Senior Ruby on Rails Engineer

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OnTheGoSystems

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2007

☁️ SaaS

🤖 Artificial Intelligence

🤝 B2B

SaaS • Artificial Intelligence • B2B

OnTheGoSystems is a fully-remote software company that builds multilingual and AI-powered translation tools for WordPress and the wider web. Their flagship WPML plugin powers over 1. 5 million WordPress sites and a Private Translation Cloud (PTC) applies machine learning and AI to provide cloud-based and standalone translation services. The company focuses on developer and business customers, delivering SaaS-style products and integrations to help organizations go global.

📋 Description

• Owning features from technical design to production • Building and maintaining Ruby on Rails systems used at scale • Designing AI/LLM-assisted features and workflows where they improve product quality or user experience • Working with LLM APIs, prompts, retrieval/context strategies, and AI-assisted development tools • Making trade-offs around performance, reliability, cost, latency, security, and maintainability • Writing and maintaining automated tests, including unit, integration, and E2E tests • Debugging production issues and improving system reliability

🎯 Requirements

• Strong professional experience with Ruby on Rails, ideally at senior level • Experience building and running production systems used by real customers • Strong backend skills, including databases, API design, performance, background jobs, and security • Ability to break down ambiguous problems and propose practical technical solutions • Hands-on interest or experience with AI/LLM technologies • Good judgment about when to use AI and when simpler engineering approaches are better • Strong testing habits and care for long-term code quality • A responsible, curious, flexible mindset: willing to debug, deploy, investigate, learn, and own outcomes • Nice to have: Experience with React CI/CD, background jobs, or AWS experience • Experience building AI-powered product features in production • Familiarity with embeddings, vector search, RAG, evals, or LLM observability • Experience with text-processing, localization, translation, or multilingual products.

🏖️ Benefits

• 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.