Zillow
Senior Fullstack Engineer, Mortgage Fulfillment AI
$156K–$263K
Remote-USA · Remote · Senior · Full-time · Posted Oct 20, 2026
- Experience
- 8+ years of professional software engineering experience.
- Education
- Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field, or an equivalent combination of education and experience.
About the job
Designs, builds, and operates production-grade agentic AI systems and infrastructure to automate mortgage fulfillment workflows from application through funding.
What you'll do
- Build multi-step agents and robust integrations to coordinate document collection, condition clearing, and closing workflows.
- Develop evaluation frameworks and use results to improve agent reliability, accuracy, prompts, models, and fallbacks.
- Architect and operate agent infrastructure, and set engineering practices for testing, observability, incident response, and reliability.
What they ask for
- 8+ years of professional software engineering experience, including scalable, reliable services in a modern cloud environment.
- End-to-end ownership of an AI or ML system in production, including design, shipping, measurement, and iteration.
- Hands-on experience in at least two areas: evaluation pipelines, LLM or ML serving and multi-step AI orchestration, or third-party integrations and external APIs.
- Strong infrastructure instincts, AI fluency, and a measurement-focused approach.
Pay
$164,400.00 - $262,600.00 USD annual base salary; $156,200.00 - $249,400.00 USD annual base salary
Tools
Encompass, DocuTech
AI focus
Builds multi-step AI agents for mortgage fulfillment, evaluation frameworks for reliability and accuracy, and infrastructure for serving and operating agents safely.
Model-written summary · the original posting is authoritative