Senior AI Engineer
LondonFull-timePosted 11mo ago
About the role
Senior AI Engineer role at 9fin leveraging AI across products, building large-scale AI-powered systems, and applying cutting-edge techniques to financial and legal workflows.
Responsibilities
- Design and build generative AI applications tailored to complex financial and legal workflows, leveraging state-of-the-art models to deliver innovative, practical solutions that streamline decision-making and unlock new efficiencies.
- Drive end to end model development lifecycle, leading the team in best practices, ensuring reproducible research and well managed model delivery/deployment.
- Collaborate cross functionally to share diverse ideas, understand business problems, and elevate/mentor your teammates.
- Translate complex problems into well-defined scoped bets in an internal startup style environment, dynamic and fast-paced.
- Learn and apply ground-breaking research and approaches in advanced topics, iterating improvements with a fail fast mentality.
- Be a proactive sharer of compelling ideas/work to the rest of the team and organisation. Lead/push the adoption of AI throughout 9fin.
Qualifications
- Strong proficiency in Python for production ready delivery.
- Expert in one or more areas: Information Retrieval (chunking strategies, finetuning embedding models, training re-rankers), Entity/relationship extraction/resolution, Knowledge Graphs (building and inference, graphRAG), Recommendation systems and ranking (personalisation, learning-to-rank, feed ranking, user modelling), Tabular ML (feature engineering, structured data modelling e.g., GBDTs), Statistical & Predictive Modelling (supervised ML, anomaly detection, temporal modelling), Deep understanding of the GenAI landscape and agentic frameworks.
- Experience working in the full model lifecycle (experimentation, training, testing, monitoring, deployment).
- Strong product focus with a desire to understand end-to-end impact for end users.
- Good knowledge of AWS’s AI infrastructure.
Skills
Required:PythonInformation RetrievalEntity/relationship extractionKnowledge GraphsGenAI understanding
Nice to have:Recommendation systems and rankingTabular ML
Benefits
- Competitive Salary (top end of market)
- Equity
- Pension (minimum 4% with 9fin matching up to 7%)
- Private Medical Insurance
- Paid sick leave with Income Protection for long periods of illness
- Group Life Assurance
- Season Ticket Loan & Cycle to Work schemes
- 25 holiday days per year
- Local public holidays (with ability to exchange)
- Hybrid working model
- Work abroad for up to 3 months a year
- 1 month paid sabbatical after 5 years of service
- Enhanced parental leave & flexible working arrangements
- Professional learning and development budget
- AI experimentation budget of £800 (UK) per employee
- Quarterly team socials
- Summer and Winter company social events
Last updated Oct 21, 2026. Interested? Apply on the company site.
About 9fin
Faster, smarter, debt market intelligence
9fin is a leading provider of debt market intelligence and offers everything you need to analyse a credit, or win a mandate in one AI-powered platform
Debt Market IntelligenceDataAnalyticsCredit AnalysisFinancial Data
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