Lead Backend Engineer

Lead Backend EngineerLondon (4-5 Days Onsite per week)Up to £120,000 + EquityAI StartupAn early-stage AI startup is hiring a Lead Backend Engineer to help build the technical backbone of a platform focused on automating complex operational workflows in a large, traditional industry undergoing significant digital transformation.The employer is building agentic AI systems that automate communications, scheduling, compliance, and operational coordination - moving beyond chat-based AI into systems that take action and execute workflows in real-world environments.The product is already live with early customers and scaling rapidly.The RoleThis is a hands-on Lead Backend Engineer position with significant technical ownership.You will:Architect and build scalable Back End systems using Node.js and TypeScriptDesign APIs, microservices, and event-driven architecturesBuild Back End workflows and integrations powering AI-driven automationCollaborate closely with AI, Product, and Data teamsMentor engineers and help define engineering standardsContribute to system design and long-term technical strategyWhat the Employer Is Looking ForExcellent software engineering experienceStrong Node.js and TypeScript expertiseExperience building scalable Back End systems and APIsStrong system design and architecture capabilityStartup or scale-up experience (essential)Degree educated (STEM preferred)Strong experience with PostgreSQL and modern Back End practicesNice to have: AI/LLM integration ..... full job details .....