Company lists · Data refreshed September 2026
Top 25 Legacy system modernization companies based in Spain
RevenueBase identified 785 company matches for legacy system modernization companies associated with Spain as of September 2026 and tracks 32,709 professional contacts across them, including 6,101 with verified work emails. Madrid is the largest hub.
This list covers company matches for legacy system modernization companies 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 September 20, 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.
The 25 largest legacy system modernization companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,133 contacts → | ||||
Exact match “At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 2,292 contacts → | ||||
Exact match “VASS is a global technology company specialized in generating business value through intelligent (digital) transformation, integrating technology, data, artificial intelligence…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 2,027 contacts → | ||||
Exact match “We are knowmad mood!(formerly atSistemas).” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 1,636 contacts → | ||||
Exact match “We are a multinational company specialized in different leading technology platforms such as SAP, Salesforce, Microsoft, OpenText and other software providers that are part of our…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 1,541 contacts → | ||||
Exact match “Somos Entelgy,#TheBusinessTechConsultancy, un acelerador de la transformación para quienes necesitan seguir siendo competitivos en un mundo cambiante a gran velocidad.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 720 contacts → | ||||
Exact match “Grupo Teknei es una empresa líder en el sector tecnológico, especializada en la consultoría, desarrollo de software y soluciones IT.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 434 contacts → | ||||
Exact match “Experis es referente global en la selección de profesionales IT, y consultoría tecnológica para la implementación de proyectos y servicios gestionados.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 391 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 375 contacts → | ||||
Exact match “We are a technology consulting company, formed by different benchmark brands, which creates, through specialization in areas and technological and strategic divisions, an…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 370 contacts → | ||||
Exact match “Vector ITC, a Softtek Company, es un grupo tecnológico y digital internacional.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 342 contacts → | ||||
Exact match “Are you Ready?” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 317 contacts → | ||||
Exact match “We are a global consulting, technology, and professional services firm with over 25 years of experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 309 contacts → | ||||
Exact match “VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 304 contacts → | ||||
Exact match “Panel Systems is a technology company specialized in software development, software quality assurance, and IT services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 292 contacts → | ||||
Exact match “BIP es una consultora internacional especializada, desde su fundación en 2003, en facilitar la transformación end-to-end de los negocios de sus clientes, donde “hacemos que las…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 284 contacts → | ||||
Exact match “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 272 contacts → | ||||
Exact match “We are specialists in guiding our customers through the digital transformation process.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 237 contacts → | ||||
Exact match “Profile Software Services is a software architecture and development company, made up of more than 140 people, experts in Software Architecture, Web and Mobile Developement, Cloud…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 223 contacts → | ||||
Exact match “We are a company specialising in the delivery of best-in-class technology and digital transformation services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 209 contacts → | ||||
Exact match “TERALCO GROUP es un referente de desarrollo tecnológico que impulsa la transformación digital de tu empresa aportando soluciones a medida y creando ventajas competitivas, basadas…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 204 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 203 contacts → | ||||
Exact match “Corus es una consultora tecnológica y de negocio con más de 20 años de experiencia en el sector, con más de 400 profesionales trabajando en proyectos nacionales e internacionales…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 199 contacts → | ||||
Exact match “IFR Group is a consultancy founded in 1985 that supports companies in transforming their management, offering solutions that integrate technology, sector expertise, and a vision…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 189 contacts → | ||||
Exact match “Atlantis Technology es una empresa con sede en Gran Canaria y Tenerife.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 187 contacts → | ||||
Exact match “Tribeca_Media es el hub de comunicación y transformación digital que necesitas para tu empresa: • Generamos nuevas experiencias para tu cliente • Aportamos una ventaja competitiva…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “legacy system modernization companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 785 legacy system modernization companies based in Spain
See the full list, filter by size, metro and specialty, and access 6,101 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Legacy system modernization companies based in Spain at a glance
As of Sep 20, 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 785 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 modernization companies” 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 6,101 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 September 20, 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.
Legacy system modernization companies by metro
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 modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many legacy system modernization companies are there based in Spain?
