AI Engineer - Ruby on Rails
OnTheGoSystems
Spain
2 months ago
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Role details
Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Shift work
Job source
Tech stack
Artificial Intelligence
Amazon Web Services
Business Logic
Automation of Tests
Databases
Continuous Integration
Software Debugging
Software Maintenance
Ruby on Rails
Systems Integration
WordPress
Large Language Models
+2 more
Backend
Api Design
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.
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
Requirements
Do you have experience in WordPress?, Do you have a Master’s degree?, 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
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