About this role
AI Engineer - API & Integrations Team at Factorial. Location: Madrid or Barcelona. Role: building systems, designing skills, evaluating outputs Requirements: Experience building AI-powered production systems, Spec Driven Development, RAG, human-in-the-loop workflows, evaluation frameworks, APIs and system design; product-oriented and customer-centric mindset. Category: Engineering Seniority: Mid Level Tools: LLMs, Retrieval-Augmented Generation (RAG), MCP, APIs Commitment: Full Time Workplace: Hybrid Languages: English