Sunghyun Choi
Back End Developer at (주)우아한형제들 (Woowa Bros.)
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolSunghyun Choi is a Back End Developer based in Seoul with nine years of experience building high-performance services using Java and Kotlin on Spring. At Woowa Bros. he played a key role in transforming a monolithic exhibition service into microservices, and applied CQRS and asynchronous patterns to boost API speed by over 50%. His stack spans databases and messaging systems including Redis, DynamoDB, MySQL/PostgreSQL and Kafka, enabling robust, low-latency data flows. Prior experience as an electronic engineer at LG Display and intensive bootcamp training at KAIST give him a strong systems-thinking approach and hardware-aware pragmatism. He favors measurable optimizations and architectural changes that scale, not just tactical fixes. Colleagues describe him as the kind of backend engineer who pairs deep implementation detail with a clear eye for system-level impact.
9 years of coding experience
4 years of employment as a software developer
Bachelor's degree, 전자설계 및 전자공학 CAD/CADD, 3.43, Bachelor's degree, 전자설계 및 전자공학 CAD/CADD, 3.43 at 서강대학교
English, Korean
Github Skills (9)
quartz-scheduler9
jpa8
java8
admin8
vue7
scheduler7
monitoring7
element-ui6
quartz5
Programming languages (1)
Github contributions (5)
ChoiJoongHyun/quartz-vue-admin
Jul 2019 - Aug 2019
Quartz-Vue-Admin is an application for monitoring Quartz Scheduler
Contributions:87 commits, 86 pushes, 1 branch in 1 month
adminspringbootschedulerelement-uivue
ChoiJoongHyun/book-report
Jul 2018 - Nov 2018
Contributions:25 commits, 22 pushes, 1 branch in 3 months
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