Jesús Imanol Castillo, Chuy

tilín

Available

For projects

Chiapas, MX · 2026

Full stack developer who builds with structure first… and with style after.

Friends call me Chuy · Software Engineering · Universidad Politécnica de Chiapas

bugs · spaghetti

In production

Projects people actually use

Real businesses and people use them every day. If you want something like this for your business, I'll send you a no-strings quote.

alwayswithyou.online
AlwaysWithYou — SaaS platform · Digital invitations

LiveSaaS platform · Digital invitations

AlwaysWithYou

Digital invitations for weddings and quinceañeras: every event gets its own subdomain, a personal link and QR per family, RSVP, door check-in and a guest photo album.

  • Dashboard for the agency and the couple
  • One subdomain per event
  • QR + door check-in
  • Next.js 16
  • Supabase
  • RLS
  • Cloudflare Workers
  • TanStack Query
  • Vitest
carnitasnoyola.chuy7x.space
Carnitas Noyola — Business website · Restaurant

LiveBusiness website · Restaurant

Carnitas Noyola

Website for a carnitas shop from Chiapas expanding to Los Cabos: menu, an order builder that sends to WhatsApp, a store tour, reviews and local SEO in Spanish and English.

  • WhatsApp ordering
  • Spanish and English
  • Local SEO for Los Cabos
  • Next.js 16
  • MVVM
  • anime.js
  • SEO local
  • WhatsApp
emilia-bonita-coffee.jaguarmind.network
Emilia Bonita — Business website · Coffee shop

LiveBusiness website · Coffee shop

Emilia Bonita

Landing for a coffee shop in Huixtla, Chiapas: full menu with options (flavor, size, toppings), a cart and an order that writes itself and goes straight to WhatsApp. No backend, no fees.

  • Menu with options and cart
  • Orders straight to WhatsApp
  • No per-sale fees
  • Next.js 16
  • Motion
  • Zustand
  • Tailwind 4
  • WhatsApp
fiadoma

LiveMobile app · Corner stores

Fiadoma

An app for corner stores to track customer credit without a notebook: customers, debts, payments and history, with per-business login. Built with Flutter and Clean Architecture on Supabase.

  • Credit and payments per customer
  • One business, many users
  • Android, iOS and web
  • Flutter
  • Supabase
  • Clean Architecture
  • Provider

Got a business or an idea?

Websites that sell through WhatsApp, platforms with a dashboard for your clients, or mobile apps. Tell me what you need and I'll quote it.

Message me on WhatsApp

What I've built

Projects with tilín

Celular con mapa, pin pixelado y pirámide de cubos
It recommends tacos based on where you are. You're welcome.

2026Frontend / UX-UI

ConoceMex

Talent Land México

Flutter app + Next.js PWA on Supabase (PostGIS, Edge Functions, RLS), Mercado Pago OAuth and geolocated recommendations over an event-driven modular monolith.

  • Flutter
  • Next.js
  • Supabase
  • PostGIS
  • Mercado Pago
See it live
Terminal de pago con código QR y monedas pixeladas
You pay with a QR. The coffee doesn't pay for itself. Yet.

2025Frontend & Mobile

Monii

Monilio Tech Solutions

Cashless fintech: React PWA + Vue/Ionic app with QR scan-to-order, offline-first storage, a service layer, over 70% test coverage and CI/CD.

  • React
  • Vue
  • Ionic
  • PWA
  • Vitest
Máquina de palomitas con lector de tarjeta sin contacto
Tap the card, popcorn comes out. Serious engineering.

2025Full Stack

CineSnacks

Node.js e-commerce with Mercado Pago and an IoT module that links NFC cards to a physical snack dispenser.

  • Node.js
  • Mercado Pago
  • NFC
  • IoT
Maceta con cilantro pixelado y un sensor IoT
This cilantro has better monitoring than your server.

2025Backend (Go)

Cilantro App

Real-time AgroTech monitoring: concurrent IoT ingestion with goroutines and channels, streamed over WebSockets.

  • Go
  • Goroutines
  • WebSockets
  • IoT
Nube con servidor y un cursor pixelado despegando
Friday deploy. Nothing broke. Tilín.

2024Full Stack

Lambi

Angular + FastAPI on AWS RDS; 70% faster deployments with EC2 and CI/CD pipelines.

  • Angular
  • FastAPI
  • AWS
  • CI/CD
Cubo con candado pixelado y una máscara anónima
Truly anonymous. Even I don't know who did it.

2024Full Stack (Web3)

Secret Event

2nd place · UP Chiapas Hackathon

Anonymous reporting system with Rust smart contracts on Gear Protocol.

  • Rust
  • Gear Protocol
  • Smart Contracts

My favorite word (and my favorite snack)

TILÍN

Friday deploy? Tilín.

It's what you say when something works. Also when it breaks so badly it's funny. In my code it's usually the first one. Scroll up and down: I eat it and give it back.

How I think about software

Systems over snippets

  1. 01

    Architecture is a decision, not an accident.

    Domains, boundaries and contracts come before implementation.

    Blueprint first. Smile later.

  2. 02

    Simple beats clever.

    The best code is the code the next person understands.

    If you need a diagram to read an if: tilín.

  3. 03

    Correctness is proven, not assumed.

    Tests and CI are the contract the system has to honor.

    “Works on my machine” is not a test.

  4. 04

    Fundamentals outlast frameworks.

    Tools change every year; data structures, design and trade-offs don't.

    I wrote a compiler. New frameworks make me laugh.

  5. 05

    Tools amplify judgment — they don't replace it.

    I use AI to move faster inside a design I understand. Every line I ship is a line I can explain.

    AI writes. I decide. Tilín.

What I work with

My toolbox

Two fronts: backend with Go, Node.js and Supabase; client with React, Next.js, Vue and Flutter. Frameworks change; fundamentals stay.

Languages

  • Go
  • TypeScript
  • JavaScript
  • Dart
  • Python
  • Java
  • Kotlin
  • PHP
  • Rust

Frontend & Mobile

  • React
  • Next.js
  • Vue
  • Angular
  • Flutter
  • Android
  • Ionic
  • Capacitor
  • PWA
  • Tailwind
  • Vite

Backend & Data

  • Node.js
  • Express
  • FastAPI
  • Django
  • Supabase
  • PostgreSQL
  • MySQL
  • MongoDB
  • RabbitMQ

Cloud & DevOps

  • AWS
  • GCP
  • Docker
  • Vercel
  • GitHub Actions
  • Linux
  • Arduino
  • Figma

Architecture

  • Event-Driven
  • Modular monolith
  • Microservices
  • Hexagonal
  • Clean Architecture
  • Offline-first
  • SOLID
  • TDD
  • OAuth 2.0
  • JWT + RLS
  • WebSockets

With AI (still thinking)

  • Claude Code
  • GitHub Copilot
  • Cursor
  • MCP

Certifications

  • AWS Academy · Generative AI Foundations
  • AWS Academy · Cloud Architecting
  • AWS Academy · Cloud Developing
  • AWS Academy · Cloud Operations
  • AWS Academy · Cloud Foundations
  • Cisco · Operating Systems Support
  • Cisco · Operating Systems Basics
  • Cisco · Networking Basics

So, what's next?

Shall we build it?

If you're looking for someone who designs the boundaries before writing the first line, and laughs while doing it, send me a message. I reply fast. Tilín.