Senior AI Engineer - Knowledge Graphs

Responsibilities

• Design and build generative AI applications for complex financial and legal workflows
• Drive end-to-end model development lifecycle and establish best practices for reproducible research
• Design and maintain knowledge graph systems representing entities, relationships, and evolving events
• Lead entity resolution, record linkage, and canonical data modeling across fragmented datasets
• Extract structured entities and relationships from unstructured sources like filings, legal documents, and news
• Build graph-native retrieval and exploration capabilities for ownership structures and transaction histories
• Develop systems for similarity, peer, and precedent discovery using graph structure and content signals
• Apply graph machine learning techniques including embeddings, link prediction, and community detection
• Mentor teammates and champion AI adoption across the organization

Requirements

• Expertise in knowledge graph design and ontology modeling for complex domains
• Strong experience with entity resolution, record linkage, and alias handling
• Proven ability to extract structured data from unstructured financial and legal documents
• Experience building graph search, retrieval, and low-latency serving systems at production scale
• Familiarity with graph embeddings, node similarity, clustering, and link prediction
• Strong proficiency in Python for production-ready delivery
• Experience with full model lifecycle: experimentation, training, testing, monitoring, and deployment
• Good knowledge of AWS AI infrastructure
• Strong product focus and desire to understand end-to-end user impact

Benefits

• Competitive salary benchmarked at the top end of the market
• Equity and pension with up to 7% employer matching
• Private medical insurance, income protection, and group life assurance
• 25 holiday days plus local public holidays
• Hybrid working model and ability to work abroad up to 3 months per year
• 1 month paid sabbatical after 5 years
• Professional learning and development budget
• AI experimentation budget of £800 per employee

About the Company

9fin is the AI platform powering global debt markets. It centralizes proprietary credit data, deep analysis, and high-value workflows to replace fragmented infrastructure across the world’s largest asset class. The platform serves 300+ blue-chip institutions including global banks, asset managers, private equity firms, law firms, and advisors.