ZTABS delivers professional legacy app modernization for Barcelona businesses — including incremental modernization, business logic preservation, data migration. Serving Mobile & Telecom, Travel Tech, HealthTech companies in Barcelona, Spain.

ZTABS provides legacy app modernization services in Barcelona, Spain — including incremental modernization, business logic preservation, data migration, and more. We work with Barcelona businesses across Mobile & Telecom, Travel Tech, HealthTech using technologies like Next.js, React, Node.js.Get a free consultation →
Our legacy app modernization team delivers a full range of capabilities tailored to Barcelona's Mobile & Telecom and Travel Tech sectors:
Modernize one module at a time — reducing risk, delivering value early, and keeping the business running throughout.
We extract and document the business rules embedded in legacy code so nothing gets lost in the new system.
Migrate from legacy databases (Access, FoxPro, SQL Server) to modern PostgreSQL or cloud-managed databases.
Build modern REST or GraphQL APIs that let the new system talk to legacy components during the transition period.
Create comprehensive test suites that verify the new system behaves identically to the old one for every critical workflow.
Deploy the modernized application on AWS, Azure, or Vercel with CI/CD pipelines, monitoring, and auto-scaling.
Each phase includes clear deliverables and Barcelona stakeholder reviews. See our full process →
Barcelona (a leading European startup city and Mobile World Congress host, population 1.6 million) is home to thriving Mobile & Telecom, Travel Tech, HealthTech sectors — each with distinctlegacy app modernization needs. Mobile and telecom companies need 5G applications, IoT platforms, and connectivity solutions. Travel tech firms require booking engines, revenue management, and experience platforms. HealthTech companies need digital health, telemedicine, and clinical trial software. Marketplace platforms need multi-sided platform technology and payment integration.
Barcelona hosts Mobile World Congress annually, cementing its position as a global mobile and connectivity hub. The city has a thriving startup ecosystem in travel tech, healthtech, and marketplace platforms, with companies like Glovo, Typeform, and Travelperk. Lower costs than London or Paris, combined with quality of life, attract international founders and remote teams.
Lower costs than northern European hubs with Mediterranean quality of life. Strong international talent pool drawn by lifestyle. Government and EU funding support startups. UPC and UB universities provide engineering talent. Catalonia's innovation ecosystem and proximity to Southern European markets.
Each of Barcelona's core sectors has specific legacy app modernization requirements. We build solutions tailored to these industry needs:
We work with Barcelona's mobile & telecom companies on custom legacy app modernization — from regulatory compliance to workflow automation and data integration tailored to how mobile & telecom operates in Spain.
We work with Barcelona's travel tech companies on custom legacy app modernization — from regulatory compliance to workflow automation and data integration tailored to how travel tech operates in Spain.
Legacy App Modernization for Travel →We work with Barcelona's healthtech companies on custom legacy app modernization — from regulatory compliance to workflow automation and data integration tailored to how healthtech operates in Spain.
We work with Barcelona's marketplace platforms companies on custom legacy app modernization — from regulatory compliance to workflow automation and data integration tailored to how marketplace platforms operates in Spain.
Our distributed engineering team delivers the same quality and responsiveness as a local partner. Lower costs than northern European hubs with Mediterranean quality of life. Strong international talent pool drawn by lifestyle. Government and EU funding support startups. UPC and UB universities provide engineering talent. Catalonia's innovation ecosystem and proximity to Southern European markets.
Our legacy app modernization team aligns sprints, standups, and code reviews to Barcelona's Central European Time (CET) business hours. We schedule overlap windows so your team gets same-day responses and real-time collaboration across time zones.
A senior legacy app modernization project lead manages your engagement end-to-end. They understand Barcelona's business landscape and Mobile & Telecom sector requirements, own your backlog, and ensure every two-week sprint delivers working features against your commercial goals.
Every Barcelona client gets daily async updates on legacy app modernization milestones, weekly demos of working features, and shared project boards. We prioritize overcommunication so your team always knows the status, blockers, and what ships next.
We have delivered legacy app modernization for Barcelona's core industries — Mobile & Telecom, Travel Tech, HealthTech — and understand the compliance, integration, and performance requirements each sector demands. HIPAA-compliant architecture is standard for our healthcare clients.
1.6 million
City Population
4
Key Industries
Central European Time
Time Zone
Common questions about legacy app modernization for Barcelona businesses
We offer end-to-end legacy app modernization for Barcelona businesses: incremental modernization, business logic preservation, data migration, api layer design. We use technologies like Next.js, React, Node.js to build solutions tailored to Barcelona's key industries — Mobile & Telecom, Travel Tech, HealthTech.
ZTABS delivers professional legacy app modernization for Houston businesses — including incremental modernization, business logic preservation, data migration. Serving Energy & Oil/Gas, Healthcare & Biotech, Aerospace & Defense companies in Houston, TX.
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Legacy App Modernization in Los Angeles, CAZTABS delivers professional legacy app modernization for Los Angeles businesses — including incremental modernization, business logic preservation, data migration. Serving Entertainment & Media, E-commerce & DTC Brands, Gaming & AR/VR companies in Los Angeles, CA.
Web Development in Barcelona, SpainZTABS delivers professional web development for Barcelona businesses — including full-stack development, progressive web apps, api development. Serving Mobile & Telecom, Travel Tech, HealthTech companies in Barcelona, Spain.
Web Design in Barcelona, SpainZTABS delivers professional web design for Barcelona businesses — including ui/ux design, responsive design, custom interfaces. Serving Mobile & Telecom, Travel Tech, HealthTech companies in Barcelona, Spain.
AI Development in Barcelona, SpainZTABS delivers professional ai development for Barcelona businesses — including llm integration & fine-tuning, ai agents & automation, rag & knowledge systems. Serving Mobile & Telecom, Travel Tech, HealthTech companies in Barcelona, Spain.
Legacy App ModernizationLearn more about our legacy app modernization services nationwide.
Next.jsNext.js transforms web applications into high-performance, SEO-friendly platforms that drive user engagement and boost conversion rates. Leverage its capabilities to streamline your development process and accelerate time-to-market, ensuring your business stays ahead of the competition.
ReactHarness the power of React to accelerate your development process, enhance user experiences, and drive ROI. With its component-based architecture, React allows businesses to build dynamic applications that are both scalable and maintainable, ensuring long-term success in a competitive landscape.
Partner with ZTABS for expert legacy app modernization in Barcelona. Get a free consultation today.