Full-Stack Developer · San Salvador, El Salvador 🇸🇻 · Remote
9 products in production — Web · Mobile · Desktop
🌐 gcoder.dev · ✉️ me@gcoder.dev · 💼 LinkedIn
I build production systems end to end — from the database to the user's screen. Over ~3 years I've shipped 9 products to production for real companies: ERPs, multi-tenant SaaS, POS systems and mobile apps. I also run the infrastructure they live on, and I work AI-native with Claude Code every day.
- 🧾 55,000+ electronic invoices (DTE) issued across my systems
- 🗄️ 1.5M+ records migrated with zero data loss
- ⚡ Optimized a critical query from 71s → 0.25s
- 🐳 Solo-run production VPS: 7 apps, 12+ Docker Swarm containers, SSL, automated backups
| Project | What it is |
|---|---|
| novex (.nova) | A Tauri-first React framework with file-based routing — my own desktop app framework |
| mcp-el-salvador-dte | An MCP server exposing El Salvador's electronic-invoicing (DTE) domain as tools |
| Portfolio | gcoder.dev — Next.js 16, React 19, bilingual, with an AI assistant |
| 📚 Case studies | Deep-dive writeups of the products below — architecture, decisions & metrics |
Selected client work (private code):Atto — DTE e-invoicing SaaS (11 doc types, X.509 signing, 18k+ documents) · Gestión — multi-branch ERP with a native Tauri/Rust POS · UrbaNext — multi-tenant real-estate SaaS (Mapbox, WebSockets). → Read the case studies (architecture & outcomes, no proprietary code).
Full-stack TypeScript · NestJS architecture · Tauri/Rust desktop apps · electronic invoicing (DTE) · real-time systems · AI-native development.
Remote full-stack roles (LATAM / US timezones). Reach me at me@gcoder.dev.
Explore my work at gcoder.dev — 9 products, from database to screen.