About SEIRO
We think before we build.
SEIRO is a software studio founded on one idea: most projects fail because teams build the wrong thing, not because of bad code.
We start every engagement with a definition phase: understanding the problem, cutting unnecessary scope, and planning what needs to exist. Then we build it.
What we believe
We optimize for your outcome, not our invoice. Weak definition kills more projects than bad code.
If you don't know exactly what to build, no amount of engineering talent will save the project.
That's why every SEIRO project starts with a definition phase before any code is written.
Your success over our revenue
We stop projects when they won't work instead of billing for months. Our reputation depends on outcomes, not hours.
Engineers with AI
AI tools let our engineers deliver in weeks what used to take months. Every line is architected, reviewed, and hardened for production.
Definition before code
We invest time upfront to understand the real problem, define minimum scope, and plan milestones. It is the highest-ROI work in any project.
Built to evolve
We architect for change, not perfection. Clean foundations let you add features and scale without rewriting.
Founder
Xavier Lopez Reynau
Xavier started SEIRO after seeing the same pattern repeat across companies: teams spending months and significant budgets building software that missed the mark. Not because of poor engineering. Because nobody defined what to build first.
He leads every project directly. No account managers, no handoffs. You work with the person making the technical and strategic decisions.
How we work
Distributed & async
Our team works across time zones. Communication is clear, documented, and async-first. Meetings only when they add value.
Founder-led
Xavier is involved in every project. You always have direct access to the person making decisions.
Selective
We take on a limited number of projects so every client gets full attention and senior-level work.
AI-powered engineering
Our engineers use the best AI tools for architecture, code generation, and testing. A small team delivers the speed and quality of a much larger one.
Join our network
We collaborate with independent engineers and designers who think like product owners. If our approach resonates with you, we'd like to hear from you.
Contact: xavier@seiro.io