RevenueBase identified 785 company matches for legacy system modernization companies associated with Spain as of September 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?
Seidor tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most legacy system modernization companies?
Madrid leads with 251 company records, followed by Barcelona (118) and Valencia (26).
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 6,101 professional contacts with verified work emails tracked across these 785 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 September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 785 legacy system modernization companies based in Spain. Start with a free account, no credit card.
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Legacy system modernization companies by geography
- Legacy system modernization companies based in Brisbane, Australia
- Legacy system modernization companies based in Melbourne, Australia
- Legacy system modernization companies based in Perth, Australia
- Legacy system modernization companies based in Sydney, Australia
- Legacy system modernization companies based in Barueri, Brazil
- Legacy system modernization companies based in Belo Horizonte, Brazil
- Legacy system modernization companies based in Campinas, Brazil
- Legacy system modernization companies based in Curitiba, Brazil
- Legacy system modernization companies based in Rio De Janeiro, Brazil
- Legacy system modernization companies based in Sao Paulo, Brazil
- Legacy system modernization companies based in Calgary, Canada
- Legacy system modernization companies based in Mississauga, Canada
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Legacy system modernization companies based in Brisbane, Australia
- Legacy system modernization companies based in Melbourne, Australia
- Legacy system modernization companies based in Perth, Australia
- Legacy system modernization companies based in Sydney, Australia
- Legacy system modernization companies based in Barueri, Brazil
- Legacy system modernization companies based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 legacy system modernization companies based in Spain
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 785 matching company records for legacy system modernization companies based in Spain, with 32,709 tracked contacts and 6,101 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 legacy system modernization companies based in Spain
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Seidorseidor.comHQ: Barcelona, SpainReported employees: 5,001-10,000 | Barcelona, Spain | 5,001-10,000 | Exact match | 6,133 contacts → |
“At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  VASSvasscompany.comHQ: Alcobendas, SpainReported employees: 1,001-5,000 | Alcobendas, Spain | 1,001-5,000 | Exact match | 2,292 contacts → |
“VASS is a global technology company specialized in generating business value through intelligent (digital) transformation, integrating technology, data, artificial intelligence…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Knowmad Moodknowmadmood.comHQ: Las Rozas, SpainReported employees: 1,001-5,000 | Las Rozas, Spain | 1,001-5,000 | Exact match | 2,027 contacts → |
“We are knowmad mood!(formerly atSistemas).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Stratesysstratesys-ts.comHQ: Madrid (headquarters), SpainReported employees: 1,001-5,000 | Madrid (headquarters), Spain | 1,001-5,000 | Exact match | 1,636 contacts → |
“We are a multinational company specialized in different leading technology platforms such as SAP, Salesforce, Microsoft, OpenText and other software providers that are part of our…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Entelgyentelgy.comHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,541 contacts → |
“Somos Entelgy,#TheBusinessTechConsultancy, un acelerador de la transformación para quienes necesitan seguir siendo competitivos en un mundo cambiante a gran velocidad.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Tekneiteknei.comHQ: Bilbao, SpainReported employees: 1,001-5,000 | Bilbao, Spain | 1,001-5,000 | Exact match | 720 contacts → |
“Grupo Teknei es una empresa líder en el sector tecnológico, especializada en la consultoría, desarrollo de software y soluciones IT.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Experis Españaexperis.esHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 434 contacts → |
“Experis es referente global en la selección de profesionales IT, y consultoría tecnológica para la implementación de proyectos y servicios gestionados.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Atsistemasatsistemas.comHQ: Las Rozas, SpainReported employees: 1,001-5,000 | Las Rozas, Spain | 1,001-5,000 | Exact match | 391 contacts → |
“With about 2200 experts atSistemas delivers IT consulting, services and software development which to help organizations to be more efficient and profitable.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Integraintegratecnologia.esHQ: Zaragoza, SpainReported employees: 501-1,000 | Zaragoza, Spain | 501-1,000 | Exact match | 375 contacts → |
