Websites, custom software, SaaS and more.
MDC21 is an independent software development studio for companies in Spain and the European Union. We design, build and maintain production systems for teams that need them done right — marketing websites, e-commerce, custom Laravel platforms and SaaS products.
What we launched.
A short selection of recent projects in production. The rest lives on the work page.
Ficharix
A multi-tenant SaaS that turns Spain's mandatory time-tracking law into a polished product: tamper-proof cryptographic chain, per-company panel, mobile app and automated reports.
CEE Perspective
A learning and events platform for the association bringing Central and Eastern Europe’s financial voice to EU policy — publications, webinars and an academy.
What we do.
Clear scope and one point of contact from start to finish. Before we start, you get a concrete proposal.
Websites
Landing pages, corporate sites and bespoke e-commerce. Fast load times, technical SEO and a panel so your team edits content without touching code.
Custom software
Internal apps, admin panels and operational platforms. We replace spreadsheets, Frankenstein tools and one-size-fits-all SaaS with software that understands your process.
SaaS & Micro-SaaS
We co-build your SaaS from discovery onward: design, engineering, Stripe billing, metrics and everything that does not shine but decides whether the product survives.
Maintenance & care
Monthly contracts for software already in production. Engineering hours, security patches, 24/7 monitoring and response during business hours. No scope creep, no invoice surprises.
Cybersecurity
Technical audits, infrastructure hardening and incident response planning. We identify OWASP risks, configure defences and leave an actionable report. Before the incident, not after.
How we work.
Every project is different, but the path looks the same. Four phases, one contact, regular check-ins.
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01 · You leave with a written scope
Starting point
A short paid work session where we listen, write the scope with you, model the data and estimate effort per phase. You walk away knowing what we would build and what it would cost — with a clear go / no-go.
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02 · You see a clickable prototype
Design
From wireframe to a navigable prototype reviewed every week. We design in the browser so what you click is what gets built.
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03 · You see progress regularly
Build
Short sprints with regular check-ins and a staging URL from the first week. You see what we are building as we build it — no silent months, no surprises at handoff.
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04 · You own everything
Care
Hand-off or a maintenance retainer — your choice. Either way the code, the infrastructure and the docs are yours from day one.
What you can expect.
You see every euro
We estimate by phase before starting and you approve each one. No hidden hours, no expanding scope, no surprises in the invoice.
You own everything
Code, infrastructure, documentation — all yours from day one. No vendor lock-in. If we walk away tomorrow, another team can pick it up on Monday.
You see progress regularly
Short sprints with regular check-ins and a staging URL you can show your team from day one. No silent months, no "trust us, it is almost done".