AI Engineer - competitive salary - Madrid, Spain A fast-growing technology consultancy is building its AI capability in Madrid and is seeking an AI Engineer to join the team. The organisation partners with clients across financial services and investment, developing robust, real-world AI systems that support complex, high-stakes analytical and commercial decision-making. This is an opportunity to join the business at an early stage, offering hands-on responsibility for developing and deploying AI solutions, close collaboration with end users, and meaningful influence over both technical direction and ways of working from day one. As an AI Engineer, you will play a foundational role in shaping both the technical architecture and working culture of a newly formed team. You will be hands-on from the outset, contributing to the design, development, and deployment of AI systems built for production use rather than experimentation in isolation. Translate commercial and operational requirements into scalable AI applications Collaborate closely with business stakeholders, engineers, and product teams to deliver meaningful outcomes Understanding of LLM inference and performance concepts such as KV caching, speculative decoding, and parallelisation Excellent programming capability in Python, plus experience with at least one of C++, Java, or .NET Experience working with SQL-based databases and cloud infrastructure (AWS or Azure)Strong academic background, including excellent academic performance prior to university and a bachelor’s degree in a quantitative discipline (e.G. Work on AI projects with clear real-world relevance and measurable impact