Gumaro Aragón — Full-Stack Developer

// tech stack

Tools I ship with

Every technology here is battle-tested in production across the Aragón ecosystem.

gumaro@aragon:~/ecosystem ~ cat stack.json

Runtime & Backend

Node.js Express Python Flask PHP WordPress

AI & Cloud

🤖 Claude Sonnet 4.6 ✨ Gemini 2.5-flash Cloud STT Cloud TTS 🧠 Agentic Loops 🔗 MCP

Frontend & Mobile

React Native 📦 Expo JavaScript 🎨 EAS Build

Infrastructure

Docker GCP 🔒 Tailscale ⚙️ PM2 SQLite 🔄 node-cron

Integrations

💬 WhatsApp 📞 Twilio 🛒 Loyverse 🧾 Facturama 🏛️ SAT CFDI 📱 Telegram

12+

Production Repos

Languages

20+

Integrations

24/7

Automated Ops

// projects

What I've built

End-to-end systems running live in a restaurant ecosystem in Culiacán, Sinaloa.

🤖

whatsapp-tacos-bot

WhatsApp ordering bot with Gemini 2.5-flash. 4-layer memory, dynamic skills, delivery zones (GPS + Haversine), Loyverse POS auto-registration, anti-injection.

Node.jswhatsapp-web.js Gemini 2.5-flashSQLiteLoyverse

</> View Code

⚡

tacos-aragon-api

Central API: Claude Sonnet agent with tool use, Loyverse sales, CFDI 4.0 invoicing, CFO proxy, WebSocket real-time, ticket archival (SQLite), resource monitoring.

ExpressClaude CLI WebSocketLoyverseSQLite

</> View Code

📱

tacos-aragon-app

Internal mobile dashboard for restaurant staff: sales charts, order management, invoicing, bot controls. React Native + Expo.

React NativeExpo EAS Buildexpo-av

</> View Code

🌐

tacos-aragon-web

Production Flask site with CFDI 4.0 invoicing form, Loyverse POS integration, Twilio webhooks, CSRF/CSP/HSTS security headers.

FlaskFacturama TwilioGeminiWaitress

</> View Code ▶ Live Demo

🏛️

tacos-aragon-fiscal

Automated SAT bulk CFDI downloader. Parses XML, generates Excel reports, runs AI fiscal analysis via intelligent agent.

Pythoncfdiclient SAT SOAPpandasGemini

</> View Code

📞

tacos-aragon-llamadas

Voice ordering pipeline: Twilio → Google STT → NLP agent → Loyverse POS → Google TTS → Twilio. Fully automated phone orders.

TwilioGoogle STT/TTS GeminiLoyverse

</> View Code

🔧

tacos-aragon-orchestrator

Self-healing watchdog via Docker Engine API. Health polling 30s, CPU priority management (work mode/normal), two-tier memory alerts, PMO auto-correction cascade.

Docker Engine APINode.js SQLiteTailscaleTelegram

</> View Code

🔌

tacos-aragon-wp

WordPress plugin with REST endpoints, CFDI 4.0 builder, Facturama PAC integration, Loyverse sync, and rate-limited admin panel.

PHPWordPress FacturamaLoyverse

</> View Code ▶ Live Demo

📨

telegram-dispatcher

Admin notification hub. Routes orchestrator alerts to Telegram with inline ✅ Approve / ❌ Reject buttons and persistent SQLite queue.

Node.jsTelegram Bot API SQLitebetter-sqlite3

</> View Code

📡

tacos-aragon-monitor

Quality monitor agent (Claude Sonnet 4.6 + tool use). Watches every conversation in real-time, detects pricing errors, proposes code fixes. 10 tools including read_file, edit_file, search_code.

Claude Sonnettool use Node.jsSQLite

</> View Code

💼

cfo-aragon-agent

AI CFO agent (Claude Sonnet via CLI, no API key). P&L, balance sheets, ISR/IVA calculation, SAT CFDI download + Gmail retention hunting, fiscal Excel export.

FastAPIClaude CLI cfdiclientSATSQLite

🔒 Private Repo

🛠️

pmo-agent

Autonomous code agent. Receives admin instructions via Telegram, spawns Claude Code CLI with MCP tools. Changelog system, agent relay, 7-layer safety, session management.

Node.jsClaude Code MCPPM2Telegram

</> View Code

🛡️

aragon-git-guardian

Pre-push security audit hook. 15 detection categories (secrets, phones, bank data, GPS, PII). Grep phase → AI analysis → auto-correction. Max 3 retries.

BashClaude Code HooksSecurity

</> View Code

// about

Who I am

A peek under the hood.

gumaro@aragon — bash — 80×24

❯ python profile.py

{
  "name": "Gumaro González",
  "aka": "Antonio Aragón (family business)",
  "location": "Culiacán, Sinaloa, MX",
  "timezone": "GMT-7",
  "role": "Owner, CTO & sole developer — Tacos Aragón (9 Docker containers on GCP)",
  "origin": "self-taught since 2020",
  "context": "I didn't build this for a client or a bootcamp demo.
                 I built it because I own the restaurant.",
  "what_that_means": [
    "Every system runs in production — real orders, real invoices, real customers",
    "I debug at 11pm when the WhatsApp bot goes down mid-service",
    "I understand the business problem behind every line",
    "No PM, no team, no safety net — just working software",
    "9 Docker containers, 4 AI agents, 1 human"
  ],
  "now": "open to freelance, consulting & full-time AI/backend roles",
  "status": AVAILABLE
}

❯

Gumaro Aragón
Full-Stack Engineer

Tools I ship with

Runtime & Backend

AI & Cloud

Frontend & Mobile

Infrastructure

Integrations

What I've built

Who I am

Let's build something

Gumaro Aragón Full-Stack Engineer

Tools I ship with

Runtime & Backend

AI & Cloud

Frontend & Mobile

Infrastructure

Integrations

What I've built

Who I am

Let's build something

Gumaro Aragón
Full-Stack Engineer