Shin Fan
Software Engineering Manager at Google
Greater Seattle Area United States
Summary
🤩
Rockstar🎓
Top SchoolShin Fan is a software engineering manager with 11 years of experience building Zero Trust, identity, and API infrastructure at Google, currently leading certificate-based (mTLS) access for VPC Service Controls on Google Cloud. He combines hands-on backend expertise—demonstrated by contributions to widely used open-source projects like google-auth-library-java and the google-api Go client—with leadership in designing secure developer experiences and API tooling. Shin has deep familiarity with auth flows, JWT/OAuth handling, and client library generation, having improved credential handling, streaming support, and configurability in tooling like gapic-generator. A Waterloo computer science graduate, he pairs engineering rigor with practical security design, often focusing on internal refactors and API ergonomics that quietly improve long-term maintainability.
11 years of coding experience
9 years of employment as a software developer
Bachelor's Degree (with Distinction) Computer Science, Bachelor's Degree (with Distinction) Computer Science at University of Waterloo
Github Skills (20)
builder-pattern10
api-client10
configuration-management10
http10
user-authentication10
authentication10
google-auth-library10
java10
javas10
go10
google-auth10
oauth10
unit-testing9
yaml9
jwt9
Programming languages (12)
Github contributions (5)
googleapis/gapic-generator
Dec 2015 - Sep 2017
Tools for generating API client libraries from API Service Configuration descriptions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:108 commits, 153 PRs, 74 pushes in 1 year 9 months
Contributions summary:Shin's contributions centered on enhancing the `googleapis/gapic-generator` repository, focusing on generating API client libraries. They integrated service address and scope data from configuration files and merged related changes. The user also implemented a config generator for the Veneer toolkit, enabling the generation of configuration files. Furthermore, they added support for page streaming in the config generator and included various fixes.
api-clientapigrpcconfiguration-serviceclient-libraries
googleapis/google-auth-library-java
Aug 2017 - Oct 2020
Open source Auth client library for Java
Role in this project:Back-end Developer
Back-end DeveloperContributions:14 commits, 8 PRs, 11 pushes in 3 years 2 months
Contributions summary:Shin's primary focus was on refactoring and improving the `UserCredentials` class, a core component of the Google Auth library for Java. They switched the OAuth2 HTTP surface to use the builder pattern, enhancing the class's structure and maintainability. The commits also involved updates to related classes, including `ServiceAccountCredentials`, `ClientId`, and test classes, demonstrating a commitment to comprehensive code improvements and adherence to best practices. These changes centered on improving the library's internal workings.
client-authclient-libraryauthenticationoauth2java
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