Yeoncheol Jang
Software Engineer at Toss Bank
Seoul, South Korea
Summary
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Rockstar🎓
Top SchoolYeoncheol Jang is a backend software engineer with six years of experience building cloud-native systems in Seoul, specializing in Java and Kotlin. He currently contributes to Toss Bank’s Server Platform team, modernizing legacy systems, maintaining internal frameworks, and operating secure file transfer and backup solutions between external partners and internal services. Previously at Gowid he delivered payment-focused products including a corporate card issuance workflow, real-time corporate risk assessment, and a loan repayment tracking system—demonstrating a strong focus on financial domain logic and real-time decisioning. Comfortable troubleshooting complex distributed systems, he brings a pragmatic blend of operational rigor and product-oriented engineering, informed by dual undergraduate studies in computer engineering and international business.
6 years of coding experience
1 year of employment as a software developer
Bachelor's degree, International Business/Trade/Commerce, Bachelor's degree, International Business/Trade/Commerce at Daegu University
Stackoverflow
115reputation
12kreached
1answer
5questions
Github Skills (87)
vector-search10
transaction10
data-consistency10
realtime10
saga-pattern10
message-queue10
saga10
streaming10
gts10
nosql10
xa10
high-performance10
database10
json10
key-value-store10
Programming languages (7)
Github contributions (5)
yeoncheol-jang/kafka
Jan 2022 - Mar 2026
Mirror of Apache Kafka
Contributions:12 pushes, 15 branches in 4 years 2 months
kafka-streamsapache-kafkasinkkafka-consumerapache
YeonCheolGit/mybatis-wine-price
Dec 2020 - Apr 2021
Contributions:127 commits, 110 pushes, 1 branch in 3 months
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