We Build
Software That
Scales
Stackvio is a boutique software studio crafting high-performance web and mobile applications for startups and scale-ups.
Full-Stack Expertise
From concept to deployment, we cover every layer of modern software development with precision and care.
Web Application Development
High-performance web apps built with React, Next.js, and Vue. From MVPs to enterprise platforms, we deliver scalable front-end and full-stack solutions.
Mobile App Development
Cross-platform native mobile applications for iOS and Android. We use React Native and Flutter to ship beautiful, fast apps with a single codebase.
SaaS Product Engineering
End-to-end SaaS development — from architecture design to multi-tenant infrastructure, billing integration, and ongoing product iteration.
UI/UX Design & Prototyping
User-centered design that converts. We craft wireframes, interactive prototypes, and polished design systems that delight users.
Cloud & DevOps
Reliable, cost-efficient cloud infrastructure on AWS, GCP, and Azure. CI/CD pipelines, Docker containerization, and Kubernetes orchestration.
API Design & Backend Architecture
Robust, well-documented APIs and backend systems built with Node.js, Python, and PHP. REST, GraphQL, and microservices at any scale.
Our Process
A proven four-step methodology that delivers consistent results, on time and on budget.
Discover
We start with deep discovery sessions to understand your goals, users, and technical requirements. We audit your existing systems and define a clear roadmap.
- Requirements gathering
- Technical audit
- Roadmap planning
- Timeline & budget
Design
Our designers create wireframes, interactive prototypes, and pixel-perfect UI designs aligned with your brand. We validate with real users before writing a single line of code.
- Wireframes & flows
- UI/UX prototyping
- Design system
- User testing
Develop
Agile sprints with weekly demos. Our engineers write clean, tested, well-documented code. Full transparency via GitHub, CI/CD pipelines, and regular progress updates.
- Agile sprints
- Code reviews
- Automated testing
- Weekly demos
Deploy & Support
We deploy to production, monitor performance, and provide ongoing support. Your team gets full ownership of the codebase with thorough documentation and training.
- Production deployment
- Performance monitoring
- Documentation
- Ongoing support
Simple, Honest Pricing
Fixed-price projects with no hidden fees. You know exactly what you pay before we start.
Starter
Perfect for MVPs and proof-of-concept applications.
- MVP scoping & architecture
- Single platform (web or mobile)
- Up to 10 core features
- Responsive UI design
- Basic CI/CD setup
- 30 days post-launch support
- Source code ownership
- Documentation included
Professional
Our most popular plan for production-ready applications.
- Full product discovery phase
- 2 platforms (web + mobile)
- Unlimited features
- Full UI/UX design system
- Advanced CI/CD pipelines
- 90 days post-launch support
- Source code ownership
- Full technical documentation
- Performance optimization
- Analytics integration
Enterprise
Dedicated team for complex, mission-critical projects.
- Dedicated development team
- All platforms covered
- Enterprise architecture
- Custom design system
- SLA-backed deliverables
- 12 months support & maintenance
- Source code & IP ownership
- Security audit included
- Scalability planning
- Priority communication
All prices exclude applicable VAT (IVA). Payments via SEPA bank transfer or card. A 30–50% deposit is required to begin work.
Built by Engineers, for Founders
Since 2016, we've been helping startups and scale-ups turn ideas into production-ready software. Based in Madrid, building for the world.
Our Story
Stackvio was founded in 2016 by Joseline Aguiñaga with a clear mission: create a software studio that treats clients as partners, not just contracts.
Starting as a two-person operation, we grew organically through referrals and a relentless focus on quality. Today, our team of 25+ engineers, designers, and strategists delivers projects across Europe and beyond.
We specialize in the intersection of great engineering and great design — because we believe that beautiful, performant software is not a luxury, it's a competitive advantage.
Our Journey
What We Stand For
Quality Code
We write clean, well-tested, and documented code. Every project goes through rigorous code review and automated testing before delivery.
User-First
Great software starts with understanding users. We combine data-driven design with empathy to build products people love to use.
On-Time Delivery
We respect your deadlines. Agile sprints, transparent communication, and weekly demos ensure you always know where your project stands.
Long-Term Partnership
We build lasting relationships with our clients. Many have worked with us for years, trusting us with their most critical projects.
Start Your Project
Tell us about your project and we'll get back to you within 24 hours with a tailored proposal.
Based in Madrid, we work with clients across Europe and globally. All projects include a free initial consultation to scope your requirements.