Hello, I'm Elías Castañeda

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Full Stack Developer crafting elegant, high-performance web applications with modern technologies and clean architecture.

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

Full Stack Developer & IT Engineer

With over 4 years of experience in software development, I specialize in building scalable web applications that combine beautiful interfaces with robust backend systems. My journey includes mentoring 500+ developers and reviewing 1,500+ code projects at Microverse.

Currently working as a freelance developer, I help businesses transform their ideas into production-ready applications using modern technologies like Ruby on Rails, React, and Next.js.

4+
Years Experience
50+
Projects Delivered
500+
Developers Mentored

Current Focus

  • AI-enhanced web applications
  • Real-time features with WebSockets
  • Performance optimization
  • Modern DevOps practices

Featured Projects

A selection of my recent work

Umbala Gym Website
Live Site
Client Work
React Rails API PostgreSQL

Umbala Gym

Full-stack fitness platform with class scheduling, membership management, and real-time booking system for a local gym.

Booking system Responsive design
FIS Certificaciones Platform
Live Site
Client Work
WordPress Custom Theme PHP

FIS Certificaciones

Professional certification platform for physiotherapy courses with student management, certificate verification, and payment integration.

Certificate system Student portal
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

Complete e-commerce platform with product management, shopping cart, payment integration, and admin dashboard.

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 I work with

Backend

Ruby on Rails Python Node.js PostgreSQL Redis

Frontend

React Next.js TypeScript Tailwind CSS Hotwire

DevOps & Tools

Docker Git Linux Kamal CI/CD

Testing

RSpec Jest Capybara Playwright TDD

Let's Work Together

Have a project in mind? Let's talk.

Get in Touch

I'm always interested in hearing about new projects and opportunities. The best way to reach me is through LinkedIn — send me a message there and I'll get back to you promptly!

Connect on LinkedIn
LinkedIn /in/eliasecasta
GitHub /eliasecasta
Mexico