Takaaki Shimbo
Senior Software Engineer at LINE Corp
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolTakaaki Shimbo is a senior software engineer based in Tokyo with nine years of experience designing scalable architectures and improving system performance. At LINE Corp he led the technical design of a part-time job service serving 8 million users, cut recommendation delivery time from two hours to minutes, and drove a successful migration from VMs to Kubernetes. He built robust logging, monitoring and messaging pipelines that support 30+ message types and implemented OpenID Connect–based auth for the product. A proficient Java back-end developer, he contributes to the popular Armeria microservice framework—adding gRPC client interceptor support and automatic response compression. He combines hands-on coding, operational troubleshooting and mentoring in architecture reviews, and is comfortable managing major upgrades of core components like MySQL, Elasticsearch and Kubernetes. Notably, his work emphasizes practical scalability: delivering measurable performance gains while improving deployability and observability.
8 years of coding experience
1 year of employment as a software developer
Doshisha University
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (12)
javas10
netty10
java10
grpc10
microservices-application9
microservices9
http9
rpc8
rpc-server8
http-client8
http-server8
rpc-library8
Programming languages (5)
Github contributions (5)
line/armeria
Dec 2021 - 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:110 reviews, 10 commits, 17 PRs in 1 year 1 month
Contributions summary:Takaaki contributed to the `armeria` repository, focusing on enhancing gRPC functionality. Their work included adding the ability to set gRPC client interceptors using `GrpcClientOptions`, and the implementation of automatic response compression. These changes involved modifications to `GrpcClientFactory.java`, `GrpcClientOptions.java` and test files demonstrating the use of these features. The user also added methods to `GrpcServiceBuilder` to decorate gRPC services.
rpcmicro-frameworkretrofitprotobuftype-of
ta7uw/competitive-programming
Jul 2018 - Mar 2020
AtCoder Participation record. Goal: Rating 1200 during 2018
Contributions:3 PRs, 419 pushes, 1 branch in 1 year 8 months
goalratingrecordatcoderparticipation
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.