Principal Machine Learning Engineer, Agentic AI

Zillow is a leading real estate platform that is transforming the industry through AI technologies. They are seeking a Principal Machine Learning Engineer to develop advanced multimodal foundational technologies and drive product innovation by prototyping and deploying AI models within their scalable infrastructure.

Responsibilities:

• Leverage frameworks like AgentSDK, and LangChain/LangGraph to design, prototype, and develop multi-agent systems that are capable of highly autonomous and context-aware interactions
• Leverage advanced GenAI models including reasoning models, real-time voice API, etc, to build agentic prototypes and later on convert them into product-level agentic skills and deploy to users
• Have the mentality of “build, learn, and pivot”, and hold the high bar of shipping into production
• Mentor and guide engineers in using the right technologies for agentic AI solutions and foster a culture of innovation and responsible AI usage
• Distill complex research findings and system designs into actionable insights for diverse audiences—including executives
• Remain on the cutting edge of agentic AI emerging paradigms, driving product innovation
• Serve as the focal point for applied science projects, driving alignment on timelines, and prioritization
• Continuously refine processes for experimentation, A/B testing, and production rollouts to balance rapid innovation with reliability and responsible deployment

Requirements:

• A master's degree or above, equivalent experience in Computer Science, Electrical Engineering, or a related field with emphasis on foundational LLM, agentic AI, reinforcement learning, AI planning, or natural language processing
• 7+ years of hands-on work building large-scale, high-impact solutions—ideally in the most recent two years building agent-based systems, multi-agent collaboration, or similar paradigms
• Experience developing dialogue systems capable of long conversations, multi-step reasoning, context-rich decision-making
• Experience deploying and scaling AI services capable of handling hundreds of millions of daily interactions with high availability, low latency, and robust fault tolerance
• A track record of publishing high-impact research in top AI/ML venues is a big plus