Santander AI Lab (CDAIO) in Madrid, Spain, is seeking a Frontier Agentic AI Engineer to design, build and deploy production-grade agentic AI systems across multi-country infrastructure. You will fine-tune language models for banking use cases, architect MCP servers and REST APIs, and collaborate with researchers to translate complex tech into bank value. A strong emphasis on memory, planning and robust failure recovery is required. #J-18808-Ljbffr