Artificial Intelligence Engineer

Product / AI Engineer – London (Hybrid)📍 Location: Holborn, London – Minimum 1 day per week onsite💰 Salary: Up to £90,000 DOE💻 Tech: AI Agents, LLMs, Claude Code, Codex, Full Stack Development🚀 Company: Growing London-based AI Start-up📄 Type: Permanent, Full TimeKEY POINTSJoin a growing AI start-up as one of its first engineersBuild and improve AI agents already being used by real customersWork with LLMs, agent architectures and evaluationsUse AI coding tools such as Claude Code and Codex dailyTake ownership of features and influence product decisionsWork directly with the founders in a small engineering teamTHE COMPANYWe're working with an exciting London-based AI start-up whose product runs through WhatsApp and is already attracting a growing number of users.They're looking for a Product / AI Engineer to help develop new AI capabilities, improve existing agents and scale the product.You'll have plenty of ownership, work closely with the founders and have a genuine say in what gets built.THE ROLEDesign, build and improve AI agents running in productionDevelop new features and improve agent behavioursWork with LLMs, agent evaluations and multi-agent systemsOwn features from initial idea through to productionContribute to technical and product decisionsHelp improve product performance and scalabilityESSENTIAL EXPERIENCEHands-on AI agent development, ideally with real users in productionUnderstanding of agent design, testing and evaluationsExperience with LLM-powered applicationsRegular use of Claude Code, Codex, Cursor or GitHub CopilotStrong Software Engineering fundamentalsA product-focused mindset and ability to work independentlyAble to commute to Holborn at least once per weekNICE TO HAVEEarly-stage start-up or AI-native company experienceConversational AI or multi-agent systems experienceFull Stack Development backgroundWHY JOIN?You'll be joining a small team at an exciting stage, working on a live AI product with real ownership and the chance to shape its future.Benefits include:Salary up to £90,000 DOEHybrid working – minimum 1 day per week onsitePrivate medical coverRegular company offsites and hackathonsDirect access to the foundersTO APPLYIf you're already building with AI agents, enjoy using tools like Claude Code or Codex and want to join a start-up where you can make a real impact, I'd love to hear from you!📩 If you'd like to find out more, feel free to get in touch or apply via the link below.#AIEngineer #ProductEngineer #AIAgents #ArtificialIntelligence #LLM #SoftwareEngineering #ClaudeCode #LondonTech #TechJobs #Hiring #StartupJobs