Founding Full Stack AI Engineer
Remote UK (occasional travel to London or Leeds)
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
Familiarity with LangChain / LlamaIndex and LLM evaluation tools a bonus
Start‑up mindset — proactive, hands‑on, and comfortable with ambiguity
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!
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Staffing and Recruiting
Salary: £75,000 – £100,000
Full Stack AI Engineer in London employer: Oakwell Hampton Group
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