Lead Data Scientist

In this role you will lead the AI agenda for a growing UK professional services group, owning the direction and hands-on delivery from day one. You will identify where LLMs can improve workflows, design experiments, and push the strongest results into production with robust monitoring. You’ll build a board-facing framework to measure AI impact and collaborate with engineering and a new data team alongside senior stakeholders. This is a ground‑up, first-hire opportunity to shape AI at scale.

• Private healthcare
• standard benefits
• hybrid work
• first-hire role with a budgeted route to building a team

• Identify where LLMs can add measurable value within mapped workflows
• Design and run experiments to test AI solutions
• Scale successful results into production with evaluation and monitoring
• Create a framework to measure AI impact for board review
• Collaborate with engineering, data team, and senior stakeholders to align AI work

• Around 5–7 years in data science at Senior or Lead level or performing the role
• Hands-on experience applying LLMs to unstructured data, including RAG and prompt design
• Experience with LLM evaluation and monitoring; Langfuse, LangSmith or similar a big plus
• Track record of getting work into production and keeping it there

• Cross-functional collaboration
• Stakeholder influence and communication with senior leadership
• Hands-on, proactive mindset
• LLMs on unstructured data
• RAG and prompt design
• LLM evaluation and monitoring