Jongcheol Chung
Lead Software Development Engineer at LINEヤフー株式会社
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolJongcheol Chung is a Lead Software Development Engineer with nine years of hands-on backend experience across major Korean and Japanese tech firms, specializing in Java and the Spring ecosystem. He has built scalable B2B ad platforms, healthcare PHR/telemedicine services, travel products, and in-house logging systems at LINE, Yahoo! Japan, and NHN, demonstrating strong domain versatility. Fluent in Korean and Japanese (JLPT N1) and comfortable with Kotlin, MySQL, Elasticsearch, Docker and CI tooling, he pairs solid backend craftsmanship with practical frontend experience in Vue.js. Certified as a Scrum Product Owner and trained in HL7 FHIR, he uniquely combines product-minded leadership with healthcare interoperability awareness. Based in Tokyo’s Chiyoda ward, he’s interested in roles that bridge health and travel services, where his cross-cultural background and system-design focus add measurable value.
9 years of coding experience
10 years of employment as a software developer
Bachelor of Engineering - BE, Computer Science, 3.82 / 4.5, Bachelor of Engineering - BE, Computer Science, 3.82 / 4.5 at Tech University of Korea
Github Skills (7)
apm9
agent9
distributed-tracing9
monitoring9
distributed-systems7
typescript3
java3
Programming languages (2)
Github contributions (5)
jjc89/covid19
Aug 2020 - Nov 2020
大阪府 新型コロナウイルス感染症対策サイト / Osaka COVID-19 Task Force website
Contributions:6 pushes in 2 months
osakatypescriptforcetask-force
jjc89/sambo-golf-public
Jul 2025 - Jul 2025
Contributions:9 pushes, 1 branch in 18 days
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