Browser Security Engineer

This range is provided by Perplexity. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$/yr - $/yr

About

The Role

As Comet continues to grow as a stand‑alone product and codebase, we are seeking a Browser Security Engineer to lead and own browser‑specific security initiatives, including custom Chromium development, extension security, and cross‑device features.

What You’ll Do

• Lead threat modeling and security architecture reviews for all Comet browser surfaces.

• Collaborate closely with product and engineering teams to proactively identify and mitigate browser vulnerabilities, especially issues specific to custom Chrome engineering and browser extension architecture.

• Develop security best practices, tooling, and documentation for engineers building browser‑facing features.

• Serve as the security expert for topics such as Same‑Origin Policy (SOP), XSS, sandboxing, browser extension permissions, and secure inter‑device communication.

• Triage and resolve vulnerabilities found by external researchers (e.g., bug bounty, red‑teaming partners) and the Chromium community.

• Build strong relationships with security partners and leverage their feedback for continuous improvement.

• Stay up to date on emerging browser security threats, tools, and industry trends.

What We're Looking For

• Prior experience in browser, application, or product security (ideally with Chrome/Chromium or other browser engine experience).

• Deep knowledge of modern browser architectures; understanding of XSS, CSP, sandboxing, extension security, and Web View‑specific threats.

• Experience with security reviews and threat modeling for web, mobile, and extension platforms.

• Ability to work cross‑functionally with engineers, product leads, and external security researchers.

Nice to Have

• Contributions to open‑source browser projects, security research, or participation in bug bounty programs.

• Experience with web and mobile threat modeling.

• Familiarity with secure sync and cross‑device communication mechanisms.

• Track record of proactive security work embedded within product teams.

Why Join Us

• Shape security strategy for a next‑generation browser product.

• Work on challenging problems at the intersection of custom Chromium engineering, browser extensions, and mobile security.

• Collaborate with top engineers in an environment that prioritizes security and product excellence.

Compensation Range

$250K - $350K

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology

Industries

Software Development

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