London (In-Office) £110k - £150k + Founding Equity Most AI companies are currently building "chatbots." This team is building an autonomous orchestration layer for a high-stakes, physical industry. They aren''t just processing text; they are managing bidirectional, real-time data streams where latency and reliability are the only metrics that matter. With £35M in funding to date, they are past the experimental phase and are now building the "production engine." They are looking for a Founding Engineer to join an elite pod of four, all of whom have previously been CTOs or lead engineers at top-tier scale-ups and labs. We need a builder who is obsessed with reliability and integration. You ll be responsible for making sure the AI doesn''t just "talk," but actually executes tasks across a complex ecosystem: Strong Python or TypeScript/Node.js for building robust, scalable backend services and API integrations. A track record of gluing complex systems together, handling the authentication, rate-limiting, and data-mapping required to connect AI to legacy CRMs and ERPs. Experience with frameworks like LangChain, LangGraph, or building custom state-machines to manage long-running, multi-step AI tasks. A Full-Stack mindset. You care as much about the reliability of the webhook as you do about the temperature of the LLM. Experience with PostgreSQL, Redis, and modern cloud infrastructure (AWS/GCP/Vercel) to ensure the system never drops a lead. Desirable Background and Expe