The Role
We are looking for a Senior Fullstack Ruby on Rails Developer to join one of our high‑growth client teams. In this role, you will be a key driver of the application's lifecycle, writing clean, idiomatic Ruby code to build robust backend features while ensuring a smooth, highly interactive frontend user experience.

You will help the client leverage the "Rails way" to ship features quickly, without sacrificing long‑term maintainability, testability, or performance. This is an adecuado position for a developer who appreciates the elegant architecture of Rails but understands how to optimize database queries, scale background workers, and deliver a modern interface.

Qualifications
- 5+ years of production experience building and scaling applications using Ruby on Rails (Rails 6/7) and modern Ruby 3.x features.
- Strong proficiency with frontend assets in Rails. This includes deep experience with Hotwire (Turbo/Stimulus) OR modern SPA frameworks like React.js or Vue.js connected via a Rails API.
- Deep knowledge of PostgreSQL or MySQL,



specifically in writing complex ActiveRecord queries, optimizing indexes, and managing database migrations safely at scale.
- Extensive experience managing background jobs, race conditions, and heavy data processing using Sidekiq and Redis.
- A strict habit of writing maintainable test suites using RSpec, Capybara, or FactoryBot to ensure high test coverage and stable deployments.
- Proven track record of designing, securing, and documenting clean RESTful APIs.
- Solid understanding of Git workflows, Docker containerization, and asset compilation pipelines (Propshaft, Webpacker, or Vite Ruby).

Nice‑to‑Have
- Experience migrating legacy Rails applications to newer versions.
- Familiarity with cloud platforms (AWS, Heroku, or Render) and CI/CD pipelines.
- Understanding of domain‑driven patterns within Rails to keep large codebases decoupled.
- Knowledge of web security best practices (OWASP Top 10, cross‑site scripting prevention

📌 Senior Ruby on Rails Fullstack Engineer — Remote (Ciudad de México)
🏢 Proxify
📍 Ciudad de México