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 integral 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 retrieval systems
About Kharon
K
📌 Data Scientist, Retrieval (Madrid)
🏢 Kharon
📍 Madrid