Design, build, and ship production AI features and agentic systems, including multi-agent orchestration, tool and function calling, retrieval and RAG patterns, structured output, memory and state management, prompt and context engineering, and human-in-the-loop approval flows. Must maintain a publicly accessible profile (GitHub, personal website, or professional portfolio) demonstrating work built and contributed to, including code samples and at least one shipped agentic or AI-powered project the candidate can demo and explain in depth.