Seunghyeon Kim
Principal Engineer at Commvault
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolSeunghyeon Kim is a Principal Engineer with 11 years of experience building resilient backend systems and distributed services from Seoul, currently driving platform work at Commvault after Clumio's acquisition. He has strong hands-on expertise in microservice frameworks (notably contributing server-side features to the widely used Armeria project), Java/Spring architectures, and performance-focused data pipelines. Past roles include scaling Coupang Eats merchant services and optimizing AutoML training and inference pipelines at Kakao Brain, where he cut training costs and latency through pruning and bottleneck removal. Seunghyeon blends deep systems design with practical QA and automation skills—he’s improved test coverage for core Python tools like isort in addition to shipping production Java services. He is known for pragmatic API and server design choices that balance usability (annotation-based decorators, customizable logging/CORS) with operational robustness. A high-achieving Hanyang University CS graduate, he combines academic rigor with a track record of measurable efficiency gains in production environments.
11 years of coding experience
7 years of employment as a software developer
학사, Computer Engineering, 4.08 / 4.5, 학사, Computer Engineering, 4.08 / 4.5 at 한양대학교
Stackoverflow
1reputation
0reached
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Github Skills (25)
cors10
pytest10
python10
apidoc10
annotations10
testing10
http10
microservices-application10
java10
javas10
rpc10
isort10
api10
logging10
microservices10
Programming languages (5)
Github contributions (5)
line/armeria
Jan 2019 - Jul 2019
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:9 commits, 11 PRs, 51 comments in 6 months
Contributions summary:Seunghyeon's contributions primarily involved enhancing the Armeria framework's server capabilities. They focused on adding features such as customizable access loggers for virtual hosts and supporting different CORS policies for different origins. The user also implemented annotation-based CORS decorators to improve usability and added support for custom headers and trailers in annotated services. These changes showcase expertise in server-side development and API design within a microservice framework.
rpcmicro-frameworkretrofitprotobuftype-of
PyCQA/isort
Jul 2020 - Jul 2020
A Python utility / library to sort imports.
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:5 commits, 1 PR, 1 comment in 2 days
Contributions summary:Seunghyeon focused on improving the quality and reliability of the `isort` project by adding and modifying test cases. They implemented tests to cover specific scenarios involving imports within quotes and corrected existing tests. The user also addressed linting errors in the test files, indicating an effort to maintain code quality and adhere to project standards. This work contributes to ensuring the correctness of the import sorting functionality.
linterpythonpython-utilitysort-importsauto-formatter
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