Yu Matsubayashi
本部長 at FOLIO Co., Ltd.
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolYu Matsubayashi is a seasoned software leader with 12 years of experience specializing in distributed systems, NewSQL, and modern engineering practices, currently leading technology at FOLIO in Chiyoda. He progressed from back-end developer to 部長 and now 本部長, blending hands-on Scala/Finagle expertise with strategic leadership. An active open-source contributor, Yu has improved build tooling, documentation, and core query logic in high-profile projects like Twitter’s Finatra/Finagle and ZIO Quill, signaling a focus on maintainability and developer experience. He holds a Master of Engineering from Waseda University and is known for pragmatic upgrades—such as smoothing sbt/plugin migrations—that quietly keep large systems healthy.
12 years of coding experience
Master of Engineering - MEng, Master of Engineering - MEng at Waseda University
Japanese, English
Github Skills (24)
testing10
finagle10
sbt10
distributed-systems10
jdbc10
scala10
rpc10
build-automation10
finatra10
documentation10
application-framework9
java9
app-framework9
databases9
http9
Programming languages (8)
Github contributions (5)
twitter/finatra
Apr 2017 - May 2017
Fast, testable, Scala services built on TwitterServer and Finagle
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 10 PRs, 6 comments in 1 month
Contributions summary:Yu primarily contributed to the Finatra framework, focusing on fixing bugs and updating dependencies. Their work included adding missing files to test archives, fixing documentation, and updating build configurations. The user also addressed documentation inconsistencies and updated sbt-unidoc and sbt-jmh plugin versions, reflecting a focus on project maintainability and build process improvements. Finally, they updated sbt to a newer version.
guicetwitter-serverfinagletestingframework
twitter/finagle
Apr 2017 - Jul 2017
A fault tolerant, protocol-agnostic RPC system
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits, 5 PRs, 1 comment in 3 months
Contributions summary:Yu primarily contributes to documentation fixes within the Finagle repository. Their work involves correcting incorrect links, updating outdated information, and resolving discrepancies in the documentation of various Finagle components, including metrics and APIs. The user also addressed issues related to deprecated sbt operators and migration steps, demonstrating involvement in build configurations and project setup. These changes enhance the clarity and accuracy of the documentation, improving the usability of the Finagle framework.
fault-tolerantrpcredismysqlfinagle
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.