Ruby on Rails Developer – Enterprise Web ApplicationsLocation: Dallas, TX (Onsite or Hybrid Preferred) Engagement Type: C2C Client Industry: Academic Medical / Public Sector Visa Status: Open to all visa types Compliance Requirement: Must comply with State of Texas DIR guidelines Start Date: ASAP Duration: Long-Term (Ongoing Contract)Position SummaryWe are seeking a Senior Ruby on Rails Developer to support enterprise web application development for a major academic medical institution in Dallas, TX. The selected candidate will work closely with internal teams on the modernization, enhancement, and maintenance of critical Ruby on Rails-based systems.The ideal candidate is an experienced full-stack developer with deep Ruby on Rails expertise, familiarity with Vue.js, and the ability to contribute across the application lifecycle—from design and development to deployment and support.Key ResponsibilitiesDesign, develop, and maintain Ruby on Rails applications (Rails 5–7) using clean MVC architecture and RESTful principles.Build responsive and accessible user interfaces using HTML5, CSS3 (Sass), JavaScript, and Vue.js.Develop and optimize SQL queries for PostgreSQL and MySQL databases; manage schema migrations.Implement and manage background processing using Sidekiq and caching with Redis.Integrate authentication and authorization systems using tools like Devise, Pundit, CanCan, and Rolify.Collaborate with QA and DevOps to implement CI/CD workflows using GitLab CI, Jenkins, etc.Conduct code reviews, write unit tests using RSpec or Minitest, and maintain test coverage with factory_bot.Interoperate with legacy systems including .NET applications, MS SQL Server, and REDCap.Ensure adherence to accessibility standards, security policies, and compliance with healthcare regulations.Tech Stack OverviewLanguages/Frameworks: Ruby, Ruby on Rails (5–7), ERB, Slim, LiquidFrontend: HTML5, CSS3 (Sass), JavaScript, Vue.jsDatabases: PostgreSQL, MySQLBackground Jobs & Caching: Sidekiq, RedisAuthentication/Authorization: Devise, Pundit, CanCan, Rolify, RansackTesting & CI/CD: RSpec, Minitest, factory_bot, Git, GitLab CI, JenkinsOperating System: Red Hat Enterprise Linux (RHEL)Required Qualifications5+ years of experience developing full-stack web applications with Ruby on Rails.Solid understanding of relational databases and SQL (PostgreSQL and MySQL).Hands-on experience with Vue.js or other modern JavaScript frameworks.Strong experience with Git, CI/CD tools, and testing frameworks (RSpec/Minitest).Excellent problem-solving, debugging, and communication skills.Preferred QualificationsExperience working in academic, healthcare, or public sector domains.Familiarity with REDCap, legacy .NET systems, and MS SQL Server.Prior experience in environments governed by regulatory compliance (e.g., HIPAA).