Founding AI Agent Engineer

ABOUT THE ROLE Join an early-stage healthtech company building conversational AI to support patient recruitment for clinical trials. As a founding engineer on the agent team, you will own production AI systems that communicate with patients across multiple channels in a regulated setting. WHAT YOU'LL DO - Build and orchestrate AI agents that coordinate recruitment across multiple clinical trials. - Review production conversation traces, identify failure scenarios, develop evaluations, and improve the agent harness. - Integrate health profile data sources to help agents reach patients at relevant times and support trial recruitment. - Scale language model experiences across voice, SMS, and email while maintaining consistent, personalized conversations. - Evaluate emerging agent research and tooling and incorporate useful advances into the software platform. WHAT WE'RE LOOKING FOR - Zero to four years of experience as a software engineer, agent engineer, or applied AI engineer. - Experience focused on building agents and large-scale AI applications, including conversational agents or agent harnesses used in production. - Experience developing evaluation and tracing infrastructure for AI agents, beyond personal projects or prototypes. - Working knowledge of conversational AI, LLMs, agent orchestration, LangGraph or the Vercel AI SDK, voice AI, and SMS integrations. - Strong software and computer science fundamentals, supported by an undergraduate degree in computer science, mathematics, or a related field. - Resourcefulness, strong work ethic, and ability to independently unblock challenging engineering work. - Healthtech experience or interest is valuable, as is experience building consumer-facing AI products. - Must be authorized to work in the United States without visa sponsorship, and able to work on-site in the San Francisco Bay Area. COMPENSATION & BENEFITS Base salary: $150,000 to $220,000 annually. Visa sponsorship is not available. LOCATION On-site in the San Francisco Bay Area, California, United States.