Top 16 Legacy System Modernization Firms in Spain: Best Picks for 2026

Legacy systems are creating operational bottlenecks, security gaps, and escalating maintenance costs that slow digital transformation for many Spanish enterprises. When evaluating modernization firms, buyers should compare migration approach (rewrite, replatform, or encapsulation), cloud and multi-cloud readiness, data migration and integrity processes, API and systems integration capabilities, regulatory compliance experience, familiarity with mainframe and enterprise stacks, testing and validation methods, change management and user training, timeline and risk mitigation, and total cost of ownership and support SLAs.

SoftPro appears first as the featured, author-selected international partner for this roundup and serves buyers across Spain as an international partner.

Quick comparison of legacy modernization firms in Spain

1. SoftPro

SoftPro is our featured international partner for legacy system modernization in Spain and appears first on this list because it pairs practical modernization experience with multilingual engagement for Spanish clients. The firm works with startups, SMEs, and corporate teams on projects that require progressive web apps, Umbraco-based web platforms, API-driven migrations, and cross-border cloud transformations.

SoftPro’s practical strengths for legacy modernization are visible on its website: the company documents lift-and-shift migrations, containerization, and migration to cloud-native Azure and AWS platforms while working with ASP.NET Core and C# stacks. The team emphasizes progressive web apps with a performance focus, front-end development in React, and CMS work that explicitly references Umbraco, which supports CMS migration and portal modernization projects.

Key Highlights

• More than 20 years of combined team experience across custom software projects.

• Headquartered in Warsaw, Poland at Erazma Ciołka 13, lok. 401, with an EU-based delivery team.

• Publishes case studies that include a Business Portal, CRM/HRM system, SAAS ETL platform, Support System, and a social network for product promotion.

• Offers AI services that include LLM integration, retrieval-augmented generation architecture, and ML model development for enterprise integration.

Services

• Custom software development

• Web application development

• Cloud development and migration

• Artificial intelligence and machine learning

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/company/soft-pro-pl

2. NTT DATA España (everis)

NTT DATA España (formerly everis) operates a full portfolio of legacy modernization services, with dedicated pages for Application & Mainframe Modernization and a Microsoft‑aligned Modernization Studio for migrating applications to Azure. The site also publishes sector case studies that describe large migration programs and cloud replatforming for clients in insurance and the public sector.

Buyers can evaluate NTT DATA España for legacy modernization by reviewing the Modernization Studio framework on the site, which documents a three‑pillar approach that combines a joint specialized team, an end‑to‑end methodology, and accelerator tools. The site further supports assessment through published whitepapers and a documented application‑inventory accelerator that helps identify modernization candidates and migration strategies.

Key Highlights

• Reports 21,000 professionals working in Spain.
• Part of a global organization with roughly 190,000 employees and operations in 70+ countries.
• Won a public contract worth over €19 million from the Ayuntamiento de Madrid to modernize municipal systems.
• Publishes technical whitepapers and an application‑inventory accelerator to analyze and prioritize legacy modernization efforts.

Services

• Application & Mainframe Modernization
• Cloud Migration to Azure
• DevSecOps & Microservices
• Data Modernization

Contact Information

Website: es.nttdata.com

Phone: +34 91 749 00 00

Email: infoweb@nttdata.com

Address: Camino de la Fuente de la Mora, número 1, 28050 Madrid, Spain

3. Sngular

Sngular is a global technology consultancy that supports the modernization of digital products and operational platforms. The company site documents cloud-native Cloud & DevOps capabilities and a published case study showing the use of contract testing with Pactflow to reduce manual testing costs during an application modernization program.

Buyers assessing Sngular for legacy system modernization should evaluate its Cloud Integration and Cloud & DevOps practices, since the site lists Infrastructure as Code, container orchestration, and CI/CD as core delivery elements. Review Sngular’s published success stories and request the Pactflow modernization reference and any migration details to verify experience with large-scale application and infrastructure modernizations.

