Senior AI Engineer - Legal AI

The role

A Senior AI Engineer will design and build generative AI applications for complex financial and legal workflows. You will drive the end to end model development lifecycle and convert complex documents into structured data.

What you will do

• Design and build generative AI applications tailored to complex financial and legal workflows.
• Drive end to end model development lifecycle.
• Collaborate cross functionally to share ideas and mentor teammates.
• Translate complex problems into well-defined scoped bets.
• Learn and apply ground-breaking research and approaches.
• Help lead and push the adoption of AI throughout 9fin.

Required qualifications

• Deep experience working with complex legal and financial documents.
• Expertise in extracting structured data from long, complex documents.
• Strong understanding of document structure, section hierarchy, and patterns in legal and financial documentation.
• Experience applying LLMs to high-precision extraction tasks.
• Ability to design review, verification, and reconciliation workflows.
• Experience building labelled datasets, annotation frameworks, synthetic data generation, and evaluation sets.
• Strong understanding of chunking, document segmentation, retrieval, and context construction.
• Familiarity with leveraged finance, debt capital markets, credit agreements, covenant packages, bond documentation, and restructuring processes.
• Ability to build and operate extraction pipelines, evaluation systems, model-serving infrastructure, and monitoring.
• Strong proficiency in Python for production ready delivery.
• Experience working in the full model lifecycle.
• Good knowledge of AWS’s AI infrastructure.

Nice to have

• Experience with chatbots, retrieval systems, and general-purpose AI applications

Benefits

• Competitive Salary
• Equity
• Pension (minimum contributions are 4% with 9fin matching up to 7%)
• Private Medical Insurance
• Paid sick leave with Income Protection
• Group Life Assurance
• Season Ticket Loan
• Cycle to Work schemes
• 25 holiday days per year
• Local public holidays
• Work abroad for up to 3 months a year
• 1 month paid sabbatical after 5 years of service

About the company

9fin is the AI platform powering global debt markets. The business provides a single platform that centralises proprietary credit data, deep analysis, and high-value workflows for blue-chip institutions.