Senior Web Security Engineer, Browser Platform

You'll also maintain incident detection and response capabilities for the company, and work on general security related projects. Recent projects include:

• Browser security audits
• SERP security mitigations

As a Senior Web Security Engineer, Browser Platform, you'll conduct browser security audits (special pages, DuckAI integrations, password manager, etc.), execute on SERP security mitigations (XSS prevention, tooling development to help engineers write safer code), manage application security scanning infrastructure setup (aka SAST/DAST integrations in GitHub), and deliver on Internal red-team operations (simulated attack scenarios), support security triage, and more!

About You

• 7+ years of experience in web or application security (performing security assessments, vulnerability research, penetration testing, or secure code review)
• Advanced programming or scripting experience with JavaScript. Any additional experience with our stack is a bonus: Swift/Kotlin/C#/JavaScript (native apps) or JavaScript/Perl/Go (search).
• Experience with at least one WebView technology (WebKit, WebView2, Chromium WebView, etc.) and understanding of browser security models (SOP, CSP, CORS, SameSite cookies)
• Hands-on experience identifying and exploiting web vulnerabilities (XSS, CSRF, injection attacks, authorization flaws, etc.)
• Familiarity with security testing tools and frameworks
• Experience partnering and collaborating with Product Engineers, advising on security matters and helping teams ship secure code faster
• Experience shaping how an organisation thinks about security - driving best practices, improving processes, and raising the bar across teams