“We are a technology consulting company, formed by different benchmark brands, which creates, through specialization in areas and technological and strategic divisions, an…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Vector ITCvectoritcgroup.comHQ: Pozuelo De Alarcón, SpainReported employees: 1,001-5,000 | Pozuelo De Alarcón, Spain | 1,001-5,000 | Exact match | 370 contacts → |
“Vector ITC, a Softtek Company, es un grupo tecnológico y digital internacional.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Opentrendsopentrends.netHQ: Barcelona, SpainReported employees: 201-500 | Barcelona, Spain | 201-500 | Exact match | 342 contacts → |
“Are you Ready?” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Exceliaexcelia.comHQ: Pozuelo De Alarcón, SpainReported employees: 201-500 | Pozuelo De Alarcón, Spain | 201-500 | Exact match | 317 contacts → |
“We are a global consulting, technology, and professional services firm with over 25 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Viseo Iberiaiberia.viseo.comHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 309 contacts → |
“VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Panel Sistemas Informaticospanel.esHQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 304 contacts → |
“Panel Systems is a technology company specialized in software development, software quality assurance, and IT services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  BIP Spainbip-group.comHQ: Madrid, SpainReported employees: 5,001-10,000 | Madrid, Spain | 5,001-10,000 | Exact match | 292 contacts → |
“BIP es una consultora internacional especializada, desde su fundación en 2003, en facilitar la transformación end-to-end de los negocios de sus clientes, donde “hacemos que las…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Timestamp Españatimestampgroup.comHQ: Pozuelo De Alarcón, SpainReported employees: 1,001-5,000 | Pozuelo De Alarcón, Spain | 1,001-5,000 | Exact match | 284 contacts → |
“Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Avos Tech A Prosegur Companyprosegur.comHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 272 contacts → |
“We are specialists in guiding our customers through the digital transformation process.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Profile Software Servicesprofile.esHQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 237 contacts → |
“Profile Software Services is a software architecture and development company, made up of more than 140 people, experts in Software Architecture, Web and Mobile Developement, Cloud…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Serbaticserbatic.esHQ: Alcobendas, SpainReported employees: 201-500 | Alcobendas, Spain | 201-500 | Exact match | 223 contacts → |
“We are a company specialising in the delivery of best-in-class technology and digital transformation services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Convotis Iberiaconvotis.comHQ: Elche, SpainReported employees: 1,001-5,000 | Elche, Spain | 1,001-5,000 | Exact match | 209 contacts → |
“TERALCO GROUP es un referente de desarrollo tecnológico que impulsa la transformación digital de tu empresa aportando soluciones a medida y creando ventajas competitivas, basadas…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Lider IT Consultingliderit.esHQ: Llanera, SpainReported employees: 201-500 | Llanera, Spain | 201-500 | Exact match | 204 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Corus Consultingcorusconsulting.comHQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 203 contacts → |
“Corus es una consultora tecnológica y de negocio con más de 20 años de experiencia en el sector, con más de 400 profesionales trabajando en proyectos nacionales e internacionales…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  IFR Groupifr.esHQ: Lleida, SpainReported employees: 51-200 | Lleida, Spain | 51-200 | Exact match | 199 contacts → |
“IFR Group is a consultancy founded in 1985 that supports companies in transforming their management, offering solutions that integrate technology, sector expertise, and a vision…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Atlantis Technologyatlantistecnologia.comHQ: San Cristóbal De La Laguna, SpainReported employees: 201-500 | San Cristóbal De La Laguna, Spain | 201-500 | Exact match | 189 contacts → |
“Atlantis Technology es una empresa con sede en Gran Canaria y Tenerife.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Tribeca Mediatribecamedia.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 187 contacts → |
“Tribeca_Media es el hub de comunicación y transformación digital que necesitas para tu empresa: • Generamos nuevas experiencias para tu cliente • Aportamos una ventaja competitiva…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 785 company matches
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Legacy system modernization companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
785 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 785 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Legacy system modernization companies by metro
Questions about this company list
What does Exact match mean for legacy system modernization companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system modernization companies did RevenueBase find based in Spain?
