Full job description

Senior Product EngineerLondon (Hybrid, 3 days)Join a well-funded AI startup building a behavioural intelligence platform for financial services. As an early engineering hire, you’ll play a key role in shaping the product, architecture, and engineering culture while working closely with founders and senior leadership.The CompanyThey are developing an AI-powered platform that helps organisations better understand customer behaviour and decision-making. With strong early customer traction and enterprise PoCs underway, they are now scaling their product and engineering capability.The Role*Build and scale LLM-enabled product features from concept to production
*Design APIs, backend systems, and AI-powered workflows
*Improve model quality through evaluation, monitoring, and guardrails
*Optimise token usage, performance, and cost efficiency
*Collaborate on product strategy, roadmap, and architecture
*Help establish engineering best practices as the team grows
Your Skills & Experience*Strong product engineering background
*Experience building and launching an LLM-powered product
*Backend expertise, ideally with Node.js and TypeScript
*Experience with APIs, cloud infrastructure, and scalable systems
*Comfortable operating with autonomy in an early-stage environment
*Strong communication and stakeholder management skills
What They Offer*£115,000 to £140,000 base salary
*Meaningful equity package
*Hybrid working in London
*Significant ownership and autonomy
*Opportunity to shape a product and engineering function from an early stage