Yunho Choi
머신 러닝 엔지니어 at Viva Republica (Toss)
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolYunho Choi is a Seoul-based machine learning engineer with 10 years of experience building production ML systems and backend services. He has applied research expertise in detection, generative models, table and text recognition, and face reconstruction from roles at TmaxSoft and WINSLAB, and moved those skills into production at Riiid where he built FastAPI-based AI servers, managed vector search on AWS OpenSearch, and automated model productization and deployment on Kubernetes and Databricks. At Toss he continues to bring ML-driven features to market, blending deep learning research with pragmatic engineering. He also has strong backend experience—shipping Django REST and Java Dropwizard services and optimizing server cost and performance—which helps him bridge research models and scalable production systems. Notably, he led efforts that doubled user retention via a content-based push project and set up model A/B testing and monitoring practices that institutionalized ML quality in product settings.
10 years of coding experience
4 years of employment as a software developer
Master's degree, Computer Engineering, 3.66/4.3 (92.88/100), Master's degree, Computer Engineering, 3.66/4.3 (92.88/100) at 한국과학기술원(KAIST)Bachelor's degree, Computer Engineering, 4.00/4.5, Bachelor's degree, Computer Engineering, 4.00/4.5 at 숭실대학교
English, Korean
Github Skills (42)
parsing9
validation8
messaging7
json-schema7
pythonic7
python7
parser7
pydantic5
data-parsing5
openai-clip5
tiles4
nlp4
hevc3
roberta3
streaming3
Programming languages (6)
Github contributions (5)
u9eunize/nonlinear3dmm-torch
Aug 2020 - Nov 2020
Contributions:53 commits in 2 months
choiking10/frontend-study
Jul 2020 - Jun 2021
Contributions:1 PR, 40 pushes, 3 branches in 11 months
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