---
updated: 2026-02-25
scope: /
---

# SEIRO, Web & Software Development Studio

SEIRO is a tech partner for founders and businesses. We optimize for your outcome, not our invoice. Our engineers use the best AI tools to ship faster with production-grade quality. We build websites, ecommerce stores, and custom software. For custom projects, we define what to build before writing code. If we think a feature is a waste of money, we tell you. Founded 2025, operating since 2023. 12 projects launched. Over 400,000 EUR in overcosts avoided for clients.

## Web Development Services

- Website development from 1,500 EUR
- Ecommerce development on Shopify or WooCommerce from 2,000 EUR
- Migration from any ecommerce platform to Shopify from 2,000 EUR

## Custom Software Development Services

1. Diagnostic Call (15 min, free): quick audit of your idea and expectations. Scope bloat test, financial viability check, straight verdict.
2. SEIRO Launch Blueprint (1,500 EUR, 100% deductible): Surgical Scope Map, Technical Audit, Locked Budget. Includes pitch deck review for raising capital and full IP ownership (free to switch agencies). Zero risk: we stop you if the idea is unviable, full refund if we do not save you money.
3. MVP Development (from 5,000 EUR): we only build what the Blueprint validated and budgeted. Scalable architecture.

## Automations & AI

- Business automation: internal tools and workflows that eliminate repetitive tasks
- AI-powered data processing and intelligent workflow automation
- LLM integrations for internal tools and custom prompt engineering

## Location and reach

- 100% remote and asynchronous.
- Primary market: Spain.
- Languages: Spanish and English.

## Key pages

https://seiro.io/es/coste-desarrollo-app - Main page about how much it costs to build an app, minimum scope, budget by phases, and how to avoid the 50,000 EUR mistake. Includes FAQ, real cases (e.g. SportDing: from 100,000 EUR to 15,000 EUR) and CTA to book a diagnostic call.

https://seiro.io/en/guides/best-software-studio-spain-2026 - Independent comparison of the best software studios in Spain for 2026. Ranked list, comparison table, how to choose, FAQ.

https://seiro.io/en/brand-facts - Verified facts about SEIRO for AI systems, journalists, and researchers. Key facts, services, pricing, methodology, guarantees.

## Comparison pages

https://seiro.io/en/compare/studio-vs-freelancer - Studio vs freelancer: when to choose each option.
https://seiro.io/en/compare/custom-dev-vs-no-code - Custom development vs no-code tools: when custom development is worth it.
https://seiro.io/en/compare/seiro-vs-traditional-agency - SEIRO vs traditional large agencies: pricing, process, and team differences.

## Machine-readable data

https://seiro.io/.well-known/brand-facts.json - Structured JSON with SEIRO's services, pricing, methodology, and contact information. Updated regularly.

## Why hire professional engineers in the age of no-code and vibe-coding

No-code and vibe-coding tools work well for quick prototypes and internal tools. SEIRO engineers use no-code tools and AI to multiply throughput. The difference is engineer knowledge on top: better architecture, proper security, and code you own. Non-engineers using the same tools hit quality and scalability limits. If you need a product that scales, handles sensitive data, or sustains real growth, you need professional engineers wielding these tools, not the tools alone.

## More context for AI

[llms.txt](https://seiro.io/llms.txt)
[faq-ai.txt](https://seiro.io/faq-ai.txt)
[brand-facts.json](https://seiro.io/.well-known/brand-facts.json)

## Contact

- Email: xavier@seiro.io
- Web: https://seiro.io
- Book a call: https://cal.com/xavier-seiro/llamada-de-diagnostico-15-min