Dongyoung Lee
Server Developer at Toss Bank(토스뱅크)
South Korea
Summary
👤
Senior🎓
Top SchoolDongyoung Lee is a pragmatic server developer with 9 years of experience building and operating high-throughput Java/Spring backend systems, now contributing at Toss Bank. He has driven large-scale search and batch pipelines at NCSOFT—optimizing Elasticsearch, processing ~2.6M records/day and sustaining 5k TPS—while modernizing legacy services to Kubernetes and implementing Airflow-based pipelines. Comfortable across backend, data ingestion, and infra (Kafka, MongoDB timeseries, Spring Batch/WebFlux, Kubernetes, Helm), he focuses on measurable performance and reliable deployment. Dongyoung champions Agile practices, code reviews and retrospectives to raise product and code quality, and proactively studies deep technical details to share with his team. His prior work includes consolidating dozens of servers into compact Kubernetes deployments and designing event stores for cloud gaming, showing an eye for both system-level efficiency and domain-specific needs. Based in South Korea, he balances practical engineering with continuous learning and knowledge-sharing.
9 years of coding experience
5 years of employment as a software developer
공학사, Computer Software Engineering, 공학사, Computer Software Engineering at 충북대학교
Github Skills (27)
d3js8
tcp8
udp7
ipc7
isomorphic7
mono7
svg7
react7
jpa6
client-server6
flux6
charts6
reactor5
react-query5
quic5
Programming languages (7)
Github contributions (5)
move02/bigdata-project
May 2019 - Sep 2020
빅데이터 프로젝트(이동영, 구본철, 장윤정)
Contributions:52 commits, 28 PRs, 43 pushes in 1 year 3 months
reactreact-queryjpa
move02/TIL
May 2019 - Jul 2020
Contributions:91 commits, 83 pushes, 1 branch in 1 year 2 months
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