Department: Engineering
Location: Madrid
Compensation: €85,000 - €95,000 / year
Description
Location: Madrid, Spain
Annual Remuneration: €85,000 - €95,000 and discretionary annual bonus
Pay Frequency: Monthly
Probationary Period: 180 days
Work Arrangement: Hybrid, 3-days per week
TL;DR Kharon is seeking a full-time Data Scientist, Retrieval & Agentic Systems based in Madrid.
Responsibilities
• Owning and evolving Corestream, Kharon's risk intelligence feed — a dynamic platform that surfaces entity-level insights and topic-based risk narratives to customers
• Redesigning and improving Kharon's semantic search capabilities, opening new avenues for content discovery — drawing on modern approaches including BM25 tuning, semantic distance, RAG, and reranking
• Integrating Kharon's risk analysis outputs into the search layer, ensuring that graph-based insights surface meaningfully within search results and sub-network exploration
• Driving the evolution of Kharon's narrative generation pipeline — how we take graph and analytical data and transform it into compelling,
accurate written intelligence for customers
• Partnering with Product and Engineering to take ownership of the Corestream roadmap and push it to its next stage
• Tweaking and optimizing the metrics that define search quality and narrative relevance
Qualifications
• A proven interest or experience in general security, financial crimes, sanctions, export controls, or related domains
• 3+ years of experience in a Data Science or AI Engineering role
• Hands-on experience with semantic search — including familiarity with BM25, vector search, reranking, and retrieval evaluation
• Experience with RAG pipelines and working with agentic systems in production
• Proficiency in Python and SQL
• Strong product alignment — able to read a roadmap, take ownership of tickets, and drive initiatives forward independently
• Bonus: Experience with graph-aware search or integrating knowledge graph outputs into retrieva
📌 Data Scientist, Retrieval (Madrid)
🏢 Kharon
📍 Madrid