Kai Wu
Software Engineer at Google
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolKai Wu is a software engineer with nine years of experience building messaging infrastructure and SDKs at Google, where he currently owns backend services for Chrome Webpush federation and Firebase Messaging. He has deep full-stack expertise across client SDKs (Android, iOS, Web) and server-side messaging infrastructure, and has contributed notable improvements to the widely used Firebase JavaScript SDK and quickstart samples. Kai’s work spans production-grade integration tests, RxJS compatibility fixes, and UX-focused UI refinements—demonstrating both low-level protocol understanding and attention to developer experience. Based in San Jose, he blends an engineering foundation (M.Eng., University of Washington; B.S. in Mechanical Engineering) with pragmatic open-source contributions that improve reliability and message delivery at scale.
9 years of coding experience
2 years of employment as a software developer
Master of Engineering, Master of Engineering at University of WashingtonBachelor’s Degree Mechanical Engineering, Bachelor’s Degree Mechanical Engineering at University of Wisconsin-Madison
English, German
Github Skills (15)
html10
service-worker10
typescript10
javascript10
typescripts10
front-end-development10
fc10
firebase-cloud-messaging10
firebase10
firebase-messaging10
typescript-types10
integration-testing10
webpush9
web-development9
documentation7
Programming languages (8)
Github contributions (5)
firebase/firebase-js-sdk
Mar 2020 - Nov 2022
Firebase Javascript SDK
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:54 reviews, 170 commits, 87 PRs in 2 years 7 months
Contributions summary:Kai primarily contributed to the Firebase Javascript SDK, focusing on enhancements to the messaging and related functionalities. Their work included enabling and improving integration tests for FCM, fixing RXJS compatibility, and refactoring the typing. They also added features for background and foreground message handling, improving message delivery and user experience, and refactored the logging service. The contributions span across the SDK's core components and testing infrastructure.
firebase-databasefirebase-functionsfirebase-dbreal-timefirebase-admin
firebase/quickstart-js
Oct 2020 - Oct 2020
Firebase Quickstart Samples for Web
Role in this project:Front-end Developer
Front-end DeveloperContributions:12 commits, 7 PRs in 2 days
Contributions summary:Kai primarily focused on updating the Firebase Cloud Messaging example's user interface. Their commits included refactoring the UI to use single quotes and aligning the style. They also updated the index.html file, modifying the display of the registration token and permission request elements. Further changes involved updating the vapidKey in the index.html file.
firebase-databasefirestorefirebase-functionsfirebasefirebase-storage
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