https://jobs.co.uk/job/senior-ai-software-engineer-harnham-data-analytics-recruitment--9140adf3-7491-437b-ab37-44557955848e RSS feed for Senior AI Software Engineer at Harnham - Data & Analytics Recruitment. en-gb Thu, 08 Oct 2026 15:19:54 GMT https://jobs.co.uk/job/senior-ai-software-engineer-harnham-data-analytics-recruitment--9140adf3-7491-437b-ab37-44557955848e https://jobs.co.uk/job/senior-ai-software-engineer-harnham-data-analytics-recruitment--9140adf3-7491-437b-ab37-44557955848e Thu, 08 Oct 2026 11:56:54 GMT Location: London | Salary: 140000.00-140000.00 Annual | Type: Permanent | Senior AI Software Engineer London (Hybrid, 3 days per week) Up to £140,000 + Equity We''re partnered with a fast-growing AI start-up building cutting-edge behavioural intelligence technology for the financial services sector. Backed by an exceptional leadership team and industry experts, they''re developing a platform that helps organisations better understand client behaviour through advanced AI and large language models. As their first senior individual contributor engineering hire, you''ll play a critical role in shaping both the product and engineering culture from the ground up. The Opportunity This is a true 0-to-1 product engineering role. You''ll work closely with senior leadership to build and scale a greenfield product, taking ownership across the full stack while driving the architecture and evolution of production-grade AI systems. You''ll have significant influence over technical direction, engineering standards, product decisions and future hiring as the team grows. What You''ll Be Doing Building and shipping customer-facing product features end-to-end Developing and scaling production LLM applications Owning RAG pipelines and AI application architecture Impleme... Permanent