Senior Ruby on Rails Developer

At EX Squared LATAM , we are a digital transformation company focused on building innovative, high-impact technology solutions that drive real business value. We partner with top-tier clients across global, regional, and local markets, fostering a collaborative, inclusive, and innovation-driven culture where your ideas truly matter.

Role Overview

We’re currently looking for a Senior Ruby on Rails Developer to join one of our client’s distributed technology teams and contribute to a multi-year modernization program for a major media and entertainment platform.

You’ll work on a large, high-traffic Ruby on Rails 8 application that serves as a public-facing website, editorial CMS, and integration hub for ticketing, event-management, and CRM systems. The work combines new feature development with modernization, performance improvements, security enhancements, and strengthening third-party integrations within an established production codebase.

Location

Fully remote position within LATAM.

Candidates must be able to maintain at least 4 hours of daily overlap with Eastern Time .

Contract Duration

Fixed-term contract with potential for extension.

Language Requirement

Advanced English. Professional fluency in written and spoken English is required.

What you’ll do

• Build and extend features across a large Rails 8 application, including models, controllers, background jobs, and server-rendered views.
• Develop interactive front-end experiences using Hotwire, Turbo Drive, Turbo Frames, Turbo Streams, Stimulus, and Tailwind CSS .
• Improve and extend an internal Rails-based CMS and contribute to component-based content authoring experiences.
• Build and strengthen integrations with third-party ticketing, event-management, and CRM platforms using REST APIs, webhooks, and scheduled synchronization.
• Design resilient integrations with retry logic, idempotency, failure handling, and automated reconciliation.
• Build and operate Sidekiq workflows with attention to concurrency, ordering, and failure scenarios.
• Design and develop versioned APIs supporting mobile applications and downstream consumers.
• Improve application and PostgreSQL performance ahead of high-traffic seasonal events.
• Implement caching strategies, contribute to load testing, and support CDN and automated scaling initiatives.
• Write meaningful automated tests and contribute actively to code reviews and technical decision-making.

What you’ll bring

• 5+ years of professional Ruby on Rails experience , including substantial experience working within large existing production codebases.
• Recent experience with Rails 7 or Rails 8 .
• Strong production experience with Hotwire, Turbo and Stimulus .
• Strong PostgreSQL knowledge, including schema and index design, query optimization, EXPLAIN analysis, and N+1 troubleshooting.
• Experience designing background jobs using Sidekiq or equivalent , including retry strategies, idempotency, queue isolation, and failure handling.
• Strong experience integrating third-party APIs and webhooks.
• Automated testing experience with RSpec or Minitest , request specs, and system/integration testing with Capybara.
• Strong semantic HTML and Tailwind CSS skills.
• Experience building accessible interfaces aligned with WCAG 2.1 AA .
• Familiarity with authentication, authorization, OAuth2/OIDC, token/session management, and role-based access control.
• Experience with observability practices including structured logging, metrics, and APM tools.
• Strong communication skills and the ability to work proactively within distributed teams.

What will make you stand out

• Experience deploying Rails applications on Heroku or another managed PaaS , together with AWS services such as S3.
• Experience with Hotwire Native on iOS or Android.
• Experience developing CMS or content-modeling solutions using Action Text, Trix, ViewComponent, Phlex, or component-based page builders.
• Experience with search technologies such as PostgreSQL full-text search, Elasticsearch, OpenSearch, Typesense, or Algolia.
• Experience supporting high-traffic or event-driven applications and performing load testing ahead of major traffic peaks.
• Experience with CDN and edge caching technologies such as Fastly or Cloudflare.
• Rails security remediation experience using tools such as Brakeman and bundler-audit….