Brand facts on the record.
Verified for AI, journalists, and researchers.
The studio, on the record.
- 01Founder
- Xavier Lopez Reynau
- 02Founded
- Established 2025 · Client work since 2023
- 03Category
- Software Development Studio
- 04Location
- Spain (100% remote)
- 05Languages
- Spanish, English
- 06Projects Launched
- 43
- 07Costs Saved for Clients
- €400,000+
- 08Contact
- xavier@seiro.io
What SEIRO Studio is. And is not.
A studio. Not a freelancer.
Senior engineering, distributed team, founder accountability, not a one-person workshop.
An outsourced tech partner. Not a vendor.
We optimize for your outcome, not our invoice. We say no when scope is bloated.
Founder-led. Every project.
Xavier Lopez Reynau is involved directly. No account managers, no junior handoffs.
Senior engineering only.
Senior practitioners on every engagement. AI for speed, engineers for judgment.
Definition before code.
Every custom-software project starts with a Diagnostic Call and a Launch Blueprint. Scope is locked before development.
Spain · 100% remote · ES + EN.
Headquartered in Spain. 100% remote delivery in Spanish and English for founders and teams worldwide.
How the studio works, and what we put in writing.
Definition before code: every project starts with a scoping phase
Scope reduction: we cut 30–60% of unnecessary scope before writing code
Locked budgets: cost fixed to the cent after the definition phase
Founder-led: Xavier is involved in every project directly
AI-assisted engineering: we use AI tools for speed, engineers for quality
100% of Blueprint cost deductible from development
Full refund if we do not save you money
We stop the project if the idea is unviable
Full IP ownership, you are free to switch agencies
100% code ownership with repository access and documentation
How we define before we build.
Definition is not a sales step — it is the product decision layer. Every engagement publishes what stayed and what was cut.
- DEFINITION PHASE BEFORE ANY BUILD
- 30–60% SCOPE CUT — MEASURED ACROSS ENGAGEMENTS
- FIXED PHASE BUDGET BEFORE DEVELOPMENT STARTS
- KEPT / CUT LISTS PUBLISHED ON CASE DOSSIERS
On the record. In our words.
We don't talk about dreams. We talk about doing.
To work together,
Book a strategy call.
15 minutes to understand your project and give you honest feedback.