Hello, I'm Elías Castañeda

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Full-Stack Product Engineer delivering real client applications, from architecture and AI-assisted development to production.

View My Work Get In Touch
// Building the future const developer = { name: 'Elías Castañeda', role: 'Full-Stack Product Engineer', stack: ['Rails', 'React', 'Next.js'], passion: 'Reliable Delivery' };
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About Me

Full-Stack Product Engineer & IT Engineer

I build and maintain web applications used by real clients, combining frontend and backend engineering with testing, deployment, and production support. At Microverse, I also gained extensive experience in code review, mentoring, and remote technical team collaboration.

Today I use AI coding agents to accelerate implementation while keeping ownership of requirements, architecture, code review, automated verification, and reliable software delivery. My client work includes Umbala and FIS Certificaciones.

2
Featured Client Platforms
300+
Code Reviews
100+
1:1 Technical Sessions

Current Focus

  • AI-assisted product engineering
  • Full-stack client applications
  • Automated testing and CI/CD
  • Production operations and reliability

Featured Projects

Client work and independent engineering projects

Umbala Gym Website
Live Site
Client Work
React Express.js PocketBase

Umbala

Production wellness platform with class reservations, credit-based memberships, payment integrations, and admin operations.

Class reservations Responsive platform
FIS Certificaciones Platform
Live Site
Client Work
Next.js TypeScript PocketBase

FIS Certificaciones

Custom learning management system developed beyond a legacy WordPress setup, with courses, quizzes, certificates, student access, and administrative workflows.

Certificates and quizzes Role-based access
Site Analysis Dashboard
Live Demo
Client Work
FastAPI Leaflet.js Python

ArchiSite AI

Professional architectural site analysis tool generating technical sheets from geographic coordinates. Features 11 analysis modules powered by real geospatial APIs.

11 analysis modules Export to PNG/PDF
Riven ROI Dashboard
Live Demo
Private Project
Next.js TypeScript Tailwind

Riven ROI

Advanced Warframe analytics dashboard tracking market trends, pricing volatility, and trading opportunities for Riven mods.

Real-time analytics Market data API
Global Metal Buildings Website
Live Site
Client Work
Bootstrap HTML5 CSS3

Global Metal Buildings

Corporate website for a metal building construction company featuring project galleries with lightbox, service showcase, quote request forms, and SEO optimization.

Project gallery Quote forms
AbiLoadoutAI Interface
Private Project
Rails 8 OpenAI Hotwire

AbiLoadoutAI

Full-stack Rails 8 platform with OpenAI integration that generates optimized gaming loadouts. Features JWT auth, Sidekiq background jobs, and a Hotwire-powered reactive UI.

OpenAI integration Sidekiq + Redis
E-commerce
Client Work
Rails 8 Hotwire Docker

Mercado Digital

Rails-based e-commerce project exploring product catalogs, storefront workflows, and administration.

Payment system Inventory management
Discord Bot
Private Project
Ruby Discord API PostgreSQL

The Hive Discord Bot

Feature-rich Discord bot for the V Rising gaming community with gear tracking, build sharing, and automated server management.

Bot automation Community tools
REST API
Private Project
Rails API JSON Redis

V Rising API

Comprehensive RESTful API serving game data for V Rising, with real-time updates and caching for optimal performance.

API endpoints Cached responses

Interested in seeing more of my work?

View All on GitHub

Tech Stack

Technologies and practices used to ship software

Backend

Ruby on Rails Express.js Node.js PostgreSQL PocketBase

Frontend

React Next.js TypeScript Tailwind CSS Vite

DevOps & Tools

Docker Git Linux GitHub Actions CI/CD

Testing

RSpec Jest Vitest Playwright TDD

Let's Work Together

Open to remote engineering opportunities with US and European teams.

Get in Touch

I'm interested in international remote Full-Stack and Product Engineering roles, especially with teams using AI to deliver software responsibly. Reach me through LinkedIn to discuss an opportunity.

Connect on LinkedIn
LinkedIn /in/eliasecasta
GitHub /eliasecasta
Mexico · Open to US/EU remote work