Fabienne Bühler
CPO & Co-Founder at ZITADEL
St. Gallen, St. Gallen, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolFabienne Bühler is a product-focused engineering leader and co-founder with eight years of experience building identity and access management infrastructure from the ground up. As CPO at ZITADEL, she combines hands-on Go backend development—contributing to core OpenID Connect libraries and gRPC-based administrative services—with product-led growth and open-source community building. Her work on zitadel/oidc demonstrates attention to security and protocol correctness, improving authorization validation and token audience handling. Based in St. Gallen, Switzerland, she blends formal product management training with a technical apprenticeship background, enabling pragmatic delivery across product, engineering and developer experience. Fabienne is at the intersection of SaaS productization and developer tooling, quietly shaping an enterprise-grade IAM platform while learning sales motions and community-driven distribution.
7 years of coding experience
11 years of employment as a software developer
CAS FH Digital Product Management, CAS FH Digital Product Management at Kalaidos University of Applied Sciences SwitzerlandTechnikerin HF Informatik, Technikerin HF Informatik at ZbW - Zentrum für berufliche WeiterbildungInformatikerin EFZ, Informatikerin EFZ at GBS Gewerbliche Berufsschule St. Gallen
Github Skills (15)
openid-connect10
oid10
go10
back-end-development10
oauth10
api-design10
grpc10
protocol-buffers10
testing10
clientside9
jwt9
server9
webclient9
golang8
standard-library8
Programming languages (10)
Github contributions (5)
zitadel/zitadel
Mar 2020 - Jan 2023
ZITADEL - Identity infrastructure, simplified for you.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1187 reviews, 636 commits, 970 PRs in 2 years 10 months
Contributions summary:Fabienne implemented administrative service features by adding protocol buffer files and implementing gRPC methods for interacting with the underlying systems. This included adding support for features like org setup and unique checks, indicating a focus on core functionality. The code changes involved adding new proto files with definitions for objects and methods, alongside generated files, demonstrating a good grasp of the project's architecture.
serverlesskeycloakzitadelbest-ofera
zitadel/oidc
Jul 2020 - Jan 2023
Easy to use OpenID Connect client and server library written for Go and certified by the OpenID Foundation
Role in this project:Back-end Developer
Back-end DeveloperContributions:48 reviews, 33 commits, 42 PRs in 2 years 6 months
Contributions summary:Fabienne primarily focused on enhancing the OpenID Connect client and server library, as evidenced by the commit messages. They addressed bugs related to authorization request validation, including scope, redirect URI, and response type checks. The user also implemented features, such as adding the prompt option and incorporating the client ID in the audience of tokens, and included updates to test files to improve the overall reliability of the project. These changes showcase a focus on improving the security and functionality of the OIDC implementation.
openidconnectopenid-connect-clientserver-librarycertifiedpkce
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