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OnTheGoSystems Himalayas · Posted today

AI Engineer - Ruby on Rails

Portugal Full time Remote

AI Engineer Ruby On Rails Developer Backend Engineer LLM Engineer
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Indexed description

AI Engineer - Ruby on Rails

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.

What you’ll be working on:

  • Designing and building AI/LLM-assisted product features
  • Integrating LLM APIs into Ruby on Rails systems
  • Combining AI approaches with business logic, tests, fallbacks, and production safeguards
  • Owning features from technical design to production
  • Improving reliability, accuracy, consistency, latency, cost, security, and maintainability
  • Writing and maintaining automated tests, including unit, integration, and E2E tests
  • Debugging production issues and improving system behavior over time

What we’re looking for:

To succeed in this role, you’ll have:

  • 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

Nice to have

  • CI/CD, background jobs, or AWS experience
  • Experience with text-processing, localization, translation, or multilingual products

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.

Want to make a lasting impact on a product used by thousands of real customers? We would love to hear from you.

Originally posted on Himalayas

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