Founding Full Stack AI Engineer

A VC-backed AI start-up on a mission to transform how deals get done is looking for a Founding Full Stack AI Engineer to join their fast-moving team. You’ll play a pivotal role in shaping the product and technical vision from day one—building a scalable platform that blends cutting-edge AI with a slick user experience.

This is the perfect role for someone who thrives in an early-stage environment, enjoys tackling complex problems end-to-end, and wants their code to have immediate, visible impact.

🔧 What You’ll Be Doing

• Designing secure, scalable APIs in Python/FastAPI
• Building and optimising Retrieval-Augmented Generation (RAG) pipelines
• Owning vector databases (pgvector, Weaviate, FAISS) and embedding strategies
• Integrating OpenAI / Bedrock models and developing guardrails & evaluation flows
• Ingesting and structuring data for high-performance retrieval and analytics
• Building clean, fast UIs with React / Next.js
• Shaping cloud architecture (AWS, Docker, ECS) and CI/CD pipelines
• Working directly with the founders to set the product and technical roadmap

💡 What You’ll Bring

• 5+ years’ full-stack experience with Python + React/Next.js
• Proven hands-on AI engineering — RAG systems, embeddings, hybrid search
• Solid cloud & data skills (AWS, SQL/NoSQL, containerisation)
• Familiarity with LangChain / LlamaIndex and LLM evaluation tools a bonus
• Start-up mindset — proactive, hands-on, and comfortable with ambiguity

🚀 Why Join

• Founding-team impact with meaningful equity
• Build a groundbreaking AI product from the ground up
• Flexible remote-first working, with optional London meetups
• Competitive salary and a culture that values innovation and autonomy

Sound like a good fit? Hit apply and let’s chat!