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	Autonomo	Indirect evidence	Córdoba, SpainHQ checked Sep 23, 2026	n/a	23,018 contacts →
	Indirect evidence “Calidad y Gestión es una empresa consultora de ámbito internacional especializada en servicios de asesoría en las siguientes áreas: Calidad Medio Ambiente Responsabilidad social…” Source: RevenueBase Database · checked Sep 23, 2026
2	Kpmg España	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	5,001-10,000	5,114 contacts →
	Indirect evidence “KPMG en España es una firma de servicios profesionales que ofrece servicios de auditoría, fiscales y de asesoramiento legal, financiero y de negocio con más de 2.700 profesionales…” Source: RevenueBase Database · checked Sep 23, 2026
3	Management Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	4,468 contacts →
	Indirect evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 23, 2026
4	Garrigues	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	2,853 contacts →
	Indirect evidence “Garrigues is an international legal and tax services firm that advises clients locally, regionally and globally from every angle of business law.” Source: RevenueBase Database · checked Sep 23, 2026
5	OVB Allfinanz España	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	501-1,000	2,808 contacts →
	Indirect evidence “El grupo OVB, es una compañía líder en asesoramiento financiero en Europa.” Source: RevenueBase Database · checked Sep 23, 2026
6	Marktel	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	5,001-10,000	1,447 contacts →
	Indirect evidence “Grupo Marktel es un grupo empresarial que ofrece soluciones globales a sus clientes en el ámbito de la externalziación de servicios con el máximo nivel de especialización en las…” Source: RevenueBase Database · checked Sep 23, 2026
7	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
8	WIPRO	Indirect evidence	Valencia, SpainHQ checked Sep 23, 2026	n/a	1,097 contacts →
	Indirect evidence “En Wipro impulsamos el progreso.” Source: RevenueBase Database · checked Sep 23, 2026
9	Inelcom, Ingeniería Electrónica Comercial	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 23, 2026	1,001-5,000	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 23, 2026
10	BDO Spain	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	977 contacts →
	Indirect evidence “BDO es una de las mayores firmas globales de servicios profesionales.” Source: RevenueBase Database · checked Sep 23, 2026
11	Grant Thornton España	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	501-1,000	890 contacts →
	Indirect evidence “En Grant Thornton España ayudamos a que tu empresa vaya más allá.” Source: RevenueBase Database · checked Sep 23, 2026
12	Cibergestión	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	850 contacts →
	Indirect evidence “Nos especializamos en la externalización de servicios a entidades financieras y nos reinventamos continuamente en un mercado cada vez más competitivo para lograr lo más…” Source: RevenueBase Database · checked Sep 23, 2026
13	Grupo Constant	Partial evidence	Barcelona, SpainHQ checked Sep 23, 2026	1,001-5,000	805 contacts →
	Partial evidence “Grupo Constant es una organización líder en soluciones de outsourcing, facilities y ETT, con más de 30 años de experiencia en el área de Recursos Humanos.” Source: RevenueBase Database · checked Sep 23, 2026
14	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
15	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
16	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
17	Staff Global Group	Partial evidence	Barcelona, SpainHQ checked Sep 23, 2026	51-200	460 contacts →
	Partial evidence “Staff Global Group is a group specialised in comprehensive staff outsourcing services.” Source: RevenueBase Database · checked Sep 23, 2026
18	Aubay Spain	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	5,001-10,000	430 contacts →
	Indirect evidence “Aubay es una empresa de consultoría y servicios informáticos fundada en 1998 en Francia.” Source: RevenueBase Database · checked Sep 23, 2026
19	Diagonal Gest, SL	Indirect evidence	Barcelona, SpainHQ checked Sep 23, 2026	501-1,000	418 contacts →
	Indirect evidence “Tessi IBERIA nace en 1.997 y aunque en el inicio se centra en la gestión hipotecaria, ya desde sus orígenes nace con unos valores fundamentales, que todavía hoy perviven, y…” Source: RevenueBase Database · checked Sep 23, 2026
20	AFI	Partial evidence	Madrid, SpainHQ checked Sep 23, 2026	201-500	417 contacts →
	Partial evidence “Afi is a leading Spanish company in advisory, consulting and independent training in economics, finance and technology.” Source: RevenueBase Database · checked Sep 23, 2026
21	Crowe Spain	Indirect evidence	Barcelona, SpainHQ checked Sep 23, 2026	501-1,000	399 contacts →
	Indirect evidence “Crowe Global es una de las diez primeras firmas de servicios profesionales del mundo, con cerca de 200 firmas de auditoría y consultoría, y legal y tributario, presente en más de…” Source: RevenueBase Database · checked Sep 23, 2026
22	Atsistemas	Indirect evidence	Las Rozas, SpainHQ checked Sep 23, 2026	1,001-5,000	391 contacts →
	Indirect 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
23	CE Consulting Empresarial	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	501-1,000	345 contacts →
	Indirect evidence “CE Consulting Empresarial es la mayor red en volumen de asesorías y líder en España: Somos más de 150 asesorías nacionales e internacionales, que ofrecen servicios de asesoría…” Source: RevenueBase Database · checked Sep 23, 2026
24	Grupo Bcmgestionarte	Partial evidence	Málaga, SpainHQ checked Sep 23, 2026	1,001-5,000	306 contacts →
	Partial evidence “Grupo BCMGestionARTE es una corporación empresarial compuesta por empresas especializadas en la gestión integral y el Outsourcing de capital humano.” Source: RevenueBase Database · checked Sep 23, 2026
25	Afianza	Indirect evidence	Madrid, SpainHQ checked Sep 23, 2026	1,001-5,000	305 contacts →
	Indirect evidence “Afianza nace en 2002 de la mano de nuestro fundador, José Luis Cogolludo.” 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: advisory and 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 advisory and outsourcing services.
Partial evidence: Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory and 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 8,452 advisory and outsourcing services based in Spain

