Zillow · 20 hours ago
Principal Security Engineer
United States
Full-time
Remote
Senior Level, Lead/Staff
$169K/yr - $269K/yr
7+ years expZillow is a leading real estate platform in the U.S. seeking a Principal Security Engineer to enhance security across applications and cloud environments. The role involves leading security assessments, mentoring engineers, and driving AI security initiatives to ensure the safety and reliability of Zillow's products and services.
MarketplaceOnline PortalsPropTechReal Estate
Responsibilities
Lead application security assessments, including scoping and managing penetration testing, threat modeling, and secure design reviews for high-impact systems
Identify, validate, and prioritize complex security vulnerabilities across web applications, APIs, and cloud-native services
Partner with software engineers to embed secure-by-default patterns into application architectures and development workflows
Influence the security of primarily AWS-based systems, with exposure to GCP and Azure, focusing on identity, networking, data protection, and service integrations
Drive AI security initiatives by establishing guardrails, patterns, and review practices, and assess AI-specific risks such as data exposure, misuse, and unintended behaviors in AI- and LLM-powered systems
Develop and promote scalable application and AI security standards, guardrails, and best practices
Mentor and coach security engineers, raising the technical bar and fostering a culture of security across the team
Serve as a technical owner for application and AI security tooling, responsible for configuration, integration, and ongoing improvement in partnership with engineering and platform teams
Qualification
Required
Minimum of 7+ years of security engineering experience, including at least 5+ years focused on Application Security or penetration testing
Demonstrated experience driving or owning AI security initiatives (2+ years), including assessing and mitigating risks in AI- or LLM-enabled systems
Deep understanding of common vulnerability classes and secure software development practices
Hands-on experience securing cloud-native applications, particularly in AWS environments, and designing secure solutions across modern application and cloud environments
Ability to read, write, and review code in at least one modern programming language
Proven experience designing and implementing secure system architectures, including hands-on threat modeling and security-driven design decisions
Experience communicating security risks clearly to both technical and non-technical partners
Demonstrated ability to mentor engineers and act as a technical leader without formal authority
Benefits
Equity awards based on factors such as experience, performance and location
Company
Zillow
Zillow is an online real estate marketplace for finding and sharing information about homes, real estate, and mortgages. It is a sub-organization of Zillow Group.
5001-10000 employees
H1B Sponsorship
Zillow has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (179)
2024 (150)
2023 (171)
2022 (256)
2021 (239)
2020 (195)
Funding
Current Stage
Public CompanyTotal Funding
$96.63MKey Investors
Legg MasonPAR Capital Management
2016-08-01Post Ipo Equity
2014-04-01Post Ipo Equity
2012-12-12Post Ipo Equity· $4.13M
Leadership Team
Lloyd Frink
Co-Founder & Co-Executive Chair
Rich Barton
Co-founder and Co-Executive Chair
Recent News
Crunchbase News
2026-01-08
Company data provided by crunchbase