Key Highlights

• Over 1,500 professionals and an international presence across Europe, the United States, Latin America and the Middle East.
• Publishes a success story about migrating 800+ projects and 5,000 users to Jira Cloud, demonstrating large-scale migration experience.
• Operates Sngular Gen (S|Gen) within Sngular Labs, an AI-native experimentation lab that develops new engineering methodologies.
• Through its R&D division Sngular Edge the company cites projects such as T4S (AI for science) and the MM8 suite for modernising COBOL systems, and lists partnerships with Google DeepMind and Repsol Technology Lab.

Services

• Software Development
• Data & AI
• Cloud Integration
• Cybersecurity

Contact Information

Website: www.sngular.com

Address: Labastida Street, 1, Madrid, 28034, Spain

4. Plain Concepts

Plain Concepts is a global technology firm that guides enterprises through legacy system modernization and cloud transformation. The company publishes a dedicated guide titled “Key Strategies for Modernizing your Legacy Applications and Systems” and its site lists application and database modernisation, cloud migration, containers and Kubernetes, microservices, and DevOps as core modernization approaches. Plain Concepts also documents concrete work that touches legacy-code refactoring, for example a Zara case study that describes modularization and refactoring of a legacy Objective‑C iOS app.

Buyers evaluating Plain Concepts for legacy modernization can use the firm’s published playbooks and assessments as evidence of approach and scale. The site documents an Extended and Hybrid Collaboration model and a DevOps Assessment offering, and the homepage lists 2400+ projects and 26+ delivery centers worldwide, which buyers can verify when comparing delivery footprint and documented assessment practices.

Key Highlights

• Holds multiple Microsoft recognitions, including 11 listed Microsoft Advanced Specializations that explicitly include Migrate Enterprise Apps to Microsoft Azure and Kubernetes on Microsoft Azure.
• Is a GitHub Verified Partner, a designation the company highlights on its site.
• Publishes industry case studies and recent corporate moves, including the acquisition of Ardanis to expand UK & Ireland delivery capabilities.
• Lists global scale metrics on the official site: 2400+ projects and 700+ employees, indicating delivery capacity for large modernization programs.

Services

• Application & Database Modernization
• Cloud Migration & Cloud‑Native Development
• DevOps Assessment & SRE
• Data Platform & Microsoft Fabric

Contact Information

Website: www.plainconcepts.com

5. Hiberus Tecnología

Hiberus Tecnología is a Spanish technology consultancy with more than 5,000 professionals, 35 offices and a presence in 15 countries. The company documents cloud modernization and legacy work on its site, including a blog titled “Migración de Código Legacy con inteligencia artificial” and case studies that describe an AWS-based migration of the El Tiempo platform, a multisite migration for Liberty Seguros to Drupal and Acquia Cloud, and a microservices re-architecture for Home Connect.

Buyers assessing Hiberus for legacy system modernization should review the firm’s Data & IA and Product Engineering pages to confirm its AI-assisted migration techniques and cloud toolchain. Request technical case-study artefacts that show the El Tiempo AWS migration, the Liberty Seguros Drupal/Acquia consolidation, and microservices design decisions for Home Connect, and verify platform integrations listed on the site such as AWS, Azure, GCP, Databricks and Snowflake.

Key Highlights

• The site lists AWS Partner Premier Tier status and cites AWS GenAI architecture and business-impact awards.
• Hiberus is a Platinum Partner of Liferay and holds the Liferay DXP Cloud Specialized Partner designation.
• The company is Snowflake Services Partner Elite and states it was the first partner in Spain to attain an Advanced Data Scientist certification.
• Hiberus reports acquisition activity in its SAP practice and claims the largest number of certified professionals in SAP CX on the site.

Services

• Legacy code migration
• Cloud modernization & replatforming
• Application maintenance & managed services

Contact Information

Website: www.hiberus.com

6. VASS

VASS is a Madrid-based digital transformation and software engineering group that documents legacy-to-cloud and ERP modernization work on its official site. Its customer success stories include a UK loan provider programme that replaced eight legacy systems and its resources include guidance for migrating legacy SAP ERP to SAP S/4HANA.

