Seunggon Kim
Staff Back-end Engineer at Coupang
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolSeunggon Kim is a Staff Back-end Engineer based in Seoul with 11 years building high-performance, production-grade distributed systems across messaging, STT, search, and crypto exchanges. He has driven major improvements—200x bidding API performance at a crypto exchange, 2x Elasticsearch latency reduction at LINE, and boosting organic traffic from 250K to 800K monthly through SEO and content engineering at Kinolights—while leading end-to-end platform modernization and cost-optimized cloud operations. Comfortable from low-level performance tuning to service design, he has deep experience with Kafka, Elasticsearch/OpenSearch, Kubernetes, and async/reactive stacks (RxJava, NestJS) and has contributed to the notable Armeria microservice framework by improving its reliability and documentation. A PhD candidate in computer engineering, he pairs rigorous research instincts with pragmatic engineering, often uncovering subtle performance bottlenecks and observability gaps that others miss.
11 years of coding experience
12 years of employment as a software developer
Ph.D. Candidate Computer Engineering, Ph.D. Candidate Computer Engineering at Seoul National UniversityBachelor's degree Computer Engineering, Bachelor's degree Computer Engineering at Kwangwoon University
Korean, English, Japanese
Stackoverflow
161reputation
9kreached
11answers
2questions
Github Skills (17)
netty10
http10
microservices-application10
java10
javas10
microservices10
thrift9
maintainability9
grpc9
debugging8
logic6
combinations6
recursion6
dictionary6
counter6
Programming languages (9)
Github contributions (5)
line/armeria
Aug 2019 - Jun 2021
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 & Bug Fixer
Back-end Developer & Bug FixerContributions:66 reviews, 9 commits, 11 PRs in 1 year 9 months
Contributions summary:Seunggon primarily contributed to fixing typos, improving documentation, and addressing various minor issues within the `line/armeria` repository, a microservice framework. Their work involved correcting code comments, log messages, and code itself across multiple files related to core functionalities, testing, and build processes. The contributions demonstrate a focus on code quality, improving the clarity and maintainability of the codebase, and ensuring the stability of the Armeria framework.
dropwizardgogrpckotlinmicroservice-framework
hexoul/ether-stealer
Aug 2018 - Sep 2022
Steal Ethereum or ERC20 tokens from private key generated randomly
Contributions:6 releases, 57 commits, 1 PR in 4 years 1 month
erc20ethereumprivate-keyaccountmining
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