Principal Security Engineer

🕒 May 8

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Logo of Zillow

Zillow

5001 - 10000 employees

Founded 2006

🏠 Real Estate

🛍️ eCommerce

👥 B2C

💰 $4.1M Post-IPO Equity on 2012-12

Real Estate • eCommerce • B2C

Zillow is a leading real estate and property rental marketplace that provides comprehensive information on homes, apartments, and properties for sale or rent. It offers users tools to search for properties, calculate mortgage rates, and connect with real estate agents. The platform also features innovative algorithms that provide Zestimates, which are estimated market values of homes. Zillow is a go-to resource for individuals looking to buy, sell, or rent properties, as well as for agents and brokers who want to reach a wider audience.

📋 Description

• Lead security assessments for high-impact applications and services, including threat modeling, secure design reviews, and penetration testing • Identify, validate, and prioritize complex vulnerabilities across web applications, APIs, and cloud-native services, and partner with engineers to drive secure-by-default outcomes • Strengthen the security of primarily AWS-based environments, with additional exposure to GCP and Azure • Drive AI security initiatives by establishing guardrails, review practices, and secure design patterns for AI-enabled features and systems • Assess AI-specific risks, including data exposure, misuse, model abuse, prompt-based attacks, and unintended system behavior • Develop and promote scalable application and AI security standards, best practices, and guardrails across teams • Improve application and AI security tooling through configuration, integration, and ongoing optimization in partnership with engineering and platform teams • Mentor and influence engineers across teams, raising the technical bar and helping embed security into the way Zillow builds and ships software

🎯 Requirements

• 7+ years of security engineering experience, including strong experience in application security and ownership of complex security outcomes • Experience driving or owning AI security initiatives and assessing or mitigating risks in AI- or LLM-enabled systems • Experience leading advanced security assessments across modern applications, cloud infrastructure, and AI-enabled systems • Strong understanding of common vulnerability classes, secure software development practices, and threat modeling • Hands-on experience securing cloud-native environments, especially AWS, and designing secure system or cloud architectures • Ability to read, write, and review code in at least one modern programming language • Ability to communicate security risks clearly to both technical and non-technical partners and influence decisions without formal authority • Experience mentoring engineers and helping raise the technical bar across a team or organization

🏖️ Benefits

• Competitive base salary • Equity awards based on experience, performance and location • Health insurance • Professional development opportunities

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