For buyers evaluating legacy system modernization vendors, VASS publishes named success stories and technical notes that let evaluators verify outcomes and scope. Prospective clients can review those case studies for system replacement metrics and check the company’s listed cloud and integration partners to validate tooling and approach.

Key Highlights

• 25 years of operation stated on the site.
• More than 300 clients, with named blue-chip customers such as IKEA, BBVA, and Telefónica.
• Presence in 24 countries and a stated workforce of 4,600 experts.
• Operates an AI‑Powered Product Hub that includes a Live AI Readiness Assessment and an Accelerator-to-Spartacus AI Kit for SAP Commerce migrations.

Services

• Cloud
• Software Engineering
• SAP Business Suite
• Data & AI

Contact Information

Website: vasscompany.com

Address: Avda/ de Europa 1, edificio B, CP 28108, Alcobendas (Madrid)

Email: dataprotection@vasscompany.com

7. GMV

GMV is a Spanish multinational technology group headquartered in Tres Cantos that develops high‑tech software and platform solutions for aerospace, defense, intelligent transportation, healthcare, and public administration. The company’s website presents sector pages, product descriptions, and deployment narratives that demonstrate large-scale platform work and SaaS delivery in areas such as digital public services and intelligent transportation.
GMV’s site does not show explicit, named “legacy system modernization” projects. Buyers evaluating GMV for legacy modernization should review the firm’s systems‑integration and OT/IT security materials, its transit SaaS and CAD/AVL product pages, and its published case examples of industrial cybersecurity and public‑sector digital transformation to judge fit for migration, replatforming, or API‑enablement work.

Key Highlights

• GMV was named HPE Service Provider of the Year 2026 for the LASER region, highlighting its infrastructure and systems integration capabilities.
• The CAD/AVL product page states GMV solutions deliver real‑time passenger information and that GMV systems are deployed across more than 100 cities.
• GMV documents an industrial cybersecurity project that focused on separating and segmenting IT and OT communications for a cement producer.
• The company reports Environmental Management System compliance with UNE-EN ISO14001:2015 at its headquarters and selected Spanish facilities.

Services

• Systems integration
• Industrial cybersecurity
• Transit SaaS
• Digital transformation consulting

Contact Information

Website: www.gmv.com

Phone: +34 91 807 21 00

Email: info@gmv.com

Address: Isaac Newton 11, P.T.M., Tres Cantos, 28760 Madrid, Spain

LinkedIn: linkedin.com/company/gmv

8. Ibermática

Ibermática is a Spanish IT services group that offers cloud, ERP hosting, systems integration and managed application services for enterprise customers. The company documents an IberCloud offering and a SAP hosting portfolio with S/4HANA appliance options and cloud-managed SAP hosting capabilities that support migrations and lifecycle operations.

For buyers focused on legacy system modernization, Ibermática publishes migration and infrastructure transformation services alongside ongoing managed services and support. Prospective clients can evaluate the firm by reviewing its documented SAP hosting model and cloud governance, and by checking referenced projects such as application maintenance for Kutxabank and the OLANET traceability integration to verify systems-integration experience.

Key Highlights

• IBM POWER–based SAP hosting architecture with high-availability deployment across two datacenters, stated in the SAP hosting product materials.
• IberCloud platform and multicloud governance model that describes auto‑scaling, monitoring and cross‑datacenter deployment capabilities.
• Lists multiple management and security standards including ISO 27001, ISO 20000‑1 and related governance controls.
• Liferay Platinum Service Partner for digital experience, indicating a documented capability in portal and DXP projects.

