Senior Web Browser Researcher

📋 Description

• Lead independent technical research into browser behavior and identification techniques, ensuring
• Research novel device-identification, visitor-identification, Smart Signals, and bot-detection
• Evaluate research findings against real-world constraints (performance budgets, execution contexts
• Design and conduct experiments, analyze supporting data, and deliver clear recommendations with
• Stay involved throughout implementation by reviewing engineering changes and advising on edge cases.
• Build and maintain automated research tooling (observers, fuzzers, scrapers) to discover new

🎯 Requirements

• Deep understanding of web platform fundamentals, browser internals, and web security concepts.
• Strong proficiency in JavaScript and ability to read/understand code in multiple programming
• Solid knowledge of web networking fundamentals.
• Ability to uncover and explain undocumented behavior in web technologies, APIs, and protocols
• Experience independently driving research from idea through experimentation, validation, and
• Ability to design and execute experiments using real-world traffic and analyze large-scale datasets.

🎁 Benefits

• Competitive salary: $174,000–$235,000 annually for US-based employees.
• Location-based compensation ranges (e.g., $204,000–$235,000 in NYC, $174,000–$200,000 in Chicago).
• Fully remote work with a globally distributed team.
• Meaningful technical impact on device-intelligence and fraud-detection products.
• Research and innovation on open-ended problems in browser internals, web security, and
• Professional growth through mentorship, technical reviews, and public research contributions.