Founding AI Engineer (LLM System, Agent & Decision Intelligence)

Founding AI Engineer (LLM Systems, Agents & Decision Intelligence)£100,000-140,000 Depending on Experience + EquityLondonMBN Solutions are partnering with a start up AI platform that specialises in Synthetic Human behaviour.We are hiring a Founding AI Engineer to help build AI systems that let companies test decisions before they happen.We're building a decision platform that helps businesses understand how customers, markets, and competitors may respond before a pricing change, product launch, or growth initiative goes live.Today, many critical business decisions are still tested directly in the real world. We believe there should be a safer environment to explore those decisions first.As a Founding AI Engineer, you'll work on the intelligence layer behind that vision:• Build production-grade LLM and agentic workflows• Design evaluation, tracing, replay, and quality-control systems• Turn messy business data into reliable reasoning contexts• Improve AI reliability through structured outputs, retrieval, calibration, and testing• Develop systems that expose assumptions, uncertainty, and evidence• Help define what trustworthy AI predictions look likeWe're looking for someone with:✓ 5+ years of engineering experience✓ Strong Python and production systems expertise✓ Hands-on experience with LLMs, agents, RAG, or AI workflow systems✓ Experience building evaluation frameworks, tests, or quality gates for AI systems✓ Strong product instincts and comfort working in ambiguityThis isn't a prompt-engineering role, and it isn't pure research. You'll be building real systems that help customers make better decisions and continuously improve by learning from real-world outcomes.If you're excited by AI systems that are auditable, measurable, and tested against reality, we'd love to hear from you.#Hiring #AIEngineer #MachineLearning #LLM #AgenticAI #FoundingEngineer #ArtificialIntelligence #StartupJobs #Python #RAG