Daijiro Wachi
Sr. Solution Architect at Freelance (Self employed)
Tokyo, Japan
Summary
🤩
RockstarDaijiro Wachi is a senior solution architect with 14 years of engineering experience, currently working at AWS in Tokyo and freelancing on developer tools and OSS. A long-time Node.js core collaborator, he brings deep expertise in JavaScript runtimes and CLI tooling, having contributed to nodejs/node, npm/cli, and the AWS Amplify CLI. His work spans backend reliability and front-end usability—examples include improving npm's command behavior, hardening Node.js URL/ICU tests, and polishing MetaMask UI components. He focuses on practical developer experience, from test coverage and CI fixes to tooling that helps users onboard (e.g., generating READMEs for Amplify projects). Known for attention to edge cases and error handling, he blends product-minded engineering with hands-on contributions to widely used projects. Based in Tokyo, he combines enterprise cloud architecture knowledge with a grassroots open-source mindset.
13 years of coding experience
Japanese, English, Dutch, Chinese, vlaams
Stackoverflow
176reputation
21kreached
5answers
0questions
Github Skills (54)
tooling10
javascript10
npm10
npm-cli10
package-development10
plugin-development10
testing10
command-line-interface10
typescript10
extension-functions10
acceptance-testing10
url-parsing10
package-manager-tool10
querystring10
extension-methods10
Programming languages (21)
Github contributions (5)
workshopper/how-to-npm
Nov 2016 - Jul 2017
A module to teach you how to module.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:90 commits, 49 PRs, 38 pushes in 8 months
Contributions summary:Daijiro primarily contributed to the development of a "how-to-npm" workshopper module. Their work involved modifying existing JavaScript files to separate text and code, implementing and verifying exercise solutions within the module. The user also fixed lint errors, added new languages, and updated dependencies, demonstrating a focus on the project's functionality and user experience.
nodeschoolnpm-packagejavascriptphpteach
npm/npm
Jan 2015 - Jun 2018
This repository is moving to: https://github.com/npm/cli
Role in this project:Back-end Developer
Back-end DeveloperContributions:75 commits, 83 PRs, 285 comments in 3 years 5 months
Contributions summary:Daijiro primarily contributed to the core functionality of the npm CLI. Their work included adding support for the `--long` option in the `outdated` command, modifying the behavior of the `run-script` command, allowing filtering in the `ls` command via `--dev` and `--prod`, fixing the view versions command, and refining the error-handling for unpublish. Furthermore, the user refactored command list into a separate file, and implemented help message improvements.
npm-clinodejsnpmcli
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.