Junseong Park
Machine Learning Engineer at 당근
Seoul, South Korea
Summary
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SeniorJunseong Park is a Machine Learning Engineer based in Seoul with 11 years of experience building production-scale ML and recommendation systems across major Korean tech companies. He has delivered GPU cloud infrastructure, ML training and serving pipelines, and vector similarity search engines for image and face recognition at Kakao and LINE before leading ML efforts at Karrot (당근). Comfortable across ML engineering and backend systems, he has hands-on experience with feature stores, deep-learning inference platforms, and cross-platform SDKs. An active open-source contributor, he improved error handling, typing, and tests in the popular pyupbit Upbit API Python wrapper, reflecting a pragmatic focus on robustness and API integration. Pragmatic and product-minded, he blends research-grade ML techniques with production reliability to drive real-world recommendations and search.
11 years of coding experience
5 years of employment as a software developer
Stackoverflow
11reputation
334reached
5answers
0questions
Github Skills (16)
error-handling10
api10
python10
apidoc10
python-requests10
http-request10
pytest9
testing9
type-checking9
typehinting9
neovim6
go6
beautifulsoup6
docker6
rethinkdb6
Programming languages (5)
Github contributions (5)
sharebook-kr/pyupbit
Feb 2022 - Feb 2022
python wrapper for upbit API
Role in this project:
Back-end Developer
Back-end DeveloperContributions:10 commits, 2 PRs, 1 comment in 2 days
Contributions summary:Junseong focused on improving the error handling and API request mechanisms of the `pyupbit` library. They refactored the error class structure, adding specific error types and improving error message clarity. Furthermore, they added type hints to the `request_api.py` file and implemented test cases for the error handling logic, enhancing code quality and robustness. These changes suggest a focus on API integration and error management within the context of an Upbit API wrapper.
apipythonapi-wrapperupbit-apipython-wrapper
ENOW-IJI/ENOW-server
Aug 2016 - Nov 2016
Contributions:197 commits, 190 pushes, 19 comments in 2 months
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