Remote Senior AI Agent Backend Engineer

Commerce is building a new team to deliver AI agents for B2B commerce, with a focus on reliability, safety, and user-centric conversational experiences. The Senior Backend Engineer (AI Agent) will design orchestration, sub-agent architecture, and tool integrations, owning rigorous evals and performance metrics. The role requires 5+ years in backend/API development, experience with LLMs in production, and strong prompt engineering.