Company lists · Data refreshed November 2026

Top 25 Legacy system migration consultants based in Spain

RevenueBase identified 193 company matches for legacy system migration consultants associated with Spain as of November 2026 and tracks 4,053 professional contacts across them, including 626 with verified work emails. Madrid is the largest hub.

This list covers company matches for legacy system migration consultants 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
193Companies
4,053Contacts tracked
626Verified emails
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The 25 largest legacy system migration consultants based in Spain

Ranked by team size
Top 25 of 193 company matches for legacy system migration consultants 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBarcelona, SpainHQ recorded Nov 6, 2026201-500495 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
2Exact matchLas Rozas, SpainHQ recorded Nov 6, 20261,001-5,000364 contacts →

Exact match

“With about 2200 experts atSistemas delivers IT consulting, services and software development which to help organizations to be more efficient and profitable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLlanera, SpainHQ recorded Nov 6, 2026201-500214 contacts →

Exact match

“En LIDER IT Consulting llevamos más de 40 años ayudando a nuestros clientes a mejorar la gestión mediante la consultoría, el desarrollo y la implantación de soluciones integradas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchValencia, SpainHQ recorded Nov 6, 202651-200211 contacts →

Exact match

“DISID is a technology consulting company that carries out Digital Transformation projects following a model of technological partner, we help our clients with the latest…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-200141 contacts →

Exact match

“Aktios nace en 2013 con el objetivo de convertir la complejidad tecnológica en crecimiento real de negocio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Cada día nos esforzamos por transformar y optimizar organizaciones mediante la implementación de soluciones tecnológicas seguras, eficientes y vanguardistas, evolucionamos contigo…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“ARENA Consulting es una empresa especializada en Tecnologías de la Información, que ofrece servicios de Consultoría, Desarrollo de Aplicaciones, Soporte y Administración de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Nov 6, 2026201-50067 contacts →

Exact match

“Somos una consultora de tecnología de la información que transforma negocios mediante soluciones innovadoras y personalizadas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBilbao, SpainHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“Ecna Informática es una Ingeniería de Software, cuyo propósito es ayudar a tu compañía a diseñar e implantar Sistemas de Información, convirtiéndose en el partner tecnológico que…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Tu tecnología impulsa tu negocio o lo frena?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“The world changes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchZaragoza, SpainHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Somos un equipo dinámico y flexible especializado en consultoría de negocio, tecnológica, organización y optimización de procesos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“Konozca Consultoría Tecnológica Estratégica, especializada en ayudar a las empresas a obtener Valor y Ventaja Competitiva a través de los Sistemas Informáticos Ofrece también…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Nov 6, 2026201-50035 contacts →

Exact match

“Ponemos recursos tecnológicos a su alcance, porque sabemos que la tecnología es clave en el desarrollo, consolidación y crecimiento empresarial.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“En Constellation Consulting Ibérica, nos dedicamos a optimizar los procesos empresariales en todas las etapas de tus ventas y operaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchZaragoza, SpainHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Somos una consultora especializada en el desarrollo y puesta en marcha de soluciones tecnológicas que ayudan a nuestros clientes a transformar y mejorar su actividad.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCampanillas, SpainHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“Inerttia | Tecnología alineada con los objetivos de tu negocio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20026 contacts →

Exact match

“Grupo SAME (C.B.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Atlas Proyectos Informáticos nace en 1995, con una vocación clara, garantizar la calidad del servicio y la cercanía a sus clientes, buscando siempre la excelencia en nuestras…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDonostia, SpainHQ recorded Nov 6, 202651-20024 contacts →

Exact match

“IT Consulting - Software development”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSanta Cruz De Bezana, SpainHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“We are an IT solutions consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“En TARTIS, nos dedicamos al diseño e implementación de soluciones digitales para empresas de todos los tamaños y sectores.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLleida, SpainHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“En Actium Digital impulsamos a las empresas en su Transformación Digital, combinando consultoría estratégica y soluciones tecnológicas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Somos expertos en el desarrollo de aplicaciones utilizando tecnología de Microsoft.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchTarrasa, SpainHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Empresa joven, creada en el año 2014, formada por profesionales seniors, con amplia experiencia en la gestión y dirección de grandes proyectos informáticos en el sector financiero…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 193 legacy system migration consultants based in Spain

See the full list, filter by size, metro and specialty, and access 626 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy system migration consultants based in Spain at a glance

As of Nov 6, 2026
15.4%Verified-email coverage
21.0Average contacts per company
1-10Median size (employees)
24.9%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
110
11-50
52
51-200
23
201-500
6
1,001-5,000
2

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 193 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 “legacy system migration consultants” 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 626 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.

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 “legacy system migration consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system migration consultants are there based in Spain?

RevenueBase identified 193 company matches for legacy system migration consultants 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?

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

Which city has the most legacy system migration consultants?

Madrid leads with 48 company records, followed by Barcelona (32) and Valencia (7).

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 626 professional contacts with verified work emails tracked across these 193 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.