Benjamin Beurdouche

Head Of Strategic Initiatives And BD, Firefox Enterprise

Paris, Ile-de-France
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Summary

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Benjamin Beurdouche is a security researcher and engineering leader with 14 years of experience designing, analyzing, and implementing Internet security and privacy protocols like TLS 1.3 and MLS, now leading Strategic Initiatives and BD for Firefox Enterprise at Mozilla. He bridges formal methods, cryptography, and production systems—contributing to projects such as the F* proof-oriented language, MDN Web Docs, and Mozilla’s gecko-dev MLS implementation—bringing research-grade rigor to real-world deployments. A frequent program committee member for top venues (IEEE S&P, Real World Crypto, NDSS, CHES) and a published academic, he moves between standards bodies (IETF, W3C) and hands-on engineering. Based in Paris, he has a PhD background from École normale supérieure and a track record of taking on projects others deem impossible, turning protocol-level theory into practical, auditable implementations.
code14 years of coding experience
job1 year of employment as a software developer
bookPhD / Doctorat Mathematics and Computer Science, PhD / Doctorat Mathematics and Computer Science at Ecole normale supérieure
book4ème Session Nationale - Majeure Souveraineté Numérique et Cybersécurité (SNC 7), 4ème Session Nationale - Majeure Souveraineté Numérique et Cybersécurité (SNC 7) at Institut des hautes études de défense nationale (IHEDN)
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Stackoverflow

Stats
81reputation
223reached
2answers
0questions
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Github Skills (24)

programming-language10
c-language10
dependent-types10
apidoc10
mdns10
mdc10
api10
formal-verification10
webapi10
mdt10
html10
theorem-proving10
rust10
cprogramming-language10
mozilla10

Programming languages (20)

C++RustCF*CoqMakefileTeXFluent

Github contributions (5)

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FStarLang/FStar

Nov 2014 - Nov 2019

A Proof-oriented Programming Language
Role in this project:
userBack-end Developer
Contributions:2 releases, 5 reviews, 401 commits in 5 years
Contributions summary:Benjamin primarily contributed to the F* language project by merging branches and modifying source code files related to the backend functionality. Their changes included modifications to core library files, and code translaters. These changes appear to be aimed at fixing potential vulnerabilities within the system.
homotopy-type-theorycoq-librarytype-theorysat-solvercompiler
mozilla/gecko-dev

May 2020 - Feb 2022

Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org. How to contribute: https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
Role in this project:
userBackend Developer
Contributions:67 commits in 1 year 9 months
Contributions summary:Benjamin primarily contributed to the backend functionality of the project. Their work includes implementing the Messaging Layer Security (MLS) module and associated Web API, which involves Rust and C++ code interactions and database state management. The user also worked on updating and vendoring dependencies for the MLS platform API and integrated MLS state management with the existing clear data service. Their efforts focused on improving security and extending the API's capabilities.
repositoriesfirefoxmercurialgit-mirrormozilla
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Benjamin Beurdouche - Head Of Strategic Initiatives And BD, Firefox Enterprise