AI Solution Engineer - Full-stack / Rails Engineer (Barcelona)

Job description

About Yuma AI: Yuma is building a next-generation orchestration platform that deploys autonomous AI agents dedicated to customer support in e-commerce . We already support 150+ paying merchants and help them automate up to 80% of their customer tickets freeing human agents for higher-value conversations. Founded by Guillaume Luccisano (3rd-time YC founder) at the end of 2022, Yuma is one of the leaders in the AI Support Automation space with 10+ consecutive months of double-digit growth. We are now a team of 30 passionate and ambitious people based between Paris, Barcelona and Boston and have grown revenue 5x in 2025. We aim to repeat this trajectory in 2026. The scale-up phase is fully underway. 🚀 Role Overview: We remain a small team of 5 engineers, but we are intense and we move very quickly! Fast iteration is key. In the past 2 years since Yuma’s founding, we’ve built a lot, but there is still much more to do! We operate at startup speed and handle everything: product iterations, A/B testing, LLM research, AI Agents pipeline, new feature development, performance optimizations, and more. We are intensely focused on delivering value to our users and on product excellence. That is...