Founding Engineer

Clera · Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Guernsey, Holy See (Vatican City State), Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Kosovo, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Svalbard and Jan Mayen, Sweden, Switzerland, Ukraine, United Kingdom, Åland Islands · €80k – €140k · posted today ago

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About this role

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.