Sofia Celi
Senior Cryptography & Security Researcher at Ford Foundation
Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolSofia Celi is a senior cryptography and security researcher with 11 years of experience, currently leading applied post-quantum and privacy-enhancing projects at Brave, including productionizing Private Information Retrieval and ZKP-based TLS attestation. She has a strong operational track record from Cloudflare—where she led a company-wide migration to post-quantum cryptography—and is a Distinguished Paper Award winner at IEEE S&P 2023 and 2023 Pwnie Award finalist. Sofia combines rigorous academic contributions and practical engineering, implementing cryptographic algorithms primarily in Rust and contributing EdDSA support to Cloudflare’s CIRCL and GTK bindings on GitHub. She chairs multiple standards and policy groups (IETF PQUIP and HRPC, W3C Anti-Fraud), advises the Open Technology Fund, and has briefed the UN on human rights implications of emerging tech. Colleagues describe her as someone who bridges deep theoretical research with pragmatic production systems—plus she has a surprising background in classical guitar and e-learning development.
11 years of coding experience
6 years of employment as a software developer
Bachelor of Science - BS, Computer Science, Bachelor of Science - BS, Computer Science at University of LondonTechnical degree with a major in Classical Guitar., Music Performance, General, Technical degree with a major in Classical Guitar., Music Performance, General at Conservatorio Nacional de Música del EcuadorComputer Programming, Computer Programming at Rails Girls Summer of CodeCommunications with a major in Communication and Literature., Communication and Media Studies, Communications with a major in Communication and Literature., Communication and Media Studies at Pontificia Universidad Católica del EcuadorMaster of Science - MS, Computer Science, Master of Science - MS, Computer Science at University of Colorado Boulder
Spanish, English, Italian, French, Latin, Greek, German, Portuguese, Dutch
Stackoverflow
495reputation
46kreached
6answers
14questions
Github Skills (18)
web-widgets10
widgets10
apidoc10
binding10
gtk10
go10
api10
cryptography10
ed2551910
testing9
golang9
elliptic-curve8
macos6
ruby-on-rails6
overriding6
Programming languages (17)
Github contributions (5)
cloudflare/circl
Dec 2019 - Nov 2020
CIRCL: Cloudflare Interoperable Reusable Cryptographic Library
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:137 reviews, 11 commits, 8 PRs in 11 months
Contributions summary:Sofia contributed significantly to the `circl` repository by adding support for various cryptographic functions, specifically focusing on the EdDSA signature scheme. They implemented signing, verification, and context-aware variations of Ed25519 and Ed448, which involved making substantial code changes and adding comprehensive test suites. The user also addressed linting issues and improved code formatting, indicating a focus on code quality. Their work demonstrates a strong grasp of cryptographic principles.
ecdhsikecryptographicgoed25519
gotk3/gotk3
Aug 2017 - Mar 2019
Go bindings for GTK3
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 commits, 4 PRs, 1 comment in 1 year 6 months
Contributions summary:Sofia primarily contributed to the `gotk3` project by implementing wrappers and methods for GTK3 widgets. Their work focused on enhancing the library's capabilities by adding functionality related to mnemonics in `Window` and adding a search feature in `TreeView`. Furthermore, the user fixed casting issues and comments within the project's code, thereby improving the overall quality and usability of the Go bindings for GTK3.
golanggtkgogtk3
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