Founding Engineer (Europe)

About the Role

Join an early-stage AI infrastructure startup as its first engineering hire. You will work directly with the founder to evolve a working AI-powered service business product into reliable infrastructure that can scale to a large user base.

What You'll Do

• Design and build scalable architecture, data models, and infrastructure for the product.
• Develop the agent runtime, including orchestration, memory, verification, and multi-agent workflows.
• Work across backend, infrastructure, frontend, and AI agents to deliver what the product needs.
• Set technical direction and establish engineering practices as the team grows.
• Ship improvements regularly to businesses using the product in recruiting and web agency services.

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 operating LLM or AI agent systems used by real customers.
• Strong full-stack range, with the ability to take work from backend and infrastructure through to the user interface.
• Experience scaling a working prototype into production infrastructure, and making technical decisions independently in an early-stage team.
• A track record of shipping frequently and explaining the difficult technical decisions behind your work.
• Founder experience or experience building agent orchestration, memory, evaluations, verification, or multi-agent workflows is valuable.
• Based in Europe and willing to relocate to San Francisco within the first year.