Company lists · Data refreshed September 2026
Top 25 Martech stack optimization consultants based in Spain
RevenueBase identified 307 martech stack optimization consultants headquartered in Spain as of September 2026 and tracks 3,076 professional contacts across them, including 326 with verified work emails. Madrid is the largest hub.
This list covers martech stack optimization consultants 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 28, 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 martech stack optimization consultants based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 201 contacts → | ||||
Indirect evidence “En SIDN diseñamos el futuro digital de las marcas transformando el marketing digital a través de la tecnología y la IA.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 125 contacts → | ||||
Indirect evidence “Marketing Consulting firm focused on Customer Experience, providing an innovative, omnichannel and technological vision.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 90 contacts → | ||||
Indirect evidence “Omnitel Comunicaciones nace en 1995 con la vocación de ofrecer soluciones personalizadas en el marco del marketing tanto online como offline, la tecnología, la formación y la…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 61 contacts → | ||||
Indirect evidence “INDI marketers somos un grupo de personas relacionadas con el marketing, periodistas, comunicadores, expertos en imagen y diseño.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 56 contacts → | ||||
Indirect evidence “En Marshals, somos más que una consultora de marketing y ventas digitales; somos tu socio estratégico para la transformación digital de tus procesos o de tu compañía.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Indirect evidence “Necesitas mejorar el rendimiento de tu negocio online?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 46 contacts → | ||||
Indirect evidence “sum (suma | une | mueve) es la compañía que trabaja para empresas con modelos de negocio B2B con el objetivo de mejorar las cifras de la primera línea de la cuenta de resultados.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 42 contacts → | ||||
Indirect evidence “Kapturall is a Marketing Automation Agency dedicated to helping organizations unlock the full potential of their Marketing and Sales technologies.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 42 contacts → | ||||
Indirect evidence “Meydis es una mezcla única de creatividad, consultoría, tecnología, datos, innovación y marketing operacional trabajando juntas para lograr maximizar el retorno de las acciones de…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 41 contacts → | ||||
Indirect evidence “La nueva revolución del Marketing digital, empresa especializada en Consultoría y Auditoría de Marketing Estratégico, Comunicación y Ventas.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 38 contacts → | ||||
Indirect evidence “En Esparta Digital transformamos el potencial de las marcas en progreso real y medible.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 35 contacts → | ||||
Indirect evidence “Marketinet], agencia simbiótica de Marketing Digital.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 32 contacts → | ||||
Indirect evidence “Solid, marketing automation & CRM services para compañías que buscan un partner de alto nivel.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 30 contacts → | ||||
Indirect evidence “Singular Consulting es una empresa de consultoría de negocio especializada en soluciones de Ventas, Marketing, Finanzas, Comunicación, Seguridad, Analítica, Integración y Recursos…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 28 contacts → | ||||
Indirect evidence “Sekuenz Data Driven Seekers es una consultora de marketing digital y tecnología orientada a datos que combina analítica avanzada, estrategia y soluciones digitales para impulsar…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 25 contacts → | ||||
Indirect evidence “Joan Boluda, Consultor de Marketing OnlineEspecializado en Posicionamiento Natural (SEO), Pago Por Clic (PPC), Redes Sociales (SMO) y Email Marketing.Si tienes claro tu plan de…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 21 contacts → | ||||
Partial evidence “IG Martech helps our clients drive transformational growth through integrated, data-driven solutions.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 21 contacts → | ||||
Indirect evidence “The digital solution that you didn't know you needed.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 20 contacts → | ||||
Indirect evidence “LaMagnética guides you through the digital transformation process and in defining your business plan, applying our experience and strategic vision to take full advantage of the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 18 contacts → | ||||
Indirect evidence “Weroi es una firma especializada en marketing comercial-digital centrada en ayudar a empresas industriales, nacionales e internacionales, a enfocar sus inversiones digitales a la…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 contacts → | ||||
Indirect evidence “Impulsa3 es la consultora de tecnología y marketing que ayuda a aumentar las ventas y mejorar la rentabilidad de la inversión online de empresas, tanto pequeñas como…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 17 contacts → | ||||
Indirect evidence “Siempre lo vimos claro: marketing y tecnología no son dos caminos distintos, son la misma carretera.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 contacts → | ||||
Indirect evidence “Linkemann es un “one-stop shop for digital marketing”.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 15 contacts → | ||||
Indirect evidence “Consultora tecnológica, especializada en el marketing digital, ciberseguridad y la gestión de proyectos.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 contacts → | ||||
Indirect evidence “Consultora experta en marketing y estrategia digital.” Source: RevenueBase Database · checked Sep 28, 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: martech stack optimization consultants. 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 martech stack optimization consultants.
- Partial evidence
- Its own public description names part of martech stack optimization consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name martech stack optimization consultants. 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 307 martech stack optimization consultants based in Spain
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 326 reachable decision-makers.
Free signup · no credit card
Martech stack optimization consultants based in Spain at a glance
As of Sep 28, 2026Companies by employee count
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 307 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 martech stack optimization consultants, 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 “martech stack optimization consultants”. 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 martech stack optimization consultants), 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 martech stack optimization consultants, 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, 326 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 28, 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.
Martech stack optimization consultants 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 martech stack optimization consultants, 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 martech stack optimization consultants are there based in Spain?
RevenueBase identified 307 martech stack optimization consultants 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?
SIDN, headquartered in Pozuelo De Alarcon, tops this list with the largest team on record.
Which city has the most martech stack optimization consultants?
Madrid leads with 92 headquartered companies, followed by Barcelona (61) and Valencia (14).
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 326 verified decision-maker contacts tracked across these 307 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 307 martech stack optimization consultants based in Spain. Start with a free account, no credit card.
Download this list →Related lists
Martech stack optimization consultants by geography
- Martech stack optimization consultants based in Brisbane, Australia
- Martech stack optimization consultants based in Melbourne, Australia
- Martech stack optimization consultants based in Sydney, Australia
- Martech stack optimization consultants based in Belo Horizonte, Brazil
- Martech stack optimization consultants based in Curitiba, Brazil
- Martech stack optimization consultants based in Rio De Janeiro, Brazil
- Martech stack optimization consultants based in Sao Paulo, Brazil
- Martech stack optimization consultants based in Calgary, Canada
- Martech stack optimization consultants based in Montreal, Canada
- Martech stack optimization consultants based in Toronto, Canada
- Martech stack optimization consultants based in Vancouver, Canada
- Martech stack optimization consultants based in Paris, France
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Martech stack optimization consultants based in Brisbane, Australia
- Martech stack optimization consultants based in Melbourne, Australia
- Martech stack optimization consultants based in Sydney, Australia
- Martech stack optimization consultants based in Belo Horizonte, Brazil
- Martech stack optimization consultants based in Curitiba, Brazil
- Martech stack optimization consultants based in Rio De Janeiro, Brazil