Remote AI Engineer — Ruby on Rails & LLMs

OnTheGoSystems Ltd.; United Kingdom; Remote; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Fully remote

Async-friendly work culture

EMEA-friendly hours

Job summary

OnTheGoSystems Ltd. is seeking an AI Engineer with practical AI/LLM experience to build production features in Ruby on Rails. You will work on AI-powered product features, integrate LLM APIs, and ensure robust, tested, maintainable software.

The role emphasizes strong backend skills, API design, performance, and security, with a focus on AI-driven workflows and multilingual products. This is a fully remote opportunity within the EMEA region.

Qualifications

• Practical experience building with AI/LLM technologies, not just using AI tools casually.
• Strong Ruby on Rails experience, ideally at a senior level.
• 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, AWS experience.
• Experience with text-processing, localization, translation, or multilingual products.

Responsibilities

• 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

Skills

AI/LLM integration

Ruby on Rails

Backend development

API design

Performance optimization

Security

CI/CD

AWS

Localization

Multilingual products

Tools

Rails framework

Job description

OnTheGoSystems Ltd. is seeking an AI Engineer with practical AI/LLM experience to build production features in Ruby on Rails. You will work on AI-powered product features, integrate LLM APIs, and ensure robust, tested, maintainable software.

The role emphasizes strong backend skills, API design, performance, and security, with a focus on AI-driven workflows and multilingual products. This is a fully remote opportunity within the EMEA region.