Fullstack AI Engineer – Barcelona / Full Remote

The Challenge 🚀 We aren't just looking for someone to "prompt" an API. We need a builder. You will be the bridge between complex AI models and sleek, user-centric applications. You'll have the autonomy to choose the best tools for the job and the support of a global community of experts.

**Who You Are **✨ A Problem Solver: You don't just see bugs; you see puzzles. Fullstack Savvy: You’re equally comfortable tweaking a CSS flexbox as you are optimizing a model's inference speed. Continuous Learner: The AI world moves fast; you move faster. Team Player: You believe that "Great" is a team sport.

**Your Mission **🎯 Architect & Build: Develop end-to-end AI applications from scratch—from data layers to the final UI. LLM Magic: Fine-tune models and build advanced RAG pipelines using LangChain or LlamaIndex. Scalable Code: Write clean, performant code in Python and TypeScript that can handle real-world traffic. Deploy & Fly: Take ownership of the deployment cycle using Docker and modern CI/CD practices. Collaborate: Share your "secret sauce" with our internal tech communities (The Comets!).

**Your Tech Toolkit **🛠️ Languages: Python (FastAPI/Flask) & TypeScript (React/Next.js). AI/ML: Hugging Face, OpenAI, LangChain, and Vector Databases (Chroma, Pinecone). Data: SQL/NoSQL and building efficient data pipelines. DevOps: Docker, Kubernetes, and Cloud providers (AWS/Azure/GCP).

Total Flexibility: Full Remote (within Spain) or Barcelona📍🌍

💙 ¿Por qué unirte a Extia? En Extia creemos firmemente en nuestro lema: “Who first, then what.” Primero la persona, después el proyecto.

✨ Flexibilidad real – Modelo adaptado a tu proyecto y equilibrio vida personal/profesional 📚 Plan de formación personalizado – Diseñamos contigo tu roadmap de evolución 🤝 Triple Seguimiento – Un Coach, un Manager y un HR siempre a tu lado. 🎁 Paquete de beneficios competitivo – Seguro Médico (incl. Fisioterapia y Psicología) + Ticket Restaurante + Transporte 🌍 Entorno internacional – Más de 3.000 colaboradores en Europa y Canada 🏆 Great Place to Work – Cultura basada en cercanía, transparencia y acompañamiento real 🎉 Eventos, afterworks y comunidad activa – Team buildings, acciones solidarias, meetups, celebraciones internas… ¡Nos gusta compartir más allá del trabajo!

📩 ¿Te interesa o conoces a alguien que encaje?