Minjae Jeon
프론트엔드 엔지니어 at 번개장터 (Bungaejangter Inc.)
Seoul, South Korea
Summary
🤩
Rockstar🎓
Top SchoolMinjae Jeon is a frontend engineer based in Seoul with 5 years of hands-on experience building performant, user-focused web applications. Currently at Bungaejangter's Vertical Service Lab, he combines deep React expertise with strong TypeScript skills honed through contributions to prominent open-source libraries like react-hook-form and the high-performance toss/es-toolkit. He has practical experience designing component-driven UIs, state and data-fetching patterns using React Query, and improving type safety and utility APIs across projects. Known for enjoying deep focus in development, Minjae brings a pragmatic balance of craftsmanship and productivity, evidenced by contributions that improved both performance and developer ergonomics.
5 years of coding experience
정보통신공학, 정보통신공학 at 인덕대학교
Github Skills (21)
caching10
javascript10
lib10
react-hooks10
validations10
data-manipulation10
typescript10
validation10
forms10
typescript-types10
functional-programming10
typescripts10
react10
axios9
styled-components9
Programming languages (4)
Github contributions (5)
ssi02014/react-query-tutorial
Feb 2022 - Jan 2023
😃 TanStack Query(aka. react query) 에서 자주 사용되는 개념 정리
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 releases, 38 reviews, 83 commits in 11 months
Contributions summary:Minjae's contributions focused on building a React-based tutorial for TanStack Query (React Query). They set up the initial project structure and implemented routing with React Router. The user created and integrated UI components using styled-components and incorporated context API. They also integrated axios for API calls and demonstrated the use of useQuery, useMutation, and other React Query features.
queryreactcachingreactjstypescript
toss/es-toolkit
Jun 2024 - Mar 2025
A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:11 reviews, 31 PRs, 43 comments in 10 months
Contributions summary:Minjae contributed a series of features and improvements to the `es-toolkit` repository. Their work included adding array manipulation functions like `flatten`, `flattenDeep`, `flatMap`, `isSubset`, and `flatMapDeep`. They also refined existing functionalities such as `omitBy`, `pickBy`, `unionBy`, `cloneDeep`, and `toMerged`. Additionally, the user improved type definitions and documentation across several functions, demonstrating a strong focus on enhancing the library's usability and functionality.
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