Founding AI Engineer | AI Start-up | London (On-Site) | High Equity (1–2%) A well-funded, seed-stage AI start-up, founded by ex-top-tier consultants, is hiring its first founding AI engineer to help build a new kind of AI-native knowledge platform. Already live with its first product and early revenue projected (high six-figure ARR this year), the company is now developing a second, more ambitious system that uses LLMs, RAG, and multi-source data ingestion to solve real problems in a complex, high-value industry. This is a rare opportunity to join early, build real AI systems, and take ownership of core architecture and product direction. What You’ll Do Build and own core AI/ML systems (Python, MLops/LLMops pipelines, integrations, data retrieval) Architect and scale a product that works across messy enterprise data (SharePoint, Slack, Outlook, etc.) Define infrastructure and engineering best practices from the ground up What We’re Looking For 3–6 years AI software engineering and deployment experience Strong exposure to MLops / LLMops, ideally in real-world AI product builds Experience with unstructured data, search/re-ranking, or retrieval systems (e.g., RAG) A “builder” mindset, fast, hands-on, pragmatic, collaborative Excited by early-stage start-up life