Arthur Edelstein is a privacy-focused software engineer and product leader with 15 years of experience building browser privacy features and tooling. He has shipped core protections at Tor, led privacy product work at Mozilla (including Enhanced Tracking Protection, Total Cookie Protection, and HTTPS initiatives), and contributed backend privacy engineering to Brave’s browser core. As creator and maintainer of PrivacyTests.org he runs weekly automated audits that make browser privacy performance transparent to the public. Based in California with a PhD-level scientific background, he combines rigorous research habits with hands-on engineering—often surfacing subtle fingerprinting and query-parameter leaks and turning them into concrete mitigations.
15 years of coding experience
16 years of employment as a software developer
PhD Physics, PhD Physics at University of California, Berkeley
BS Physics, BS Physics at University of Illinois Urbana-Champaign
Core engine for the Brave browser for mobile and desktop. For issues https://github.com/brave/brave-browser/issues
Role in this project:
Back-end Developer
Contributions:324 reviews, 64 commits, 157 PRs in 8 months
Contributions summary:Arthur primarily focused on modifying the core engine for the Brave browser. Their contributions included implementing conditional query parameter stripping, adding unit tests to validate the changes, and addressing related issues. They also made changes related to anti-fingerprinting efforts, modifying API behavior to hide screen size and window position data, and adjusting media query handling. Furthermore, they have also made changes to HTTPS upgrade interceptor and webcompat exceptions service.
Source code for privacytests.org. Includes browser testing code and site rendering.
Contributions:2153 commits, 2 PRs, 1890 pushes in 5 years 1 month
browserprivacytestingrenderingcode-testing
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.