Senior Ruby on Rails Engineer

OnTheGoSystems
Full-time Spain, Spain Computer Occupations
Posted:
May 28, 2026
Location:
Spain, Spain, Spain

Job Description

Senior Ruby on Rails Engineer  We are looking for a Senior Ruby on Rails Engineer to help us build reliable, scalable products and apply AI/LLM technologies where they create real value.


This is a hands-on engineering role for someone who can own complex features end to end, make strong technical decisions, and work across backend architecture, production systems, testing, and AI-assisted product development.


You should be excited about AI, but pragmatic enough to know when a simple, deterministic solution is better than an LLM call.


What you’ll be working on: Owning features from technical design to production Building and maintaining Ruby on Rails systems used at scale Designing AI/LLM-assisted features and workflows where they improve product quality or user experience Working with LLM APIs, prompts, retrieval/context strategies, and AI-assisted development tools Making trade-offs around performance, reliability, cost, latency, security, a...

Apply for this Job

Submit your application for the Senior Ruby on Rails Engineer position at OnTheGoSystems.

Apply Now Save for Later

Job Overview

Job Type: Full-time
Location: Spain, Spain
Posted: May 28, 2026
Deadline: July 07, 2026