Services

• Cloud migration
• SAP S/4HANA hosting & migration
• Datacenter transformation
• Managed application services

Contact Information

Website: www.ibermatica.com

Phone: 902 413 500; 91 3849 100; 94 3413 500. (marketing.ibermatica.com)

9. Grupo BABEL

BABEL is a Spanish technology consultancy that offers custom software development and digital acceleration from offices across Spain and several international locations. Their development services page explicitly lists a “Modernización y legacy Modernización 360” offering and describes work across front-end, back-end, mobile, digital experience platforms and the definition of application infrastructures and architectures that optimize public, hybrid, or private cloud.

Buyers assessing legacy system modernization should review BABEL’s Modernización 360 service page together with its Cloud and SysOps & infraestructuras and QA/testing pages to understand delivery patterns. The site also hosts a Casos de Éxito section that provides project examples a buyer can inspect to evaluate technical approach and outcomes.

Key Highlights

• Case studies on the site reference work for Orange España, Banco Santander, RTVE and Attijariwafa Bank.
• The site lists industry coverage that includes Public Administration, Banking, Energy & Utilities, Manufacturing, Retail & Distribution, Health, Security & Defense, Insurance, Telecommunications and Transport.
• BABEL publishes dedicated service pages for Cloud, SysOps & infraestructuras and Quality Assurance and testing alongside its software development offerings.
• The company maintains multiple Spanish offices (Almería, Barcelona, Logroño, Madrid, Málaga, Oviedo, Sevilla, Zaragoza) and international offices in Chile, Colombia, Costa Rica, Mexico, Panama, Portugal, Morocco and the Dominican Republic.

Services

• Legacy Modernization 360
• Cloud & SysOps
• Digital Experience Platforms (DXP)
• QA & Testing

Contact Information

Website: babelgroup.com

Phone (Madrid office): +34 917 452 370

Address (Madrid office): C/Severo Ochoa nº2 1º y 2º planta, Edificio Oeste, 28232 Las Rozas Business Park, Madrid

10. atmira

atmira is a Spain-based digital transformation and software engineering firm that presents itself on the site as a platform-as-a-service oriented ecosystem. The company’s Customer Stories include a "Transformación de monolito hospitalario a microservicios" case and a "El éxito de la migración a la nube acelera el Journey to Cloud" case, showing direct experience in monolith-to-microservices and cloud migration projects.

Buyers evaluating atmira for legacy system modernization can examine the Tech Hub capabilities listed on the site, which cite microservices, containers, Kubernetes, frameworks, and shared code repositories as part of delivery. The site also states CMMI Level 3 maturity and ISO 27001 certification, which buyers can use to assess process maturity and information security readiness when comparing vendors.

Key Highlights

• Reported company figures on the profile page list €70 million in revenue.
• The site lists a team of 820 people.
• The site states the company serves more than 40 clients.
• The organisation is accredited under Spain’s Esquema Nacional de Seguridad (ENS).

Services

• Application Modernization
• Cloud Migration
• Microservices & API Architecture
• Core Banking Modernization

Contact Information

Website: www.atmira.com

Email: info@atmira.com

Email: dpd.seguridad@atmira.com

Address (Madrid): Calle de Santiago de Compostela 94, 28035 Madrid

Phone (Madrid): +34 914 47 18 47

Address (Barcelona): Avinguda Diagonal, 609-615, 08028 Barcelona

Phone (Barcelona): +34 934 09 19 14

Address (Vilafranca): Calle La Gornal 21 B, 08720 Vilafranca del Penedès, Barcelona

Phone (Vilafranca): +34 931 69 43 10

Address (Córdoba): Calle Victoriano Rivera 2, Planta 1, 14002 Cordoba

Phone (Córdoba): +34 957 623 130

Address (Sevilla): Av. de Diego Martínez Barrio 10, 41013 Sevilla

Phone (Sevilla): +34 955 34 14 40

Address (Logroño): Calle Chile 54, 26007 Logroño, La Rioja

Phone (Logroño): +34 917 93 67 40

Address (Chile - Santiago): Cerro el Plomo 5630, piso 13, Las Condes, Santiago

Address (Chile - Temuco): Dieciocho de Septiembre 525, Tercer piso – 302, Temuco, Araucanía

11. Ayesa

Ayesa Digital is the technology arm of Ayesa that documents application lifecycle and cloud capabilities on its official site. Its “Servicios de aplicaciones” page states the company executes modernization, maintenance and managed-service engagements for client applications and describes PMO, consulting, quality offices and technical assistance as part of delivery.

