Messy spend management is tricky business. And tedious processes are a lose-lose situation for all involved, not just finance. We build spend solutions that make managing money seamless, empowering, and surprisingly effective for finance teams and employees alike - with a vision to help all businesses 'go beyond'.
With great ambitions driving us forward, we can't say we've got this whole thing figured out. This is an exciting opportunity to help shape how Pleo builds AI-powered product features, working alongside software engineers, data engineers and data scientists to take ideas from prototype to production. Pleo has over 40,000 customers and a decade of unique spend data — an incredible foundation to build on. Your mission will be to harness this data to create real product value.
You'll be reporting to the Senior Manager for Data & AI Products and will be one of the first hires in the team but, rest assured, you will not be working solo You will work very closely with other Engineers and Data Scientists,



each bringing distinctive skills while you bring applied AI engineering and data context. Together, the team covers the full chain from data to shipped product.
Your core focus is on building and shipping AI-powered features, with a strong collaborative element across Product Engineering, AI Platform, and Data & ML Platform teams.
Design and build end-to-end RAG systems for specific product use cases: chunking strategies, embedding model selection, retrieval optimisation, and quality evaluation.
Own the full AI-product lifecycle: prompt design, context and state management, agentic loops, output parsing, edge case handling, and safe production deployment.
Build evaluation datasets and automated eval pipelines that give the team confidence in AI feature quality before and after changes.
Instrument AI features for production observability: logging, drift detection, quality monitoring, and alerting.
Support other engineers through reviews, pairing, and pragmatic te

📌 Senior Applied Ai Engineer (La Mancha)
🏢 Pleo
📍 La Mancha