Senior Ruby on Rails Engineer

<h3>Senior Ruby on Rails Engineer </h3><p style="line-height:1.38;margin-top:16px;margin-bottom:16px;">We are looking for a Senior Ruby on Rails Engineer to help us build reliable, scalable products and apply AI/LLM technologies where they create real value.</p><p style="line-height:1.38;margin-top:16px;margin-bottom:16px;">This is a hands-on engineering role for someone who can own complex features end to end, make strong technical decisions, and work across backend architecture, production systems, testing, and AI-assisted product development.</p><p style="line-height:1.38;margin-top:16px;margin-bottom:16px;">You should be excited about AI, but pragmatic enough to know when a simple, deterministic solution is better than an LLM call.</p><hr><h3 style="line-height:1.38;margin-top:19px;margin-bottom:5px;">What you'll be working on:</h3><ul><li style="list-style-type:disc;">Owning features from technical design to production</li><li style="list-style-type:disc;">Building and maintaining Ruby on Rails systems used at scale</li><li style="list-style-type:disc;">Designing AI/LLM-assisted features and workflows where they improve product quality or user experience</li><li style="list-style-type:disc;">Working with LLM APIs, prompts, retrieval/context strategies, and AI-assisted development tools</li><li style="list-style-type:disc;">Making trade-offs around performance, reliability, cost, latency, security, and maintainability</li><li style="list-style-type:disc;">Writing and maintaining automated tests, including unit, integration, and E2E tests</li><li style="list-style-type:disc;">Debugging production issues and improving system reliability</li></ul><hr><h3 style="line-height:1.38;margin-top:19px;margin-bottom:5px;">What we're looking for:</h3><h3>To succeed in this role, you'll have:</h3><ul><li style="list-style-type:disc;">Strong professional experience with Ruby on Rails, ideally at senior level</li><li style="list-style-type:disc;">Experience building and running production systems used by real customers</li><li style="list-style-type:disc;">Strong backend skills, including databases, API design, performance, background jobs, and security;</li><li style="list-style-type:disc;">Ability to break down ambiguous problems and propose practical technical solutions</li><li style="list-style-type:disc;">Hands-on interest or experience with AI/LLM technologies, </li><li style="list-style-type:disc;">Good judgment about when to use AI and when simpler engineering approaches are better</li><li style="list-style-type:disc;">Strong testing habits and care for long-term code quality</li><li style="list-style-type:disc;">A responsible, curious, flexible mindset: willing to debug, deploy, investigate, learn, and own outcomes</li></ul><h3>Nice to have: </h3><ul><li style="list-style-type:disc;">Experience with React</li><li style="list-style-type:disc;">CI/CD, background jobs, or AWS experience</li><li style="list-style-type:disc;">Experience building AI-powered product features in production</li><li style="list-style-type:disc;">Familiarity with embeddings, vector search, RAG, evals, or LLM observability</li><li style="list-style-type:disc;">Experience with text-processing, localization, translation, or multilingual products</li></ul><hr><h3 style="line-height:1.38;margin-top:19px;margin-bottom:5px;">Why Join <a href="https://onthegosystems.com/" style="text-decoration:none;" rel="nofollow ugc noopener noreferrer" target="_blank">OTGS</a>?</h3><ul><li style="list-style-type:disc;">Stable &amp; self-funded: Founded in 2007, profitable, and independent.</li><li style="list-style-type:disc;">Industry leaders: Creators of <a href="https://wpml.org/" style="text-decoration:none;" rel="nofollow ugc noopener noreferrer" target="_blank">WPML</a>, the #1 multilingual plugin for WordPress, used on 1.5M+ sites</li><li style="list-style-type:disc;">Fully remote, async-friendly: Work from anywhere within EMEA hours</li><li style="list-style-type:disc;">Engineering-driven culture: Ownership, autonomy, testing, and thoughtful problem-solving</li><li style="list-style-type:disc;">Fair compensation and great benefits: Designed to support your well-being both inside and outside of work.</li></ul><p style="line-height:1.38;margin-top:16px;margin-bottom:16px;">Want to make a lasting impact on a product used by thousands of real customers? We would love to hear from you.</p><p>Originally posted on <a href="https://himalayas.app">Himalayas</a></p>