Senior AI/LLM Engineer (Ruby on Rails)

Senior AI/LLM Engineer - Ruby on Rails

Conditions

Posted Date Jun 04, 2026 Employment Type Full-time Experience Level Mid-Senior level Location Romania Category ** Programming ** Company **OnTheGoSystems **

Senior AI/LLM 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

Interested in remote work opportunities in Development & Programming? Discover Development & Programming Remote Jobs featuring exclusive positions from top companies that offer flexible work arrangements. 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 Browse our curated collection of remote jobs across all categories and industries, featuring positions from top companies worldwide.
• 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.

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