Cedric Staub

San Francisco Bay Area United States

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Summary

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Rockstar

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Top School

Cedric Staub is a seasoned engineering leader with 13 years of experience, currently directing engineering at Pinterest after a formative tenure at Square. He specializes in backend systems, security, and secrets management, having contributed substantial code and features to high-profile open-source projects like gosec, certstrap, certigo, go-jose, and Keywhiz. Cedric’s work shows a consistent focus on hardening cryptographic tooling and certificate handling—adding intermediate CA support, keystore parsing, OCSP/status features, and checks for weak randomness. He combines hands-on coding with product-minded leadership, improving observability, error handling, and maintainability across distributed services. Based in the San Francisco Bay Area and educated at ETH Zurich, he blends rigorous academic roots with practical, production-grade security engineering. A detail-minded contributor, he often tackles less-visible but critical plumbing—dependency management, output formats, and protocol edge cases—that materially raises system reliability.

13 years of coding experience

Eidgenössische Technische Hochschule Zürich

English, German, French

Github Skills (47)

crypto10

static-code-analysis10

encrypt10

tls1210

cert10

base64url10

security-txt10

back-end-development10

apidoc10

testing10

secret-management10

json-web-signature10

decode10

tls1310

java10

Programming languages (9)

JavaShellCSSRustCJavaScriptGoHaskell

Github contributions (5)

square/certigo

Jun 2016 - Sep 2022

A utility to examine and validate certificates in a variety of formats

Role in this project:

Back-end Developer & Security Engineer

Contributions:19 releases, 248 commits, 159 PRs in 6 years 4 months

Contributions summary:Cedric primarily focused on enhancing the security and functionality of the `square/certigo` repository. Their contributions include implementing features related to JCEKS keystore parsing, which included adding a sub-package and supporting the Java Cryptography Extension Key Store format. Further contributions involve improving the reliability of the certificate utility, including adding support for printing OCSP status and implementing HTTP(S) CONNECT proxy support, and fixing several bugs that increased the stability of the overall system.

signingcertificate-generationjceksvalidatecli

square/go-jose

Dec 2014 - Nov 2022

An implementation of JOSE standards (JWE, JWS, JWT) in Go

Role in this project:

Back-end Developer

Contributions:28 releases, 10 reviews, 382 commits in 8 years

Contributions summary:Cedric's commits focused on enhancing the functionality and maintainability of the `go-jose` library, specifically related to JSON Web Signature (JWS) and JSON Web Encryption (JWE) standards. They addressed code coverage gaps, refactored to remove external dependencies, improved padding handling in the cipher package, and standardized header parsing. The user also refactored internal API to improve error handling and streamline various serialization and de-serialization code paths.

golangsigningjosejson-web-tokenjwe

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