Fullstack Engineer

About the Role Join an early-stage AI company as a founding engineer, building systems that help explain how AI agents crawl, retrieve, and cite information on the web. Your work will support experiments and production tools for improving how companies are represented in AI-generated answers. What You'll Do Design and run experiments to understand how AI agents discover, retrieve, and cite web content. Build and ship production systems using modern full-stack technologies. Develop and debug telemetry and routing pipelines. Apply infrastructure, evaluation, or edge systems expertise to products for AI agents. What We're Looking For At least one year of experience as a fullstack engineer building production systems. Production experience with Next.js, TypeScript, or Go. Experience with LLM infrastructure or evaluation, or experience building edge systems. Experience building or debugging telemetry and routing pipelines. Curiosity about how AI systems choose what information to retrieve, cite, and trust, and comfort working in an experimental environment. Compensation & Benefits Base salary: $100,000 to $150,000 USD annually, plus 0.10% to 0.30% equity. Visa sponsorship is not available. Candidates must already have US work authorization. Location On-site in San Francisco, California, United States.