mono — Masayuki Ono
Tokyo, Japan
Summary
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RockstarMono Masayuki Ono is a versatile software engineer with 12 years of experience specializing in Flutter/Dart, Firebase/GCP, iOS/Swift and TypeScript, combining hands-on mobile development with backend integration. He co-founded and led engineering at startups before moving into freelance and advisory roles, currently advising NTT DOCOMO and Sola while maintaining active freelance work. A pragmatic problem-solver, he contributes to high-profile open-source projects such as FlutterFire and Riverpod—fixing platform-specific iOS bugs and improving example UIs and docs—demonstrating attention to both developer experience and production reliability. His tooling work includes creating LicensePlist, an iOS dependency license generator that integrates GitHub, CocoaPods, Carthage and SwiftPM, showing a knack for cross-toolchain automation. Trained at the University of Tokyo (MSc in Intelligent Mechanical Information), he blends academic rigor with product-minded engineering and a pattern of improving developer workflows behind the scenes.
13 years of coding experience
Stackoverflow
4,341reputation
153kreached
11answers
6questions
Github Skills (32)
ios10
mobile-development10
flutter-apps10
ui-design10
firebase-storage10
state-management10
riverpod10
swift10
flutter-game10
dart10
firebase10
flutter10
animation9
apidoc9
google-cloud-firestore9
Programming languages (17)
Github contributions (5)
mono0926/LicensePlist
Apr 2017 - Dec 2022
A license list generator of all your dependencies for iOS applications
Role in this project:
Backend Developer
Backend DeveloperContributions:144 releases, 9 reviews, 479 commits in 5 years 9 months
Contributions summary:Mono primarily contributed to the core functionality of the iOS license list generator. Their work involved implementing API interactions with GitHub, parsing dependency information, and integrating with Swift Package Manager. The user also added features to parse and collect license information from various sources, including CocoaPods and Carthage. Furthermore, the user made architectural improvements, refactoring and adding functionality such as the exclusion and renaming of libraries from configuration files.
ios-applicationlicenselicense-managementlicensesios
rrousselGit/riverpod
Jul 2020 - Aug 2022
A reactive caching and data-binding framework. Riverpod makes working with asynchronous code a breeze.
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 review, 9 commits, 10 PRs in 2 years 1 month
Contributions summary:Mono primarily focused on improving the example applications within the repository. They fixed UI issues in the Marvel example, including fixing the circular progress indicator and enabling back navigation. The user also enhanced the UI by adding features such as displaying character names in the AppBar. Moreover, the user refactored code and corrected typos in the documentation.
asynchronouscachingdatabindingriverpodprovider
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