Buyers evaluating legacy system modernization projects should review Ayesa Digital’s Cloud and Enterprise Platforms pages for concrete delivery details. The Cloud page describes adaptation of existing code to cloud environments, development of cloud-native microservices and container-based architectures, Infrastructure as Code orchestration and multi-cloud integration, while the Applications page specifies managed-service models, agile/DevOps or waterfall teams and PMO-led governance for modernization programs.

Key Highlights

• Independent client-satisfaction ranking: Ayesa Digital is presented on its site as the highest‑rated IT services provider by clients in Spain in the Eraneos/Whitelane Research report.
• Enterprise platforms footprint: the company lists certified practices for SAP, Salesforce and Microsoft and states it is co-leader in Spain for certified SAP consultants.
• Cloud delivery specifics: the site calls out support for public hyperscalers (Google, AWS, Microsoft) and positions IaC, microservices and containerization as core cloud migration capabilities.
• Service guarantees and operations: Ayesa Digital’s cloud platform management cites a platform SLA above 96% for managed environments.

Services

• Application Modernization
• Cloud Migration & Cloud‑native
• Enterprise Platforms (SAP, Salesforce, Microsoft)
• Managed Application Services

Contact Information

Website: www.ayesa.com

Website: www.ayesa.com

12. Inetum España

Inetum España publishes a suite of Spanish-language case studies and service pages that show end-to-end IT consulting and platform modernization work. The site documents ERP and cloud modernization examples, such as migrations to SAP S/4HANA, cloud ERP moves to Dynamics 365, implementations of SAP Concur, and Salesforce-based commercial transformations for Spanish clients.

The site does not show explicit references to Progressive Web Apps, service workers, offline-first caching, Umbraco, or Sitecore work. Buyers evaluating Inetum for legacy system modernization should review its Application Services, Cloud Services, Infrastructure and Microsoft/SAP solution pages and read the Spanish success stories that describe multi-year ERP renewal programs, Azure migration work, and integrated platform implementations to confirm scope and delivery model.

Key Highlights

• Inetum holds Microsoft Global Gold Partner status and covers all Microsoft Solution Areas on its services pages.
• The Data & AI section promotes Coborg™, Inetum’s proprietary framework for operationalizing AI pilots into production.
• A published Spanish success story describes a five-year ERP renewal engagement for a public body that involved roughly ten Inetum consultants.
• Inetum documents cybersecurity delivery including a 24/7 SOC implementation for Aragonesa de Servicios Telemáticos.

Services

• Application Services
• Cloud Services
• Infrastructure Services
• Data & AI

Contact Information

Website: www.inetum.com

Phone: +34 662 669 616

Email: spain@inetum.com

Address: Calle María de Portugal, 9-11. Madrid – ESPAÑA

LinkedIn: linkedin.com/company/inetum

13. GFT Technologies España

GFT Technologies is a global technology partner centered on AI with origins in banking and finance. The Spanish site explicitly lists Platform Modernization as a service, publishes a guide on mainframe modernization for life insurance, and links to a Deutsche Bank case study on modernizing credit risk systems.

Buyers evaluating legacy system modernization should review GFT’s documented approaches to cloud migration, platform accelerators, agile delivery and AI productionization. The site also highlights a broad partner ecosystem and platform integrations that buyers can verify when assessing fit and technical compatibility.

Key Highlights

• Awarded Salt Bank cloud banking project is published as a success story on the Spanish site.
• BX Digital case study shows a regulated trading system built with blockchain and listed as a GFT success story.
• Mapfre case study documents using AI to increase developer productivity and is presented on the site.

