Kyungyoon Kim
Machine Learning Engineer at Toss Bank(토스뱅크)
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolKyungyoon Kim is a Machine Learning Engineer with 11 years of hands-on experience building full-stack systems and production services, currently at Toss Bank in Seoul. He blends server-side engineering, ML product work, and UX-minded frontend improvements—evidenced by contributions to the open-source Logto IAM project where he implemented a Kakao connector and localized console UI. His background includes leading R&D teams, deploying on-prem Kubernetes, and developing payment/transportation card libraries and TCP/IP servers, showing comfort with low-level systems and infrastructure. With a Master’s focused on AI & Fintech and a BE in Computer Science, he approaches problems beyond code—designing practical, user-centric solutions that bridge backend, ML, and client interfaces.
11 years of coding experience
3 years of employment as a software developer
The University of UtahGradurate, Natural Science, Gradurate, Natural Science at Pungmu High SchoolMaster of Information Systems, AI & Fintech, Master of Information Systems, AI & Fintech at Yonsei University
Japanese, English, Korean
Stackoverflow
632reputation
119kreached
25answers
7questions
Github Skills (25)
authorizations10
typescript10
authentication10
user-authentication10
authorization10
typescript-types10
typescripts10
oauth10
react10
api-design9
apim9
api9
front-end-development8
back-end-development8
javascript7
Programming languages (10)
Github contributions (5)
logto-io/logto
Jul 2022 - Dec 2022
🧑🚀 An identity and access management (IAM) infrastructure with authentication, authorization, MFA, SSO, user management, and multi-tenancy features. Supports OAuth 2.0, OIDC, and SAML. No framework restrictions.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:11 reviews, 5 commits, 7 PRs in 4 months
Contributions summary:Kyungyoon's contributions focused on enhancing the Logto identity and access management platform, specifically adding features and improving the user interface. The user implemented a Kakao connector, including testing and bug fixes. In addition, they worked on the console frontend by implementing tab-based indentation and translating phrases into Korean. Their work demonstrates a proficiency in both frontend and backend development, incorporating UI/UX changes and API integrations.
social-loginsignidentitysign-in-upsign-in
pemassi/pemassi-kotlin-extensions
Sep 2021 - Oct 2022
Contributions:10 releases, 26 commits, 22 pushes in 1 year 1 month
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