Founding Engineer (AI Agents)_TT

The company is building infrastructure for AI-native service companies: an operating system where AI agents run service-business operations end to end. It is led by a serial founder whose previous company exited and who recently moved to San Francisco to build this one. The company has just closed a strong angel round from well-known European and US angels. It is extremely early, and the first engineers will set the product direction, technical architecture and engineering culture. The team works fast, in person and with a high bar, and uses agentic tooling as part of everyday work. Relocation to SF is supported, including O-1 visa sponsorship for strong international candidates. Equity runs from 1 to 3%, and co-founder-level equity is possible for exceptional people., * Build the core product from scratch as one of the first engineers, from architecture through shipped features

• Design, build and scale the AI agents and LLM systems that run service-business operations end to end
• Build and own evals that measure and improve how well and how reliably the agents work
• Own full-stack work across frontend, backend and infrastructure, and make core technical decisions with little oversight
• Turn unclear problems into working software quickly, and work with the founder on product direction
• Build internal agentic tooling that makes the team faster
• Help shape the engineering culture, hiring bar and practices as the team grows

• 2 years of real full-time, hands-on engineering experience
• Zero-to-one experience: founder, technical co-founder or CTO of a real startup, or a founding or very early engineer (roughly the first 20 people) at a high-growth startup
• A track record of personally building production-grade systems, not only research or prototypes
• Strong skills in TypeScript and/or Python, with experience in full-stack development and distributed systems
• Hands-on experience with LLMs and AI agents, including evals
• Daily use of agentic tooling, ideally including harnesses or tools you’ve built for yourself, plus side projects
• At least one standout signal: early at a strong AI-native or YC startup, a top internship (quant firm, AI lab or top tech), olympiad results, a hard side project, or a strong school
• Based in San Francisco or willing to relocate, and genuinely up for six days a week in person
• US work authorisation, or a profile that could support an O-1 visa (awards, publications, press or a founder track record)
• A stable track record without a pattern of short stints, and a preference for full-time employment over freelance or contract work