Koji Lin
Division Lead(Manager) at LY Corporation
Fukuoka Prefecture, Japan
Summary
🤩
Rockstar🎓
Top SchoolKoji Lin is a seasoned software leader with 14+ years of hands-on experience building Java-based web and client/server systems and mobile apps, now leading a division out of Fukuoka, Japan. He combines deep backend expertise—demonstrated by contributions to the well-regarded Armeria microservice framework—with practical troubleshooting skills across application, network and infrastructure domains. As a manager he has scaled and guided multiple teams at LINE, driving hiring strategy, 1:1 coaching, and cross-team problem resolution. His early work improving messaging server concurrency and building analytics/admin tools shows a pragmatic focus on performance and operability. Comfortable both shipping code and setting technical direction, he brings a blend of engineering rigor and people leadership to complex distributed systems.
14 years of coding experience
18 years of employment as a software developer
Master, Computer science, Master, Computer science at Yuan-Ze University
chinese (mandrin), Japanese, English
Github Skills (11)
tomcat10
javas10
http10
microservices-application10
microservices10
retrofit10
java10
thrift9
grpc9
netty9
metric9
Programming languages (6)
Github contributions (5)
line/armeria
Aug 2016 - Jan 2023
Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:118 reviews, 65 commits, 87 PRs in 6 years 6 months
Contributions summary:Koji contributed to the Armeria framework by modifying the metric names for HTTP request/response and fixing a bug related to directory creation when using WAR files with TomcatService. The user also addressed memory management concerns by avoiding the creation of large objects when retrieving large responses. Additionally, they fixed an issue with the handling of session protocols in the Armeria-retrofit integration and enhanced annotated HTTP service exception handling.
rpcmicro-frameworkretrofitprotobuftype-of
kaif-open/kaif-android
Apr 2015 - May 2018
Contributions:1 release, 90 commits, 20 PRs in 3 years
android-appkotlinandroid
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