RinosCMS
A multi-tenant commerce platform replacing Shopify Plus, built in-house by the Rinos team on a single VPS. I work across the whole stack.
- 17shops
- 16countries
- 7tenants
click to flip Designed. Built. Shipped.
I don't specialize. I own the loop: from what it looks like to what runs it.
The product
Web apps, dashboards, interfaces. Built to be used every day, not to look good in a handoff doc.
Sites and launches
Brand, pages, and the campaign around them. One person makes the calls on look, copy, and code so the message doesn't get lost in the handoff.
Built with AI, owned by me
Over a year of daily Claude Code. My own MCP for routing tasks between models. The speed is real and so is the accountability.
Compliant from the first commit
GDPR, consent, and accessibility built in from the start. I've dealt with the real legal layer in practice, not from a checklist.
Selected work
click to flip gbMail
An encrypted email service for teams. Zero-knowledge accounts, shared mailboxes, and a full mail stack running on infrastructure I operate myself.
click to flip EU Privacy Lab
Privacy compliance for the next EU generation: pixel-art essays on GDPR, consent, and AI rules, set over Monet paintings.
click to flip Daydreaming
A native macOS task manager built on a Branch, Space, Task model, with dream-inspired themes and real-time collaboration. Flip it between Midnight Shift and Dawn.
click to flip GPMS
A full-stack team platform with real-time chat, kanban, HR tools, expense tracking, and documents in one place. Deployed and free for small organisations to run.
click to flip I build it. I run it. It’s the same job.
fjgbuLab is me, Javi. I’m the engineer and co-operator at Rinos, a commerce platform I built from scratch and now run across 17 shops in 16 countries. That means I’ve owned things most devs haven’t touched: Amazon Selling Partner API access from scratch, integrations across Shopify, Baselinker, and a custom ERP, and the legal layer that sits underneath all of it. I also built my own MCP to route tasks between models, because the tools you use every day should work the way you think. You’re hiring the person who’s done the whole loop, not someone who’s read about it. Based in Berlin.
Scope
One short call. You leave with a first milestone and a price, not a follow-up.
Build
A working build you can click every week. Progress you can use, not slides about it.
Ship
Deployed to production, documented, and handed over so it runs without me.
- FastAPI
- Next.js
- React
- Astro
- SwiftUI
- PostgreSQL
- Cloudflare Workers
- Socket.io
- Tailwind
- GSAP
Wanna talk?
Finish the sentence and send it. It reaches me directly, and I reply within a day.