Maxim Tsoy
Senior Privacy Engineer at DuckDuckGo
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolMaxim Tsoy is a Senior Privacy Engineer based in Amsterdam with 12 years of hands-on experience building privacy-first web and platform features. Currently at DuckDuckGo, he coordinates cross-platform privacy implementations, maintains the Tracker Radar dataset, and represents the company in W3C privacy discussions while still shipping code across macOS, Android, iOS, Windows, and web extensions. Previously he led research and incubation engineering at Surfly, building browser virtualization, anti-fingerprinting proxies and complex sandboxing systems that blend browser compatibility with security. His background in competitive CTF teams and vulnerability research informs a pragmatic, adversary-minded approach to product privacy and secure design. He also contributes to algorithmic open-source work—porting and optimizing Kociemba’s Rubik’s Cube solver in Python and C—highlighting a mix of low-level optimization and large-scale privacy engineering.
12 years of coding experience
7 years of employment as a software developer
Specialist, Computer Security, 5/5, Specialist, Computer Security, 5/5 at Tomsk State University
English, Dutch, Russian
Stackoverflow
593reputation
27kreached
5answers
4questions
Github Skills (21)
algorithm10
algorithms10
python10
data-structure10
data-structures10
c119
performance-optimization9
optmization9
optimisation9
c179
optimization9
recursion8
cffi8
introspection6
dictionary6
Programming languages (22)
Github contributions (5)
muodov/kociemba
Jun 2015 - Feb 2022
A pure Python and pure C ports of Kociemba's algorithm for solving Rubik's cube
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 101 commits, 30 PRs in 6 years 9 months
Contributions summary:Maxim primarily worked on a Python and C implementation of Kociemba's algorithm for solving a Rubik's Cube. Their contributions include the initial working version, refactoring, and improvements to the codebase. This likely involved creating the move tables, managing data structures, and ensuring the algorithm's core logic functions correctly. The user also focused on optimizing code, as well as caching and loading pruning tables.
python
surfly/API
Jan 2016 - Jul 2017
Surfly API Documentation
Contributions:45 commits, 29 PRs, 28 pushes in 1 year 5 months
apiapi-documentation
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