14 providers · Spain
Application Modernisation Providers in Spain
The application modernisation market in Spain serves the country's banking and telecommunications sectors as well as the broader enterprise IT estate concentrated in Madrid. Application modernisation providers help enterprises evolve legacy applications into cloud-native, maintainable services. The work spans assessment and decomposition of monoliths, refactoring to microservices, container migration, mainframe modernisation and database migration. TechVendorIndex tracks 14 providers actively delivering application modernisation engagements in Spain, drawn from global systems integrators, regional champions and specialist boutiques.
About application modernisation in Spain
Legacy modernisation, re-platforming and cloud-native rebuild. Buyers in Spain typically engage providers in this category to support transformation work tied to banking and telecommunications priorities, with delivery shaped by local obligations under EU GDPR, the LOPDGDD, the National Security Scheme (ENS) for public sector and the Banco de España outsourcing framework.
Top application modernisation providers in Spain
The 14 firms below are ranked by verified delivery presence in Spain, with focus and rating drawn from TechVendorIndex editorial assessments. No vendor pays for placement.
Provider
Focus in Application Modernisation
Rating
Reviews
Accenture Spain
HQ: Madrid · BFSI, telecom, public sector
Legacy modernisation and cloud-native rebuild
4.2
Editorial score
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Capgemini Spain
HQ: Madrid · SAP, engineering, public sector
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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Indra (Minsait)
HQ: Madrid · BFSI, public sector, energy
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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Atos Spain
HQ: Madrid · Managed services and cyber
Legacy modernisation and cloud-native rebuild
3.7
Editorial score
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Deloitte Spain
HQ: Madrid · ERP, cyber, advisory
Legacy modernisation and cloud-native rebuild
4.3
Editorial score
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NTT DATA Spain (everis)
HQ: Madrid · Banking, telecom, public sector
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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IBM Spain
HQ: Madrid · Cloud, AI, mainframe
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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Tecnocom (Indra)
HQ: Madrid · Application services and BPO
Legacy modernisation and cloud-native rebuild
3.9
Editorial score
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GFT Spain
HQ: Madrid · BFSI and digital
Legacy modernisation and cloud-native rebuild
4.1
Editorial score
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Babel
HQ: Madrid · Custom development and digital
Legacy modernisation and cloud-native rebuild
4.1
Editorial score
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Sopra Steria Spain
HQ: Madrid · Public sector and BFSI
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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PwC Spain
HQ: Madrid · Cyber and cloud advisory
Legacy modernisation and cloud-native rebuild
4.1
Editorial score
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Telefónica Tech
HQ: Madrid · Cyber, cloud, IoT
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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KPMG Spain
HQ: Madrid · Cyber and cloud advisory
Legacy modernisation and cloud-native rebuild
4.0
Editorial score
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Application Modernisation market overview in Spain
Within the broader EUR 42 billion enterprise IT services market in Spain, application modernisation is one of the more active disciplines, growing roughly in line with the 5.2% headline expansion of the wider services market. Demand is concentrated in Madrid and Barcelona, where the largest banking and telecommunications buyers maintain dedicated programme teams. Procurement decisions are shaped by the fact that Spain is Iberia is the home market for Banco Santander, BBVA and Telefónica, whose IT spend anchors the systems-integrator base, with Barcelona emerging as a southern-European digital hub. AI-assisted code transformation tools have changed the economics of legacy modernisation in Spain, particularly for COBOL and older Java estates. Buyers increasingly choose strangler-fig patterns and incremental decomposition rather than big-bang rewrites. Mid-market buyers in Spain increasingly favour specialist firms with deep domain expertise over generalist consultancies, while the largest programmes continue to be awarded to the multinational integrators with global delivery models and embedded banking practices.
How to select a application modernisation provider in Spain
Use the following criteria to shortlist providers before issuing a formal request for proposal. Most procurement teams in Spain weight references and operating-model fit more heavily than headline rate cards.
- Assessment tooling that produces transparent decomposition recommendations
- Demonstrated track record on the language and platform being modernised
- Pattern library beyond rewriting — refactor, repackage, retire, replace
- Domain experience in banking for business-rules extraction
- Operational handover plan for the modernised application portfolio
Typical engagement model
Assessment phases are typically fixed-fee (USD 100,000 to USD 500,000) and run 6 to 12 weeks. Modernisation programmes proper run 12 to 36 months depending on estate complexity, on a mix of fixed-fee and time-and-materials with milestone gates.
Pricing should always be benchmarked against at least three references in Spain at comparable scope. Engage independent advisory support before signing multi-year contracts above USD 5M annual contract value.
Related categories and regions
Compare the application modernisation market in Spain with other service lines in the same country, or with application modernisation in other markets covered by TechVendorIndex.
Frequently asked questions
Should we rewrite or refactor legacy applications in Spain?
Refactor preserves business-rules investment and is usually cheaper. Rewrite is justified only when the application no longer serves the business model or when the existing technology stack carries unacceptable security or talent risk.
How long does mainframe modernisation take in Spain?
Targeted modernisation of a single mainframe workload runs 12 to 24 months. Full mainframe exit programmes typically take 4 to 7 years for enterprises in banking given regulatory testing requirements.
Can AI accelerate modernisation in Spain?
AI tools can accelerate code translation, test generation and documentation extraction by 30 to 50 percent. They do not yet replace domain expertise on business-rules interpretation or integration design.
What is the typical cost of a modernisation programme in Spain?
Programme costs scale with estate complexity. Mid-market application portfolios modernise for USD 5M to USD 20M; enterprise portfolios with mainframe content run USD 50M+ across multiple years.
Last updated: May 2026