Company lists · Data refreshed September 2026
Top 25 Advisory and outsourcing services based in Barcelona, Spain
RevenueBase identified 1,088 advisory and outsourcing services headquartered in Barcelona, Spain as of September 2026 and tracks 13,081 professional contacts across them, including 1,929 with verified work emails. Madrid is the largest hub.
This list covers advisory and outsourcing services 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 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.
The 25 largest advisory and outsourcing services based in Barcelona, Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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, 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 23, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 282 contacts → | ||||
Indirect evidence “At K-LAGAN, we are a strategic consulting company with over 18 years of experience in IT, engineering, electronics, and R&D+i services.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 7 | 203 contacts → | ||||
Indirect evidence “CaixaBank Operational Services es una empresa del Grupo ”la Caixa” que presta servicios a la entidad desde el año 1994, y que desde entonces ha consolidado un proceso de…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 8 | 176 contacts → | ||||
Indirect evidence “En Talenom te ofrecemos servicios de asesoría contable, laboral y legal para que gestiones tu empresa de manera integral y con la tranquilidad de tener a un equipo de expertos a…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 9 | 147 contacts → | ||||
Partial evidence “Bové Montero was founded in 1978 as one of the pioneering firms in Spain in the fields of audit, consulting, and accounting, tax, and labour advisory services.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 10 | 146 contacts → | ||||
Indirect evidence “Ferrer & Ojeda, grupo referente en el asesoramiento y gestión de seguros.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 11 | 143 contacts → | ||||
Indirect evidence “En Talent Search People llevamos más de 20 años ayudando a las organizaciones a atraer, seleccionar y desarrollar el mejor talento.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 12 | 139 contacts → | ||||
Indirect evidence “Daleph es una firma de servicios de consultoría para las administraciones públicas.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 13 | 137 contacts → | ||||
Indirect evidence “En AGM Abogados queremos ser aquello que nuestros clientes esperan de nosotros.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 14 | 123 contacts → | ||||
Indirect evidence “Somos AVINCLA, una firma independiente de servicios profesionales, comprometidos con ofrecer soluciones ágiles y personalizadas para ayudar a nuestros clientes a impulsar su…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 15 | 116 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 16 | 111 contacts → | ||||
Indirect evidence “Criteria is a consulting firm with more than 23 years of experience in the field of human resources.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 17 | 109 contacts → | ||||
Indirect evidence “Solutia es la consultoría que ofrece, a través de sus diferentes marcas, diversas soluciones de alto valor añadido especializadas en Salud.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 18 | 101 contacts → | ||||
Indirect evidence “At Adlanter, we are dedicated to connecting talent with the best opportunities.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 19 | 100 contacts → | ||||
Indirect evidence “Consulting & BPO Services Abinitio offers specialized management services to the customers to help them, from the beginning, to improve their businesses.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 20 | 94 contacts → | ||||
Indirect evidence “Lawyers for Projects nació en 2017 con un propósito claro: aportar más flexibilidad y eficiencia a la abogacía de los negocios, en beneficio de los profesionales y de los clientes.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 21 | 88 contacts → | ||||
Indirect evidence “JDA es un grupo de empresas orientadas a la prestación de servicios profesionales, con asentamiento en la provincia de Barcelona.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 22 | 85 contacts → | ||||
Indirect evidence “ConVista Spain has offices in Madrid and Barcelona and is focused in the areas of Finance, Treasury, Digitalization, Innovation, Process Mining, Insurance and Banking.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 23 | 85 contacts → | ||||
Indirect evidence “Firma líder en servicios de Auditoría y Consultoría, con más de 25 años de experiencia, asumiendo una reconocida especialización en los sectores público y hospitalario, y…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 24 | 77 contacts → | ||||
Indirect evidence “addwill integra a más de 100 profesionales altamente cualificados en las diferentes áreas de la práctica del derecho de empresa y la consultoría financiera para ofrecer un…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 25 | 76 contacts → | ||||
Indirect evidence “Vanadys is a young and dynamic organization managed by a group of professionals with more than 25 years of experience in major IT manufacturers, consulting services companies…” Source: RevenueBase Database · checked Sep 23, 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: 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 1,088 advisory and outsourcing services based in Barcelona, Spain
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Advisory and outsourcing services based in Barcelona, Spain at a glance
As of Sep 23, 2026Companies by employee count
Email recency for this list is measured across the whole Spain list rather than for Barcelona, so it is reported there. Company counts and contact totals on this page are exact for Barcelona, over 1,088 companies.
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 Barcelona, 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 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, 1,929 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 in Spain
- 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 Barcelona, Spain?
RevenueBase identified 1,088 advisory and outsourcing services 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?
Grupo Constant, headquartered in Barcelona, 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 1,929 verified decision-maker contacts tracked across these 1,088 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.
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