Senior Data Scientist – Generative AI

Senior Data Scientist – Gen AI

Fintech – 2 days a week London – Up to £110K+ Bonus

The Role

We’re partnering with a leading UK fintech to find a Senior Data Scientist with hands‑on GenAI experience. This role focuses on building production‑grade agentic systems that impact the business.

Responsibilities include:

• Designing and implementing core logic for GenAI agents, including tool definitions that allow LLMs to interact with internal systems
• Building systematic evaluation frameworks to measure accuracy, reliability, and tool‑use performance
• Developing predictive ML models and analysing business data for opportunities
• Rapidly prototyping applications to validate technical feasibility with stakeholders
• Optimising prompts, reasoning chains, and agentic patterns for production use
• Implementing responsible AI guardrails and adversarial testing

Requirements

• Hands‑on experience building LLM‑powered applications – tool use, RAG, agentic frameworks
• Strong, production‑quality Python (clean, tested, Git‑based workflow)
• Experience evaluating non‑deterministic and ML models systematically
• Solid SQL and data manipulation skills
• Ability to translate non‑technical business problems into effective technical solutions

Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

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