AI Engineer - Ruby on Rails
OnTheGoSystemsBarcelona, Catalonia, Spain
Posted May 29, 2026
Full Time
About the Company
OTGS (founded in 2007, profitable, and independent) is a self-funded company that values engineering-driven culture and autonomy.
Job Description
We are looking for an engineer with practical AI/LLM experience who can build production features in Ruby on Rails. This role is for someone who has worked with AI tools, LLM APIs, prompts, retrieval/context patterns, or AI-assisted workflows - and who also has the engineering depth to turn those ideas into reliable, tested, maintainable software.
Requirements
- Practical experience building with AI/LLM technologies, not just using AI tools casually
- Strong Ruby on Rails experience, ideally at a senior level
- Good judgment about when AI is useful and when simpler engineering is better
- Strong backend skills, including databases, API design, performance, background jobs, and security
- Ability to break down ambiguous problems into clear technical solutions
Benefits
- Stable & self-funded
- 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