Shinobu Hayashi
Platform Engineer
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolShinobu Hayashi is a Platform Engineer based in Tokyo with seven years of experience optimizing web development workflows and building developer-facing infrastructure. Trained in environmental engineering at the University of Tokyo, he applies academic rigor to practical problems—early research on VAR models for tunnel-boring machines gave him a taste for complex, data-driven systems. At Nikkei and Plaid he reduced frontend build times from minutes to seconds, refactored Fastly VCL for resilient CDN behavior, and centralized cross-service data logic to cut deployment costs. He is an active open-source contributor to high-profile projects like pnpm, Parcel, and SWC, often fixing deep parser/packager bugs and improving build tooling. Shinobu blends hands-on Node.js and frontend expertise with automation, testing, and migration work, and is known for translating team pain points into durable platform solutions.
7 years of coding experience
7 years of employment as a software developer
System Integration, Faculty of Engineering, System Integration, Faculty of Engineering at 東京大学
Stackoverflow
3reputation
165reached
1answer
1question
Github Skills (42)
dependency-manager10
parserator10
javascript10
parser10
npm10
swc10
css10
typescript10
package-manager-tool10
python-modules10
compiler-compiler10
typescript-types10
html10
compiler10
build-tools10
Programming languages (10)
Github contributions (5)
nanojsx/nano
Sep 2021 - Dec 2021
🎯 SSR first, lightweight 1kB JSX library.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 reviews, 14 commits, 7 PRs in 3 months
Contributions summary:Shinobu primarily focused on improving the type safety and functionality of the nanojsx library. They fixed type definitions for key components like `useState`, `<Link>`, and `<Img>`, ensuring more robust and reliable code. The user also implemented support for the new JSX Transform API, enhancing the library's compatibility and development experience. Furthermore, they improved the accessibility of the UI by addressing keyboard navigation and dialog usability.
reactdeno-modulejavascript1kbnano
parcel-bundler/parcel
Nov 2021 - May 2022
The zero configuration build tool for the web. 📦🚀
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:22 reviews, 17 commits, 22 PRs in 5 months
Contributions summary:Shinobu contributed to the Parcel bundler, focusing on bug fixes and feature enhancements across the codebase. They addressed issues related to error handling in CSS Modules, and TypeScript type definitions, and corrected a pre-existing React transpilation. Additionally, the user implemented new features like handling the href attribute in the HTML transformer and allowing environmental variables within binary expressions, improving the project's functionality and robustness. The user also made improvements related to parsing and configuration.
configurationzerocommonjscssjavascript
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