Senior Applied AI Engineer

Our client is a fast-growing European fintech company in the business spend management space. We're looking for a Senior Applied AI Engineer to design, build and ship customer-facing AI features end-to-end. Responsibilities • Design, build and ship customer-facing AI features end-to-end, including RAG system design (chunking, embedding selection, retrieval, re-ranking) and agentic workflows. • Ship external customer-facing LLM-based features into production, with safe production deployment practices. • Do hands-on evaluation-pipeline and observability work: drift detection, quality monitoring. • Reason independently about retrieval architecture using strong data fluency. • Apply real engineering rigor to the Context Development Lifecycle (CDLC): generate, evaluate, distribute and observe the context that powers AI agents. • Multiply the output and quality of the squad you join, and share patterns/practice beyond your immediate team so adoption compounds across the organisation. • Embed directly into a client squad as a hands-on Individual Contributor. Requirements: • Python (Python-first). • RAG system design: chunking, embedding selection, retrieval, re-ranking. • Agentic workflows; safe production deployment. • Proven experience shipping external customer-facing LLM-based features to production (not prototypes). • Hands-on evaluation-pipeline and observability work: drift detection, quality monitoring. • Data fluency to reason about retrieval architecture independently. • Agent & harness engineering fluency — designing guardrails, context and verification layers for safe, reliable AI-assisted delivery; concrete evidence of having built/operated this kind of tooling, not just used it. • Comfortable with the client's current daily tools: Claude Code and GitHub Copilot. Nice-to-Have: • Specific tooling such as AWS Bedrock, OpenAI APIs, or Langfuse (or comparable eval platforms). We offer*: • Flexible working format - remote, office-based or flexible • A competitive salary and good compensation package • Personalized career growth • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) • Active tech communities with regular knowledge sharing • Education reimbursement • Memorable anniversary presents • Corporate events and team buildings • Other location-specific benefits *not applicable for freelancers