The saved snapshot records 785 matching company records, 32,709 tracked contacts and 6,101 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Legacy system modernization companies by geography
- Legacy system modernization companies based in Brisbane, Australia
- Legacy system modernization companies based in Melbourne, Australia
- Legacy system modernization companies based in Perth, Australia
- Legacy system modernization companies based in Sydney, Australia
- Legacy system modernization companies based in Barueri, Brazil
- Legacy system modernization companies based in Belo Horizonte, Brazil
- Legacy system modernization companies based in Campinas, Brazil
- Legacy system modernization companies based in Curitiba, Brazil
- Legacy system modernization companies based in Rio De Janeiro, Brazil
- Legacy system modernization companies based in Sao Paulo, Brazil
- Legacy system modernization companies based in Calgary, Canada
- Legacy system modernization companies based in Mississauga, Canada
Cite this list
RevenueBase Data Team. Top 25 legacy system modernization companies based in Spain. Snapshot: September 20, 2026. https://revenuebase.ai/companies/legacy-system-modernization-companies/spain.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Legacy system modernization companies based in Brisbane, Australia
- Legacy system modernization companies based in Melbourne, Australia
- Legacy system modernization companies based in Perth, Australia
- Legacy system modernization companies based in Sydney, Australia
- Legacy system modernization companies based in Barueri, Brazil
- Legacy system modernization companies based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 legacy system modernization companies based in Spain
RevenueBase records 785 matching company records for legacy system modernization companies based in Spain, with 32,709 tracked contacts and 6,101 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 legacy system modernization companies based in Spain
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Seidorseidor.com HQ: Barcelona, SpainReported employees: 5,001-10,000 | Barcelona, Spain | 5,001-10,000 | Exact match | 6,133 contacts → |
“At SEIDOR we help drive the transformation and competitiveness of our clients through technology and innovation, always focusing on the human value and prioritizing talents and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | VASSvasscompany.com HQ: Alcobendas, SpainReported employees: 1,001-5,000 | Alcobendas, Spain | 1,001-5,000 | Exact match | 2,292 contacts → |
“VASS is a global technology company specialized in generating business value through intelligent (digital) transformation, integrating technology, data, artificial intelligence…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Knowmad Moodknowmadmood.com HQ: Las Rozas, SpainReported employees: 1,001-5,000 | Las Rozas, Spain | 1,001-5,000 | Exact match | 2,027 contacts → |
“We are knowmad mood!(formerly atSistemas).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Stratesysstratesys-ts.com HQ: Madrid (headquarters), SpainReported employees: 1,001-5,000 | Madrid (headquarters), Spain | 1,001-5,000 | Exact match | 1,636 contacts → |
“We are a multinational company specialized in different leading technology platforms such as SAP, Salesforce, Microsoft, OpenText and other software providers that are part of our…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Entelgyentelgy.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,541 contacts → |
“Somos Entelgy,#TheBusinessTechConsultancy, un acelerador de la transformación para quienes necesitan seguir siendo competitivos en un mundo cambiante a gran velocidad.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Tekneiteknei.com HQ: Bilbao, SpainReported employees: 1,001-5,000 | Bilbao, Spain | 1,001-5,000 | Exact match | 720 contacts → |
“Grupo Teknei es una empresa líder en el sector tecnológico, especializada en la consultoría, desarrollo de software y soluciones IT.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Experis Españaexperis.es HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 434 contacts → |
“Experis es referente global en la selección de profesionales IT, y consultoría tecnológica para la implementación de proyectos y servicios gestionados.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Atsistemasatsistemas.com HQ: Las Rozas, SpainReported employees: 1,001-5,000 | Las Rozas, Spain | 1,001-5,000 | Exact match | 391 contacts → |
“With about 2200 experts atSistemas delivers IT consulting, services and software development which to help organizations to be more efficient and profitable.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Integraintegratecnologia.es HQ: Zaragoza, SpainReported employees: 501-1,000 | Zaragoza, Spain | 501-1,000 | Exact match | 375 contacts → |
“We are a technology consulting company, formed by different benchmark brands, which creates, through specialization in areas and technological and strategic divisions, an…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Vector ITCvectoritcgroup.com HQ: Pozuelo De Alarcón, SpainReported employees: 1,001-5,000 | Pozuelo De Alarcón, Spain | 1,001-5,000 | Exact match | 370 contacts → |
