Shim Taewon
Software Engineer at DeNA
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolShim Taewon is a seasoned software engineer with 16 years of experience based in Tokyo, specializing in Ruby/Rails backend development, GraphQL adoption, query optimization, and building developer tooling and CI from scratch. He has repeatedly led migrations and greenfield projects—introducing testing culture, modern libraries, and Elixir/Phoenix admin systems—across consumer and game industry products. Currently at DeNA he focuses on developer experience and analytics-driven systems, drawing on prior roles where he managed versioning and search performance. An active open-source contributor, he has improved both front-end internationalization for the nodeschool site and modernized the ffaker library with language-aware fixes for Korean. Known for pragmatic leadership, he combines hands-on refactoring with a track record of turning legacy systems into maintainable, tested platforms.
16 years of coding experience
14 years of employment as a software developer
Computer Engineering Major, Computer Engineering Major at Kyunghee University
Korean, Japanese, English
Github Skills (14)
html10
testing10
unit-testing10
code-library10
refactoring10
web-development10
lib10
test-unit10
unit-test10
refactor10
ruby10
javascript9
css9
internationalization8
Programming languages (23)
Github contributions (5)
ffaker/ffaker
Jan 2015 - May 2022
Faker refactored.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 releases, 79 reviews, 152 commits in 7 years 6 months
Contributions summary:Shim's primary contribution involved refactoring code and improving the quality of the ffaker library. They replaced instances of `Array#rand` with `Array#sample` across multiple files, indicating a focus on code modernization and efficiency. Further improvements included bug fixes such as fixing an edge case and removing tests that randomly failed. The user also addressed issues with name generation and improved the support for Korean language features.
testingrefactoredfaker
nodeschool/nodeschool.github.io
Oct 2014 - Jan 2017
:school: nodeschool internet web page
Role in this project:Front-end Developer
Front-end DeveloperContributions:30 commits, 22 PRs, 13 pushes in 2 years 3 months
Contributions summary:Shim primarily contributed to the front-end aspects of the project. They updated website URLs and corrected typos within the `index.html` and `hexdex.html` files. The user also made adjustments to CSS styling and fixed i18n scripts, suggesting a focus on internationalization and website layout. Furthermore, they added new content, including a new hexagon, reflecting the website's structure.
nodeschoolexpressjsjavascriptexpressnodejs
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