Madrid | Hybrid: 3 days in the office / 2 remote | €65 K max + 10% bonus About the Opportunity We are supporting a leading international e-commerce technology company that is investing heavily in AI to transform the way software is designed, developed, tested, and delivered. We are looking for a Senior AI Engineer to join an international engineering team and help bring AI capabilities directly into the software development lifecycle. You'll work on practical, production-focused solutions that improve developer productivity, engineering quality, and automation across the organisation. This is a great opportunity for an experienced software engineer who has moved into AI and wants to work on real-world Gen AI applications rather than purely experimental projects . What You'll Be Doing
Design and build AI-powered SDLC solutions, including code generation, automated code reviews, intelligent testing, and documentation. Develop MCP-based tools and extensions that give AI systems access to relevant engineering context and tools.



Apply context engineering techniques to improve the accuracy, reliability, and relevance of LLM-powered workflows. Build LLM-integrated workflows across CI/CD pipelines. Work with LLM orchestration, prompt engineering, structured outputs, and tool calling.
Develop and integrate RAG-based solutions using embeddings and vector databases. Implement evaluation, observability, monitoring, and guardrails for AI systems. Work closely with engineering and product teams to identify new opportunities for AI-driven automation and productivity. What We're Looking For 5+ years of software engineering experience , ideally in backend or full-stack environments.
Strong programming experience with Java, Python, Java Script, or Kotlin . Hands-on experience integrating LLMs into software engineering or product workflows . Good understanding of RAG, embeddings, vector databases, and LLM orchestration . Experience with MCP, context engineering, or agentic workflows .

📌 Senior ai engineer (Santander)
🏢 E-Frontiers
📍 Santander