https://jobs.co.uk/job/senior-product-engineer-harnham-data-analytics-recruitment--32fdb54f-466d-4253-80d8-6de4ad3945ab RSS feed for Senior Product Engineer at Harnham - Data & Analytics Recruitment. en-gb Fri, 02 Oct 2026 00:30:34 GMT https://jobs.co.uk/job/senior-product-engineer-harnham-data-analytics-recruitment--32fdb54f-466d-4253-80d8-6de4ad3945ab https://jobs.co.uk/job/senior-product-engineer-harnham-data-analytics-recruitment--32fdb54f-466d-4253-80d8-6de4ad3945ab Thu, 01 Oct 2026 11:52:58 GMT Location: London | Salary: 140000.00-140000.00 Annual | Type: Permanent | Senior Product EngineerLondon (Hybrid) Up to £140,000 + EquityLooking to make a genuine impact at an early-stage AI startup? This is an opportunity to join a well-funded business as one of its first engineering hires, taking ownership of a product already being tested by major enterprise customers.The CompanyThis AI startup is building a behavioural intelligence platform that helps financial services organisations better understand customer behaviour and decision-making. Backed by significant early-stage investment, they are working with large enterprise clients and moving from proof-of-concept projects towards commercial deployment. With a small, highly capable team, they are focused on building scalable AI products with real-world impact.The RoleYou will take ownership of product development, helping to build and scale an AI-powered platform from an early stage.Responsibilities include: Building LLM-enabled products and features used by enterprise customers Designing and developing backend services, APIs, and platform capabilities Owning RAG workflows and AI application architecture Managing evaluation frameworks, testing, monitoring, and quality standards Optimising LLM perform... Permanent