Principal Full Stack Software Development Engineer

About the team At Zillow our mission is to give people the power to unlock life’s next chapter. Zillow’s AI Org plays an important part in delivering unique AI-powered experiences for the hundreds of millions of customers that visit Zillow websites each month. As a Principal Software Engineer on the Transaction AI team, you’ll be partnering with a highly skilled group of applied scientists, software developers, and machine learning engineers working together toward a bold and audacious goal. The Transaction AI team at Zillow is focused on bringing agentic AI powered products and services to real estate agents, loan officers, and the buyers they are helping have a smoother and more delightful experience. We co-build end-to-end applications and AI-driven services that help agents and loan officers use their time more efficiently, giving them more insight into how to help each buyer they are interacting with. We also develop and own internal tooling such as Agentic Evaluation harnesses and tools that our partner teams across the company working to bring Agentic AI products to market move faster. Learn more about what we are doing at https://www.zillow.com/engineering and https://www.zillow.com/ai About the role We are seeking a collaborative, customer-focused, and product-minded engineer with deep experience with data infrastructure and backend development. The ideal candidate m [... source excerpt omitted ...] te about building tools and experiences that showcase the capabilities of machine learning and AI and helping the team leverage their engineering chops to solve customer problems. You will work closely with senior leaders and principal engineers across the AI organization to help guide our architecture and technical strategy around agentic AI and will be a critical technical voice to the Transaction AI leadership team. You Will Collaborate closely with applied scientists, engineering, design, and research to understand, scope, design, prototype, implement, and iterate on internal and external facing systems supporting and implementing next-generation AI applications. Lead smal [... source excerpt omitted ...] Employees in this role will not be paid below the salary threshold for exempt employees in the state where they reside. Who you are 8+ years of experience building and shipping production-grade software or services Strong understanding of software design patterns and principles An understanding of the Machine Learning product development cycle and excitement to learn more about it You are comfortable contributing across the stack, including ETL, backend services, and product front-end. You are fluent in languages such as Python, Typescript, and Javascript. Strong use of and familiarity with AI coding tools and effective patterns of deploying AI agents to multiply your impac