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HeyArnoldo/README.md

Hey, I'm Joao 👋

At 19, my code already bills in two countries.
Software Engineering student by day · Software Developer @ GroowTech by night.
I ship ERPs and AI agents to production for SMEs across Perú and México.

Portfolio LinkedIn Location


🧠 About

Every line of code I write ends up in production — not in a sleeping GitHub repo. Clean architecture, performance and UX: I care about every pixel and every millisecond.

  • 🏗️ Building vertical SaaS and ERPs for LATAM SMEs at GroowTech
  • 🤖 Working on agentic systems — Planner-Executor + Critic/Verifier patterns on top of LLMs
  • ☁️ Running my own cloud: self-hosted on Oracle Cloud ARM + Coolify
  • 🎓 Software Engineering @ UTP · Top 10% · Vice-Chair IEEE Computer Society UTP
  • 🥇 1st place — Master LEAD Hackathon 2026

🚀 Systems live in production

Project What it does Stack
MayordomoAI Personal finance assistant on WhatsApp with an agentic core (Planner-Executor + Critic/Verifier) and cross-channel memory NestJS · OpenAI API · BullMQ · Redis · PostgreSQL
ColportAI PWA for field sales agents — client portfolios, installment billing and automated WhatsApp follow-up NestJS · PostgreSQL · Evolution API · Baileys
NaturalEli Production ERP for a Mexican supplement laboratory — inventory and manufacturing control NestJS · React · PostgreSQL · Docker
Oxalands.com Real estate portal for Oxapampa with interactive map and dual USD/PEN pricing Next.js · PostgreSQL · Mapbox

🛠️ Stack

Languages & Core

TypeScript JavaScript Python SQL

Backend

NestJS Node.js PostgreSQL MongoDB Redis TypeORM

Frontend

React Next.js Tailwind Electron

AI & Agents

OpenAI Azure MCP BullMQ

Infra & DevOps

Docker Linux Oracle Cloud Coolify Cloudflare Git


💬 Let's talk

If you're building in production and want to talk about agents, ERPs or self-hosted infra — my inbox is open.

I ship code. Not notebooks.

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  1. MayordomoAI MayordomoAI Public

    MayordomoAI 🤖💸 | A reasoning agent that manages your personal finances over WhatsApp and the web — built on Microsoft Foundry.

    TypeScript 2

  2. TemplateFullStack TemplateFullStack Public template

    Template fullstack listo para producción: React 19 + Vite 7 + Tailwind v4 + shadcn/ui en el frontend, NestJS 11 + TypeORM + PostgreSQL 16 en el backend, todo en un monorepo pnpm con schemas Zod com…

    TypeScript 1

  3. HackatonMasterLead HackatonMasterLead Public

    Yachai — Copiloto pedagógico con IA para docentes rurales. Accede con las credenciales: admin@admin.com : admin

    TypeScript 1