About the Role Join a small engineering team building AI systems for hospitality operations. You will own full-stack components that help AI agents understand guest requests, find reliable information, use tools, and resolve issues or escalate them when needed. What You'll Do • Build response-generation pipelines for intent classification, context assembly, tool selection, and escalation decisions. • Develop retrieval systems that ground responses in accurate, current customer information. • Create reliable multi-step tool workflows and handle third-party API failures. • Build evaluation frameworks using real conversations to measure quality and catch regressions. • Implement observability and tracing that help support teams understand system behavior. • Develop interfaces that let non-technical users adjust agent behavior. • Extend agent capabilities to voice, including real-time transcription and tool use. • Improve speed and cost through model routing, caching, and prompt refinement, while contributing to infrastructure, data pipelines, integrations, and APIs. What We're Looking For • At least 5 years of professional software engineering experience, including 3 or more years building production systems used by real people. • Substantive startup or founder experience shipping real products. • Experience designing and debugging production AI systems, especially retrieval pipelines, prompt engineering, and model orchestration. • Strong retrieval experience, such as knowledge bases, ranking, context validation, or semantic search, plus methods for evaluating production systems. • Experience with multi-step workflows, tool orchestration or function calling, and observability or debugging for complex pipelines. • Proficiency in a backend language such as Python, Go, Rust, or Java, and the ability to work across multiple layers of the stack. • Experience integrating third-party APIs and managing production failure modes; experience with real-time systems, voice, user-facing controls, or model cost and latency optimization is valuable. Compensation & Benefits Base salary is $130,000 to $220,000 annually, with equity of 0.20% to 1.20%. Benefits include health insurance and a 401(k) match. Visa sponsorship is not available. Location On-site in San Francisco, California.