Services

• Platform Modernization
• Cloud Services
• Software Engineering
• Data Services for AI

Contact Information

Website: www.gft.com

Email: info@gft.com

Madrid address: Avenida Bruselas 26, 28108 Alcobendas, Madrid. Phone: +34 91 821 80 00

Barcelona / Sant Cugat address: Avinguda Alcalde Barnils, 71, 08174 Sant Cugat del Vallès. Phone: +34 93 563 9000

Valencia address: Calle Roger de Lauria 19, planta 5ª, 46002 Valencia. Phone: +34 963012541

14. IBM Spain

IBM Spain publishes Spanish-language enterprise cloud and IT transformation resources and presents dedicated solution pages for legacy and mainframe application modernization on its site.

Buyers evaluating legacy-system modernization work with IBM Spain should review its IBM Consulting cloud-migration and application-modernization offerings, the site’s described hybrid-cloud and incremental modernization approaches, and published partner announcements and case resources on the Spanish site.

Key Highlights

• IBM documents use of IBM Cloud Paks to containerize and integrate microservices across mainframe, server, and cloud environments.
• The company promotes AI-driven modernization tools including IBM® Mainframe Application Modernizer, Analysis and Renovation Catalyst (ARC), and watsonx Code Assistant for source-code analysis and refactoring.
• IBM Spain has announced a partnership with CAST to accelerate application migration and modernization assessments.
• IBM notes availability of IBM Wazi in AWS Marketplace as part of a Z and Cloud Modernization Stack described on its site.

Services

• Mainframe application modernization.
• Cloud migration consulting.
• Application modernization.
• Infrastructure modernization (IBM Cloud Paks).

Contact Information

Website: www.ibm.com

Phone: Service Technical +34 901 100 000; Partner support Spain +34-913894558. (ibm.com)

Address: International Business Machines, S.A., Edificio Think Plaza, Plaza Pablo Ruiz Picasso, 11, 28020 Madrid. Consulting (IBM Global Services España, S.A.) at the same address. (ibm.com)

15. Logicalis Spain

Logicalis Spain is the Spanish arm of the Logicalis group that delivers cloud migration, managed services and systems integration across Spain. The company site states more than 25 years of presence and a team of more than 1,000 professionals, and it publishes focused content on application modernization and multicloud strategies including a Meet the Experts episode that discusses Red Hat OpenShift and the Grupo Piñero project built on OpenShift across Azure and AWS.

Buyers evaluating legacy system modernization should review Logicalis Spain’s documented approach on the Cloud services page, which defines Assessment, Pilot (landing zone) and Migration phases. The site’s case studies include a VMware-to-AWS modernization for Servihabitat that documents use of Terraform, AWS native services and a 7Rs-based migration strategy, so request those artifacts and architecture diagrams to validate their technical delivery and governance model.

Key Highlights

• Logicalis Spain holds the AWS Migration & Modernization Competency awarded by AWS.
• The company has earned an Analytics on Microsoft Azure specialization, reinforcing Azure data and analytics capabilities.
• Case studies describe end-to-end Landing Zone design that evolved into managed cloud operations with 24x7 services and FinOps practices.
• Partner and vendor roster on official materials includes IBM, Cisco, NetApp, VMware, Red Hat, Microsoft, F5, Lenovo and Oracle.

Services

• Cloud migration & modernization
• Landing Zone & cloud governance
• Managed AWS cloud services
• Application modernization and microservices

Contact Information

Website: www.es.logicalis.com

Phone (Barcelona): +34 93 363 25 90

Phone (Madrid): +34 91 766 90 69

Email: marketing-es@es.logicalis.com

Address (Barcelona): Av. Diagonal 569, 2ª planta, Edif. L’Illa Diagonal, 08029 Barcelona

Address (Madrid): C/ Ribera del Loira, 38, Edificio 4, 28042 Madrid

LinkedIn: linkedin.com/company/logicalis-spain/

16. Nunsys Group

Nunsys Group is a Spanish IT group headquartered in Paterna, Valencia, that combines cloud, infrastructure, systems and application work for public and private organizations. The corporate site documents that Nunsys holds all six Microsoft Solutions Partner competencies and publishes Microsoft-focused case studies, including a Power Platform project for Oceanogràfic and a Business Central implementation for FRUMECAR.

