Winterย Jung
Software Engineer at Karrot
Seoul, South Korea
Summary
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Senior๐
Top SchoolWinter Jung is a backend-focused software engineer based in Seoul with 10 years of experience building high-throughput, cost-efficient systems and developer tooling. At BankSalad he led large-scale migrations, decomposed monoliths into microservices, and created company-wide Go libraries, gRPC/IDL generators and DDL tooling used across 50+ repos while reviewing 10K+ PRs. He cut costs dramatically by migrating a 70TiB MySQL table to Athena, shut down legacy services and improved deployment velocity via a ChatOps CI/CD that increased weekly production deployments fourfold. Now at Karrot, he applies that operational and systems-first mindset to consumer-scale backend challenges (Karrot serves ~40M MAU). An active open-source contributor, heโs improved terminal and notebook UX for the popular halo spinner and prototypes integrations for Jupyter, reflecting a taste for practical developer ergonomics.
11 years of coding experience
6 years of employment as a software developer
Bachelor's degree Urban engineering, Bachelor's degree Urban engineering at Hongik University
Github Skills (6)
halo10
ipython10
python10
jupyter10
testing10
async4
Programming languages (15)
Github contributions (5)
manrajgrover/halo
Dec 2017 - Jan 2018
๐ซ Beautiful spinners for terminal, IPython and Jupyter
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:13 commits, 3 PRs, 29 comments in 18 days
Contributions summary:Winter contributed to improving the `halo` project, a terminal spinner library. Their work included fixing Python 2 compatibility issues by updating code to support Python 3, improving keyboard interrupt handling, and adding test cases. Furthermore, the user implemented a prototype for a `HaloNotebook` class to adapt the spinner for use within Jupyter notebooks. They also added an example notebook to demonstrate the use of the `HaloNotebook`.
ipythonjupyterhalospinnerpython
JungWinter/HongikFood
Aug 2016 - Apr 2018
Contributions:27 PRs, 105 pushes, 11 branches in 1 year 7 months
apipython-flask-apipythonflask-serverflask
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