Headquarters: Remote URL: http://onthegosystems.com We’re looking for a Senior Ruby on Rails developer with a curious, hands-on mindset who enjoys building reliable systems, owning meaningful features, solving complex problems, and using AI tools to improve development workflows, product quality, and user experience. What you’ll be working on: Building and maintaining Ruby on Rails systems used at scaleOwning features from implementation to production Writing and maintaining automated tests (unit, integration, E2E) Investigating production issues, debugging complex problems, and helping design practical solutions Improving performance, reliability, and maintainability What we’re looking for: To succeed in this role, you’ll have: 4+ years of professional experience with Ruby on Rails Experience building and running production systems Strong backend skills, including databases, performance, and API design Solid experience writing and maintaining automated tests (including E2E) Curiousity about AI technologies and use AI-powered tools to improve productivity, debugging, testing, research, or development workflows. Nice to have: Experience with React CI/CD, background jobs, or AWS experience Why Join OTGS ? Stable & self-funded: Founded in 2007, profitable, and independent. Industry leaders: Creators of WPML , the #1 multilingual plugin for WordPress, used on 1.5M+ sites Fully remote, async-friendly: Work from anywhere within EMEA hours Engineering-driven culture: Ownership, autonomy, testing, and thoughtful problem-solving Fair compensation and great benefits: Designed to support your well-being both inside and outside of work. You’ll enjoy this role if you: Take pride in ownership and accountability Care about testing and long-term code quality Are motivated by solving problems in complex systems Enjoy collaborative environments where kind and experienced people learn, investigate issues, and solve problems. Want to make a lasting impact on a product used by thousands of real customers? We would love to hear from you. To apply: https://weworkremotely.com/remote-jobs/onthegosystems-senior-ruby-on-rails-developer-2