Hi, I'm Julio 👋
Full stack developer. I like owning the whole project: designing the database, writing the API, building the front end and shipping it.
17 years oldNationalities:BrazilSpain
JR

About

My main project is Afetum, a SaaS by Skurt Brasil where I work as a full stack developer.

I also work full stack on Gestiona Pública, a large platform for handling documents and procedures with Spain's public administration: clients, case files, deadlines, documents and automated filings with the AEAT, the Spanish Tax Agency.

Besides that, I build projects for clients, like Next.js websites for businesses in Spain and Andorra and the RZ Importados online store.

I take on projects in Portuguese, Spanish and English.

Experience

Stack

TypeScript
JavaScript
React
Next.js
Tailwind
Node.js
Express
Fastify
PostgreSQL
SQLite
Supabase
Zod
React Hook Form
Vite
Keycloak
Playwright
Docker
Cloudflare
Mercado Pago
Projects

What I've built

From the products I work on every day, Afetum and Gestiona Pública, to custom websites and online stores for clients in Brazil, Spain and Andorra.

Afetum
Website

Afetum

Skurt Brasil

SaaS for creating personalized pages with photos, messages, music and animations, built for Skurt Brasil. I work across the full stack: front end, API, authentication, database and integrations.

TypeScript
Next.js
Node.js
Supabase
Gestiona Pública

Gestiona Pública

Current role
Private

Multi-tenant platform for handling documents with Spain's public administration: clients, case files, deadlines and approvals. A Playwright worker runs the filings on the AEAT portal and stops whenever a person is needed.

TypeScript
React
Fastify
PostgreSQL
Playwright
Momentum Andorra

Momentum Andorra

Client project
Private

Website for a wellness and gastronomy experiences business in Andorra, fully in Spanish.

TypeScript
Next.js
Tailwind
Nexo

Nexo

Client projects
Private

5 Next.js websites for clients, one per industry: restaurants, law firms, beauty, pharmacies and pet businesses.

TypeScript
Next.js
Tailwind
RZ Importados

RZ Importados

Client project
Private

Complete online store built for a client's business: catalog, cart, orders, shipping by postal code, Mercado Pago payments and an admin panel with reports. Custom backend with 61 endpoints and 15 tables.

JavaScript
Node.js
Express
PostgreSQL
Mercado Pago
Sonic · Guilherme Pires

Sonic · Guilherme Pires

Muay Thai · Imperium
Private

Website for Imperium Muay Thai athlete Guilherme ‘Sonic’ Pires. Showcases his story, fight record and achievements, with a gallery of 19 photos organized by fight, responsive images and a highlight video with slow-motion control.

TypeScript
React
Vite
Tailwind
Numbers

The code in numbers

All of GitHub: public, private and collaborative repositories. Reviewed on October 11, 2026.

Lines on GitHub
318,367
HTTP routes
100
Database tables
28
Repositories
15

Total lines in tracked text files on the default branch of all 15 repositories: code, configuration, documentation, comments and blank lines. Each repository is counted in full, including Afetum and Risco. Routes and tables: RZ Importados and Gestiona Pública.

Languages and formats · by lines

  • TypeScript32.4%
  • JSON25.6%
  • CSS18.5%
  • Rust4.8%
  • JavaScript4.2%
  • Other14.5%
Contact

Let's talk

Have a project in mind? Reach out by email or on Instagram. I work in Portuguese, Spanish and English.

juliorosana925@gmail.com@diexangaiGitHub
GitHub