> Markdown version of [/jobs/ext/3893185-sr-ruby-on-rails-developer](https://www.wearedevelopers.com/jobs/ext/3893185-sr-ruby-on-rails-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Ruby on Rails Developer. - **Company:** IRIS SOFTWARE - **Location:** United States - **Experience:** Expert - **Contract:** Contract - **Skills:** Query Performance, JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Application Performance Management, HTML5, Cascading Style Sheets (CSS), Cloud Computing, Code Review, Databases, Continuous Integration, Relational Databases, Database Schema, DevOps, Github, PostgreSQL, MySQL, Model View Controller (MVC), Object-Oriented Software Development, Ruby on Rails, Ruby, Memory Leaks, SQL Databases, Capybara, Rspec, Backend, Heroku, Integration Tests, Deployment Automation, Front End Software Development, Restful APIs, Software Version Control, Docker - **Published:** October 23, 2026 - **Apply:** https://www.dice.com/job-detail/514bf253-c628-4842-8671-df0e7d92e43c ## About the Role Framework: 4+ years of professional experience working exclusively with the Ruby on Rails ecosystem. Databases: Strong proficiency in relational databases like PostgreSQL or MySQL using SQL. Frontend Basics: Functional understanding of HTML5, CSS3, modern JavaScript, and asset compilation. State Management: Mastery of MVC (Model-View-Controller) architecture patterns and Object-Oriented Design. Gems & Tools: Prior experience using standard Rails gems like Devise, Pundit, and Webpacker. Version Control: Absolute proficiency with Git workflow commands and cloud hosts like GitHub. DevOps Basics: Experience with deployment automation platforms like Heroku, Docker, or AWS infrastructure ## Description We are seeking a skilled and innovative Ruby on Rails Developer to design, build, and maintain robust full-stack web applications. In this role, you will lead backend logic development, manage central databases, and ensure top performance across all user-facing services. You will work closely with frontend developers, product managers, and designers to turn business requirements into clean, production-grade solutions. Core Responsibilities Write Code: Design, build, and maintain clean, efficient, and scalable Ruby code. Develop APIs: Construct secure, RESTful APIs for frontend consumption and third-party integrations. Manage Data: Optimize database schemas, query performance, and data modeling using ActiveRecord. Build Tests: Implement automated unit and integration test suites using RSpec, Capybara, or FactoryBot. Optimize Performance: Identify and fix bottlenecks, memory leaks, and application performance errors. Maintain Security: Integrate authentication/authorization protocols and address software vulnerabilities. Handle Background Tasks: Set up background job processing queues using Sidekiq or Resque. Collaborate: Participate in Agile ceremonies, continuous integration sprint reviews, and peer code review