“Vector ITC, a Softtek Company, es un grupo tecnológico y digital internacional.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Opentrendsopentrends.net HQ: Barcelona, SpainReported employees: 201-500 | Barcelona, Spain | 201-500 | Exact match | 342 contacts → |
“Are you Ready?” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Exceliaexcelia.com HQ: Pozuelo De Alarcón, SpainReported employees: 201-500 | Pozuelo De Alarcón, Spain | 201-500 | Exact match | 317 contacts → |
“We are a global consulting, technology, and professional services firm with over 25 years of experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Viseo Iberiaiberia.viseo.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 309 contacts → |
“VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Panel Sistemas Informaticospanel.es HQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 304 contacts → |
“Panel Systems is a technology company specialized in software development, software quality assurance, and IT services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | BIP Spainbip-group.com HQ: Madrid, SpainReported employees: 5,001-10,000 | Madrid, Spain | 5,001-10,000 | Exact match | 292 contacts → |
“BIP es una consultora internacional especializada, desde su fundación en 2003, en facilitar la transformación end-to-end de los negocios de sus clientes, donde “hacemos que las…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Timestamp Españatimestampgroup.com HQ: Pozuelo De Alarcón, SpainReported employees: 1,001-5,000 | Pozuelo De Alarcón, Spain | 1,001-5,000 | Exact match | 284 contacts → |
“Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Avos Tech A Prosegur Companyprosegur.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 272 contacts → |
“We are specialists in guiding our customers through the digital transformation process.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Profile Software Servicesprofile.es HQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 237 contacts → |
“Profile Software Services is a software architecture and development company, made up of more than 140 people, experts in Software Architecture, Web and Mobile Developement, Cloud…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Serbaticserbatic.es HQ: Alcobendas, SpainReported employees: 201-500 | Alcobendas, Spain | 201-500 | Exact match | 223 contacts → |
“We are a company specialising in the delivery of best-in-class technology and digital transformation services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Convotis Iberiaconvotis.com HQ: Elche, SpainReported employees: 1,001-5,000 | Elche, Spain | 1,001-5,000 | Exact match | 209 contacts → |
“TERALCO GROUP es un referente de desarrollo tecnológico que impulsa la transformación digital de tu empresa aportando soluciones a medida y creando ventajas competitivas, basadas…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Lider IT Consultingliderit.es HQ: Llanera, SpainReported employees: 201-500 | Llanera, Spain | 201-500 | Exact match | 204 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Corus Consultingcorusconsulting.com HQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 203 contacts → |
“Corus es una consultora tecnológica y de negocio con más de 20 años de experiencia en el sector, con más de 400 profesionales trabajando en proyectos nacionales e internacionales…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | IFR Groupifr.es HQ: Lleida, SpainReported employees: 51-200 | Lleida, Spain | 51-200 | Exact match | 199 contacts → |
“IFR Group is a consultancy founded in 1985 that supports companies in transforming their management, offering solutions that integrate technology, sector expertise, and a vision…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Atlantis Technologyatlantistecnologia.com HQ: San Cristóbal De La Laguna, SpainReported employees: 201-500 | San Cristóbal De La Laguna, Spain | 201-500 | Exact match | 189 contacts → |
“Atlantis Technology es una empresa con sede en Gran Canaria y Tenerife.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Tribeca Mediatribecamedia.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 187 contacts → |
“Tribeca_Media es el hub de comunicación y transformación digital que necesitas para tu empresa: • Generamos nuevas experiencias para tu cliente • Aportamos una ventaja competitiva…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Legacy system modernization companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
785 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 785 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Legacy system modernization companies by metro
Questions about this company list
What does Exact match mean for legacy system modernization companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system modernization companies did RevenueBase find based in Spain?
The saved snapshot records 785 matching company records, 32,709 tracked contacts and 6,101 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 legacy system modernization companies based in Spain. Snapshot: September 20, 2026. https://revenuebase.ai/companies/legacy-system-modernization-companies/spain.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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