Backend Typescript Developer

Founding Engineer | Seed-stage AI SaaS (£100k + equity) We’re hiring for a seed-stage SaaS startup backed by Balderton (near £5m raised) that’s using AI to fundamentally redefine its product. The company is pre-PMF and mid-pivot , at a genuine inflection point, and looking for a hands-on engineer (~80% coding) to help shape the product, architecture, and technical foundations from the ground up. Compensation Full-stack engineering (backend-leaning): Next.js (FE + BE), Node.js, TypeScript , with some legacy Python Building alongside a small, senior team (3 engineers) with true peer ownership Shipping real-world AI / agentic systems, not proof of concepts Hybrid: 2+ days per week in Moorgate If you love building SaaS products with AI and want founding-level ownership, we should talk Founding Engineer | Seed-stage AI SaaS (£100k + equity)