Founding Engineer in United Kingdom

ABOUT THE ROLE

Join an early-stage AI infrastructure startup as its first engineer. You will work directly with the founder to evolve a functioning product into scalable infrastructure for AI-powered service businesses, with broad ownership across the product and its technical direction.

WHAT YOU'LL DO

- Develop the architecture and infrastructure needed to scale the product to a large user base.

- Build and operate the agent runtime, including orchestration, memory, verification, and supporting systems.

- Take projects end to end across backend, infrastructure, frontend, and AI agents.

- Set technical standards and guide how the engineering team builds as it grows.

- Ship improvements regularly to users operating real businesses.

WHAT WE'RE LOOKING FOR

- At least 2 years of experience shipping production software, or an equivalent record as a founder, solo builder, or exceptional early-career engineer.

- Experience building and running LLM or AI agent systems in production, with real users relying on them.

- Full-stack range, including the ability to work across backend, infrastructure, and user interfaces.

- Experience turning prototypes into dependable systems through sound architecture, data models, runtime design, and orchestration.

- Evidence of owning technical decisions and delivering quickly in an early-stage or independent environment.

- Strong generalist engineering skills and practical experience with agent workflows, memory, evaluations, or verification are valuable.

- Based in Europe and willing to relocate to San Francisco within the first year.

COMPENSATION & BENEFITS

Base salary is €80,000 to €140,000 annually. Visa sponsorship and relocation support are available for a move to San Francisco.

LOCATION

Remote within Europe, with relocation to San Francisco expected within the first year.