About the Role Join the AI product team as a founding engineer, owning an agent-based product from concept through production. You will shape product and technical decisions while building user-facing features and the backend systems that power the platform. What You'll Do • Design and build user-facing features for an AI agent product, balancing usability with technical feasibility. • Develop and maintain backend systems, APIs, and infrastructure for production AI workloads. • Gather feedback, test product ideas, and ship improvements in rapid cycles. • Own systems end-to-end, from architecture and implementation to deployment and monitoring. • Collaborate with the founding team on product direction and technical strategy. What We're Looking For • At least 5 years of professional software engineering experience and a record of shipping products. • Full-stack product engineering skills across frontend, backend, and production infrastructure. • Hands-on experience building and deploying AI-powered products, LLM applications, or agent workflows. • Experience owning systems from zero to one, ideally in a startup, founding-engineer, solo-builder, or early-stage environment. • Comfort working through ambiguity and making decisions with incomplete information. Location This is a full-time, on-site role in San Francisco, California. Candidates should be able to work on-site in the Bay Area or relocate.