The site does not show Progressive Web App, service worker, offline-first, Umbraco, or Sitecore projects. For legacy system modernization buyers should evaluate Nunsys by reviewing its Microsoft competencies and related case studies, inspecting its Nunsys Cloud and owned data center / hybrid cloud capabilities, and confirming migration and continuity details in its managed database (DBA) offering that lists availability options of 12×5, 24×7 and Premium.

Key Highlights

• Publishes a dedicated Copilot + AI Cloud page that frames Microsoft Copilot and Azure work as an offering.
• Operates an owned data center and promotes a hybrid public/private cloud mix after acquiring an on-premises data center.
• Runs a 24×7 Contact Center service and cites a Contact Center case with Grupo Grimaldi Lines.
• Maintains audiovisual and events production units with named projects like the Ron Arad exhibition and a Plató Virtual.

Services

• Managed Database (DBA)
• Cloud & Hybrid Infrastructure
• Business Central (ERP) implementation
• Power Platform modernization

Contact Information

Website: www.nunsys.com

Phone: 960 500 631

Email: info@nunsys.com

Address: Calle Gustave Eiffel, 3. Parque Tecnológico. 46980 Paterna (Valencia)

LinkedIn: linkedin.com/company/nunsys

Conclusion

SoftPro is the featured international partner on this list and is presented first because it pairs practical modernization experience with multilingual engagement for Spanish clients and cross-border delivery.

When choosing among firms for legacy modernization in Spain focus first on technical depth for the specific legacy stack you run and on demonstrated experience moving that stack to cloud-native or managed platforms. Prioritize delivery model and collaboration fit by assessing onshore presence, nearshore teams, co‑delivery practices, and language or cultural alignment with your IT and business stakeholders. Factor in long‑term operations by evaluating managed services, SLAs, maintenance handover, security and compliance capabilities, and plans for knowledge transfer and upskilling. Finally, compare commercial models and migration risk management approaches to balance cost, timeline, and business continuity during phased modernization.

Frequently asked questions

How much does legacy system modernization in Spain typically cost?

Costs vary widely based on system complexity, number of integrations, and regulatory requirements. Smaller replatforming or refactoring efforts can be a fraction of the price of a full rewrite, while enterprise-wide projects are more expensive. Many vendors in Spain, including SoftPro and NTT DATA España, offer initial assessments to scope effort and estimate budget.

How do I choose between firms like SoftPro, Sngular, and IBM Spain for a modernization project?

Compare each firm’s industry experience, delivery model, and references for similar projects in Spain. Evaluate technical fit such as cloud and integration capabilities, as well as governance and local regulatory knowledge. Consider pilot engagements or assessments to validate approach before committing to a full program.

What is a realistic timeline for a legacy modernization project with companies on this list?

Timelines depend on project scope: targeted module upgrades or API enablement often take a few months. Comprehensive replatforms, data migration, and organizational change typically require a year or more. Vendors like Plain Concepts, VASS, and GMV commonly recommend phased deliveries to reduce disruption.

When should a Spanish organization choose a local firm like Ibermática or Hiberus Tecnología over a global provider?

Choose a local firm when you need strong regional regulatory knowledge, closer onsite collaboration, or faster cultural alignment. Local vendors can simplify compliance and stakeholder communication for Spain-specific projects. Global providers may still be preferable when you need large-scale resources or global standardization.

What are the main risks and benefits of modernizing legacy systems with these firms?

Benefits include improved agility, lower long-term maintenance costs, and better scalability. Risks include business disruption, hidden integration complexity, and resurfacing technical debt. Mitigate risks with phased rollouts, thorough testing, and experienced partners such as Grupo BABEL, Inetum España, or Logicalis Spain who emphasize governance and incremental delivery.