Jesse Katsumata
サーバーエンジニア at 株式会社THEHUB
Chiba Prefecture, Japan
Summary
🤩
Rockstar🎓
Top SchoolJesse Katsumata is a bilingual server and React Native engineer with nine years of experience leading cross-functional teams to build healthcare and consumer mobile apps. Currently a tech lead-level engineer at AnotherBall and previously at CureApp, he has led small teams delivering React Native mobile apps, React web consoles, and Node.js APIs for regulated medical services. An active open-source maintainer in the React Native community, Jesse has improved core libraries (picker, clipboard, masked-view, tab-view) and contributed Android/iOS native components to the framework itself. He regularly modernizes projects—migrating codebases to TypeScript, adding Flow/TS typings, and enforcing linting/formatting—to boost maintainability and developer experience. Beyond code, he localizes developer docs (TypeScript site and other major projects) for Japanese audiences and organizes community meetups and hands-on workshops. On weekends he balances engineering rigor with creative energy as a multi-instrument musician.
9 years of coding experience
10 years of employment as a software developer
B.S., Computer Science, 3.41, B.S., Computer Science, 3.41 at University of California, Santa Barbara
Japanese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (50)
typesc10
ios10
javascript10
react-native10
mobile-development10
react-hooks10
typescript10
internationalization10
navigationbar10
cross-platform10
eslint10
type-definition10
android-development10
navigation-drawer10
pretier10
Programming languages (21)
Github contributions (5)
react-native-menu/menu
Nov 2020 - Dec 2022
UIMenu Component for React Native
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:37 releases, 272 reviews, 52 commits in 2 years 2 months
Contributions summary:Jesse primarily contributed to the iOS side of the `react-native-menu/menu` repository, developing a UI component for React Native. Their work focused on creating a `MenuView` using native iOS UI elements, implementing actions and menu titles, and integrating with React Native's bridge. They also added a fallback action sheet for older iOS versions and allowed adding a single action from JavaScript.
reactreact-nativeiosuiactionuimenu
react-native-clipboard/clipboard
Dec 2019 - Sep 2022
React Native Clipboard API for both iOS and Android.
Role in this project:Mobile Developer
Mobile DeveloperContributions:33 releases, 74 reviews, 118 commits in 2 years 9 months
Contributions summary:Jesse primarily contributed to updating and maintaining the example application within the React Native Clipboard repository. Their commits involved updating the example application to React Native 0.61.5 and 0.64, fixing Android package issues, and refactoring components. They also implemented the useClipboard hook and updated the example to TypeScript, demonstrating a focus on improving the example application's functionality and adapting to the latest React Native versions.
apireactclipboardreact-nativeandroid
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