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Advisory and outsourcing services based in Spain at a glance

As of Sep 23, 2026

6.5%Verified-email coverage

1.6%Mobile-number coverage

16.7Average contacts per company

1-10Median size (employees)

21.3%Largest-city concentration · Madrid

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

5,763

11-50

2,161

51-200

323

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

7,0440–30

1,97531–60

11461–90

390–180

109180+

Company record updated

Median 88.0d

00–30

31,79631–60

59,22561–90

45,16890–180

5,376180+

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 advisory and 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 “advisory and 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 advisory and 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 advisory and 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, 9,236 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.

Advisory and outsourcing services by metro

Advisory and outsourcing services in Madrid1804
Advisory and outsourcing services in Barcelona1088
Advisory and outsourcing services in Valencia313
Advisory and outsourcing services in Sevilla195
Advisory and outsourcing services in Malaga170
Advisory and outsourcing services in Zaragoza135
Advisory and outsourcing services in Bilbao121
Advisory and outsourcing services in Murcia121
Advisory and outsourcing services in Alicante114
Advisory and outsourcing services in Vigo101
Advisory and outsourcing services in A Coruna73
Advisory and outsourcing services in Granada71
Advisory and outsourcing services in Valladolid68
Advisory and outsourcing services in Girona62
Advisory and outsourcing services in Cordoba59
Advisory and outsourcing services in Santa Cruz De Tenerife59
Advisory and outsourcing services in Las Palmas De Gran Canaria57
Advisory and outsourcing services in Palma De Mallorca56
Advisory and outsourcing services in Sant Cugat Del Valles50
Advisory and outsourcing services in Marbella49
Advisory and outsourcing services in Terrassa49
Advisory and outsourcing services in Gijon44
Advisory and outsourcing services in Sabadell44
Advisory and outsourcing services in Lleida41
Advisory and outsourcing services in Oviedo41
Advisory and outsourcing services in Almeria38
Advisory and outsourcing services in Palma38
Advisory and outsourcing services in Elche37
Advisory and outsourcing services in Seville37
Advisory and outsourcing services in Santiago De Compostela36
Advisory and outsourcing services in Santander35
Advisory and outsourcing services in Pozuelo De Alarcon34
Advisory and outsourcing services in Mataro33
Advisory and outsourcing services in Badalona28
Advisory and outsourcing services in Badajoz27
Advisory and outsourcing services in Caceres27
Advisory and outsourcing services in Tarragona27
Advisory and outsourcing services in Alcobendas26
Advisory and outsourcing services in Las Rozas De Madrid26
Advisory and outsourcing services in Leon26
Advisory and outsourcing services in Logrono26
Advisory and outsourcing services in San Sebastian26
Advisory and outsourcing services in Albacete25
Advisory and outsourcing services in Castellon De La Plana25

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 advisory and 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 advisory and outsourcing services are there based in Spain?

RevenueBase identified 8,452 advisory and 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?

Autonomo, headquartered in Cordoba, tops this list with the largest team on record.

Which city has the most advisory and outsourcing services?

Madrid leads with 1804 headquartered companies, followed by Barcelona (1088) and Valencia (313).

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 9,236 verified decision-maker contacts tracked across these 8,452 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.